CN106019229B - Airdrome scene target acoustical localization method, sound sensing device and system - Google Patents

Abstract

The present invention provides an airport scene target acoustic positioning method, an acoustic sensing device and a system. The airport scene target acoustic positioning method adopts different ways to lay out acoustic sensor node array element arrays in different areas of the airport scene, and picks up the acoustic sensor node array. Target sound waves in the area where the element array is deployed, and based on the sound wave information, the target on the scene is located. The acoustic sensor node array element array can form a fixed spatial beam with spatial selectivity, and can obtain acoustic wave information with an ideal signal-to-interference-to-noise ratio. The airport scene target acoustic positioning method, acoustic sensing device and system provided by the present invention can pick up acoustic wave information to the greatest extent, effectively suppress noise, and rationally utilize acoustic sensors.

Description

Acoustic positioning method, acoustic sensing device and system for airport surface target

technical field

The invention relates to the technical field of acoustic positioning, in particular to an acoustic positioning method for an airport scene target, an acoustic sensing device and a system.

Background technique

At present, the electromagnetic wave environment of the airport scene is complex, and the positioning monitoring technology using electromagnetic waves as the medium is susceptible to interference, resulting in reduced positioning performance or even failure. In addition, the technology of electromagnetic energy radiation and detection is usually complicated and the cost is high. Acoustic positioning technology is applied to target positioning on the airport scene, and has some unique advantages, such as: positioning signals are easy to obtain, and will not radiate energy to the surrounding environment; it is not affected by the electromagnetic environment of the airport; the equipment is small in size, low in cost, and convenient for remote deployment. Acoustic positioning has attracted much attention from researchers.

However, the sound field of an airport scene is complex and variable, and there will be a variety of sound signals, such as: irrelevant signals from different sound sources, reflections of sound waves by various obstacles such as the ground and buildings, low-altitude aircraft noise, far-field Sound source target interference, etc. In the complex environment of the airport with a lot of noise and interference, it is difficult to obtain an ideal signal-to-interference-noise ratio, and it is difficult to achieve the goal of high-precision positioning stipulated by the International Civil Aviation Organization. The International Civil Aviation Organization stipulates the accuracy requirements for the positioning accuracy of the airport surface target below 7.5m. In order to effectively locate the sound source target, it is necessary for the sound source receiving device (for example, a microphone) to provide sufficient sound information. If the number of sound source receiving devices is large, it can provide sufficient sound information to a certain extent, but the complexity of subsequent array signal processing increases, and the accuracy of target positioning decreases, and most sound source receiving devices cannot provide sound information for subsequent sound sources. Target positioning provides information support, or the sound source receiving device cannot be fully applied, and the utilization rate of the equipment is low. If the number of sound source receiving devices is reduced, and the layout structure is unreasonable, or the signal received by the sound source receiving device has more noise or interference and less effective signals, then the sound source receiving device cannot locate the subsequent sound source target Providing information support will also reduce the accuracy of target positioning and affect the positioning of aircraft.

In order to pick up the sound wave information to the maximum and effectively suppress the noise, how to rationally utilize the sound source receiving device is an urgent problem to be solved by those skilled in the art.

Contents of the invention

The present invention aims to provide an acoustic positioning method, acoustic sensing device and system for an airport scene target, which can pick up acoustic wave information to the greatest extent, effectively suppress noise, and rationally utilize acoustic sensors.

In a first aspect, the present invention provides a method for acoustic positioning of an airport scene target, which is specifically described as follows:

The present invention provides a method for acoustic positioning of an airport scene target, the specific steps are as follows:

Step S1, according to different areas of the airport scene, lay out the array of acoustic sensor nodes, and pick up the target sound waves in the area where the array of acoustic sensor nodes is arranged;

Step S2, based on the acoustic wave information acquired by the acoustic sensor node array, locate the target on the scene.

Further, in step S1, the acoustic sensor node array of the straight-line airport runway is laid out in the following way: the acoustic sensor node array is symmetrically and evenly arranged on both sides of the straight-line airport runway to form a linear acoustic sensor node array, and the acoustic sensor node array is The sensor node array forms a first fixed space beam, and the first fixed space beam has a first overlooking sector angle and a first elevation angle, so that the first fixed space beam picks up target sound waves on a straight-line airport runway.

Further, in step S1, the acoustic sensor node element array of the airport connecting curve is arranged in the following way: the acoustic sensor node array is arranged on both sides of the airport connecting curve, and the number of arrays arranged on the side where the center of the connecting curve is located The number of layouts is less than that on the opposite side to form a curved acoustic sensor node array, the acoustic sensor node array forms a second fixed space beam, and the second fixed space beam has a second overlooking sector angle and a second pitch angle, so that Make the second fixed space beam pick up the target sound wave connecting the curve.

Further, the second fixed spatial beam includes a second inner fixed spatial beam and a second outer fixed spatial beam, and the second outer overlooking sector angle of the second outer fixed spatial beam is smaller than the second inner overlooking sector angle of the second inner fixed spatial beam , the second inner fixed spatial beam is formed by the acoustic sensor element array located on the side where the center of the connecting curve is located, and the second outer fixed spatial beam is formed by the acoustic sensor array located on the opposite side of the connecting curve center.

Further, in step S1, the acoustic sensor node array of the airport right-angle turn is arranged in the following way: the acoustic sensor node array is arranged on both sides of the airport right-angle turn, and the number of arrays on the side where the center of the circle of the right-angle turn is located The number of layouts is less than that on the opposite side to form a right-angle acoustic sensor node array, the acoustic sensor node array forms a third fixed space beam, and the third fixed space beam has a third overlooking sector angle and a third elevation angle, so that Make the third fixed spatial beam pick up the target sound wave of the right-angled curve.

Further, the third outer overlooking sector angle of the third outer fixed space beam is smaller than the third inner overlooking sector angle of the third inner fixed space beam, and the third fixed space beam includes the third inner fixed space beam and the third outer fixed space beam , the third inner fixed spatial beam is formed by the acoustic sensor array on the side where the center of the right-angle turn is located, and the third outer fixed spatial beam is formed by the acoustic sensor array on the opposite side to the center of the right-angle turn.

Based on the embodiment of the acoustic positioning method for any airport scene target above, further, the first top view fan angle is smaller than the second top view fan angle, and the second top view fan angle is smaller than the third top view fan angle.

The present invention provides an airport scene target acoustic positioning method. The method adopts different ways to lay out acoustic sensor node arrays in different areas of the airport scene. The acoustic sensor node arrays form fixed spatial beams with spatial selectivity, which can Pick up the target sound waves in the deployed area to the greatest extent, suppress the ground acoustic clutter, far-field clutter and noise as much as possible, reduce the number of interfering sound sources, and help to obtain an ideal signal-to-interference-noise ratio. target positioning. The airport surface target acoustic positioning method can pick up the acoustic wave information to the greatest extent, effectively suppress the noise, and reasonably use the acoustic sensor to quickly and effectively locate the surface target.

In a second aspect, the present invention provides an airport scene target acoustic sensing device, which is specifically described as follows:

The invention provides an airport scene target acoustic sensing device, which comprises a linear acoustic sensor node array, a curved acoustic sensor node array and a right-angle acoustic sensor node array. The linear acoustic sensor node array includes acoustic sensor node arrays symmetrically and uniformly arranged on both sides of the straight-line airport runway, and the acoustic sensor node array forms a first fixed spatial beam with a first overlooking sector angle and a first pitch angle , so that the first fixed space beam picks up the target sound wave of the straight airport runway. The curved acoustic sensor node array includes acoustic sensor node arrays arranged on both sides of the connecting curve of the airport. A second fixed spatial beam with a second overlooking fan angle and a second elevation angle is formed, so that the second fixed spatial beam picks up the target sound wave connecting the curve. The right-angle acoustic sensor node array includes acoustic sensor node arrays arranged on both sides of the airport right-angle turn. A third fixed spatial beam with a third top-view fan angle and a third elevation angle is formed, so that the third fixed spatial beam picks up target sound waves on the right-angled curve.

The present invention provides an acoustic sensing device for an airport scene target. The acoustic sensing device includes a linear acoustic sensor node array, a curved acoustic sensor node array and a right-angle acoustic sensor node array. According to the different areas of the airport scene, the acoustic sensor node array is arranged. The linear acoustic sensor node array is located on both sides of the straight airport runway, the curved acoustic sensor node array is located on both sides of the airport contact curve, and the right-angle acoustic sensor node array is located on both sides of the airport right-angle turn. Acoustic sensing devices deployed in different areas can form fixed spatial beams with different overlooking fan angles, covering straight airport runways, airport contact curves and airport right-angle turns, so as to pick up target sound waves in three airport areas. At the same time, the fixed space beam has a pitch angle, so that the intersection area of the fixed space beam falls as much as possible in the concentrated area of the target sound wave, so as to form a fixed space beam with spatial selectivity, which can pick up the target sound wave to the maximum extent and suppress ground noise Waves, far-field clutter and noise, to obtain an ideal signal-to-interference-noise ratio, and rationally use acoustic sensors.

In a third aspect, the present invention provides a target acoustic positioning system for an airport scene, which is specifically described as follows:

The present invention provides a kind of target acoustic positioning system of airport scene, and this positioning system comprises airport scene target acoustic sensor device, and processor, and processor is used for receiving the sound wave information that airport scene target acoustic sensor device receives, and according to the sound wave information, Position the target on the scene.

The target acoustic positioning system of the airport scene provided by the present invention, the positioning system forms a fixed space beam with spatial selectivity through the target acoustic sensing device of the airport scene to collect target sound waves in different areas of the airport scene, and can suppress interference and noise, Then the sound wave information is processed by the processor, because the obtained sound wave information has an ideal signal-to-interference-noise ratio, which is beneficial to the positioning of the scene target.

Therefore, the airport scene target acoustic positioning method, acoustic sensing device and system provided by the present invention can pick up sound source target signals to the greatest extent, effectively suppress noise, and rationally utilize acoustic sensors.

Description of drawings

Fig. 1 is a flow chart of a method provided by the airport scene target acoustic positioning method of the present invention;

Fig. 2 is a method flow chart based on the acoustic positioning method of the straight-line airport runway target provided by the acoustic positioning method of the airport scene target of the present invention;

Fig. 3 is a flow chart of an acoustic positioning method based on a connecting curve target provided by the airport scene target acoustic positioning method of the present invention;

Fig. 4 is a flow chart of a method for acoustic location based on an airport right-angle turn target provided by the method for acoustic location of an airport scene target in the present invention;

Fig. 5 is a top view provided by the airport scene target acoustic sensing device of the present invention;

Fig. 6 is a schematic diagram of a linear acoustic sensor node array element array provided by the airport scene target acoustic sensing device of the present invention;

Fig. 7 is a schematic diagram of a curved acoustic sensor node array element array provided by the airport scene target acoustic sensing device of the present invention;

Fig. 8 is a schematic diagram of a right-angle acoustic sensor node array element array provided by the airport scene target acoustic sensing device of the present invention;

Fig. 9 is a cross-sectional view provided by the airport scene target acoustic sensing device of the present invention.

Detailed ways

The present invention will be further illustrated by specific examples below, but it should be understood that these examples are only used for more detailed description, and should not be construed as limiting the present invention in any form.

In the first aspect, the present embodiment provides a method for acoustic positioning of an airport scene target, which is specifically described as follows:

This embodiment provides an airport scene target acoustic positioning method, in conjunction with Figure 1, the specific steps are as follows:

Step S1, according to different areas of the airport scene, lay out the array of acoustic sensor nodes, and pick up the target sound waves in the area where the array of acoustic sensor nodes is arranged;

Step S2, based on the acoustic wave information acquired by the acoustic sensor node array, locate the target on the scene.

The airport scene target acoustic positioning method provided by this embodiment, the method is by laying out different acoustic sensor node arrays in different areas of the airport scene, and the acoustic sensor node arrays form fixed spatial beams with spatial selectivity, which can Pick up the target sound waves in the deployed area to the greatest extent, suppress the ground acoustic clutter, far-field clutter and noise as much as possible, reduce the number of interfering sound sources, and help to obtain an ideal signal-to-interference-noise ratio. target positioning. The airport surface target acoustic positioning method can pick up the acoustic wave information to the greatest extent, effectively suppress the noise, and reasonably use the acoustic sensor to quickly and effectively locate the surface target.

Preferably, based on the straight-line airport runway of the airport scene, the acoustic positioning method of the airport scene target in this embodiment, in conjunction with Figure 2, the specific steps are as follows:

Step S21, the acoustic sensor node array of the straight-line airport runway is laid out in the following way: the acoustic sensor node array is arranged on both sides of the straight-line airport runway to form a linear acoustic sensor node array, and the acoustic sensor node array forms the second A fixed space beam, the first fixed space beam has a first overlooking sector angle and a first pitch angle, so that the first fixed space beam picks up the target sound wave of the straight-line airport runway; wherein, in order to effectively extract the target sound wave of the straight-line airport runway , and suppress noise or interference from other directions, the first viewing angle of the sector does not exceed 180 degrees, and the multiple first fixed space beams can cover the runway surface of the straight-line airport runway. At the same time, since the engine of the aircraft is at a certain height from the ground, in order to suppress ground reflection and high-altitude noise or interference, the included angle range between the first pitch angle and the ground is about 5°-20°.

Step S22, based on the acoustic wave information acquired by the linear acoustic sensor node array, locate the target on the scene.

Based on the characteristics of the straight-line airport runway in the airport scene, the acoustic sensor node arrays are symmetrically distributed on both sides of the straight-line airport runway, forming a first fixed spatial waveform with a first overlooking sector angle and a first pitch angle. The first fixed spatial beam has a first overlooking sector angle, can adapt to the straight line characteristic of the straight airport runway, and covers the straight airport runway. The first fixed space beam also has an elevation angle, so as to pick up target sound waves at a certain height above the straight airport runway as much as possible, and suppress ground acoustic clutter at low elevation angles, noise from far-end waves, and low-altitude aircraft. From the perspective of spatial filtering, the first fixed spatial beam can maximize the pickup of target acoustic wave information, suppress noise or/and interference, and obtain an ideal signal-to-interference-noise ratio.

Preferably, based on the airport contact curve of the airport scene, the acoustic positioning method of the airport scene target in this embodiment, in combination with Figure 3, the specific steps are as follows:

Step S31, the acoustic sensor node array of the airport connecting curve is laid out in the following way: the acoustic sensor node array is arranged on both sides of the airport connecting curve, and the number of arrays on the side where the center of the connecting curve is located is less than that on the opposite side The number of layouts constitutes a curved acoustic sensor node array, and the acoustic sensor node array forms a second fixed spatial beam with a second top view fan angle and a second elevation angle, so that the second fixed spatial beam picks up the connecting curve The target sound wave; since the engine of the aircraft is at a certain height from the ground, in order to suppress ground reflection and high-altitude noise or interference, the angle range between the second pitch angle and the ground is about 5° to 20°.

Step S32, based on the acoustic wave information acquired by the curved acoustic sensor node array, locate the target on the scene.

Based on the bending characteristics of the airport connecting curve in the airport scene, the acoustic sensor node arrays are arranged on both sides of the airport connecting curve, and the number of layouts on both sides is different, taking into account the multiple channels at the connection to form a second overlooking fan angle and a second fixed spatial beam at a second elevation angle. The second fixed space beam has space selectivity, which can pick up the sound waves of the target above the contact curve as much as possible, and suppress the ground sound clutter at low elevation angles and the noise of low-altitude aircraft.

Preferably, the second fixed spatial beam includes a second inner fixed spatial beam and a second outer fixed spatial beam, and the second outer bird's eye view sector angle of the second outer fixed space beam is smaller than the second inner bird's eye fan angle of the second inner fixed space beam , the second inner fixed spatial beam is formed by the acoustic sensor element array located on the side where the center of the connecting curve is located, and the second outer fixed spatial beam is formed by the acoustic sensor array located on the opposite side of the connecting curve center. Among them, in order to effectively extract the target sound waves of the airport contact curve and suppress noise or interference from other directions, the second outer looking fan angle is less than 180 degrees, the second inner looking fan angle is greater than 180 degrees, and multiple second fixed The space beam can cover the road surface of the airport contact curve, or the runway, taxiway, etc. connected with the contact curve, which is beneficial to more comprehensively picking up the target sound wave and suppressing noise or/and interference.

Preferably, based on the airport right-angle turn road of the airport scene, the acoustic positioning method of the airport scene target in this embodiment, in conjunction with Figure 4, the specific steps are as follows:

Step S41, the acoustic sensor node array of the airport right-angle turn is laid out in the following way: the acoustic sensor node array is arranged on both sides of the airport right-angle turn, and the number of arrays on the side where the center of the right-angle turn is located is less than that on the opposite side The number of layouts constitutes a right-angle acoustic sensor node array. The acoustic sensor node array forms a third fixed space beam. The third fixed space beam has a third overlooking sector angle and a third elevation angle. The third fixed space beam is used for It is used to pick up the target sound wave on the right-angle turn road; since the engine of the aircraft is at a certain height from the ground, in order to suppress ground reflection and high-altitude noise or interference, the angle range between the third pitch angle and the ground is about 5°-20°.

Step S42, based on the sound wave information acquired by the rectangular acoustic sensor node array element array, the scene target is located.

Based on the right-angle characteristics of airport right-angle turns based on the airport scene, such as right-angle and T-shaped turns, the acoustic sensor node arrays are arranged on both sides of the airport right-angle turn, and the number of deployments on both sides is different. The third fixed space beam with three overlooking sector angles and the third elevation angle ensures that the third fixed space beam can cover the right-angled turn of the airport, and the intersection area of the third fixed space beam is as consistent as possible with the concentration area of the target sound wave, so that The third fixed space beam has space selectivity, and picks up the target sound wave as much as possible to suppress noise or/and interference.

Preferably, the third outer overlooking sector angle of the third outer fixed space beam is smaller than the third inner overlooking sector angle of the third inner fixed space beam, and the third fixed space beam includes the third inner fixed space beam and the third outer fixed space beam , the third inner fixed spatial beam is formed by the acoustic sensor array on the side where the center of the right-angle turn is located, and the third outer fixed spatial beam is formed by the acoustic sensor array on the opposite side to the center of the right-angle turn. Among them, in order to effectively extract the target information of the right-angle turn at the airport and suppress noise or interference from other directions, the third outer looking fan angle is less than 180 degrees, the third inner looking fan angle is greater than 180 degrees, and multiple third fixed The space beam can cover the road surface of the right-angle turn of the airport to take into account the multiple channels at the connection, or the runway, taxiway, etc. connected to the airport right-angle turn, which is conducive to more comprehensive pickup of target sound waves.

Based on any embodiment of the above-mentioned acoustic positioning method for an airport scene target, preferably, the first bird's-eye view fan angle is smaller than the second bird's-eye view fan angle, and the second bird's-eye view fan angle is smaller than the third bird's-eye view fan angle. Straight-line airport runways, connecting curves and airport right-angle turns based on the airport scene have right-angle characteristics, bending characteristics and right-angle characteristics respectively. The fixed space beam with increasing angle of looking down on the sector can pick up effective target sound waves to the maximum extent.

In the second aspect, this embodiment also provides an airport scene target acoustic sensing device, which is specifically described as follows:

This embodiment provides an acoustic sensor device for an airport scene target. Referring to FIG. 5 , the positioning device includes a linear acoustic sensor node array, a curved acoustic sensor node array, and a right-angle acoustic sensor node array.

The linear acoustic sensor node array includes acoustic sensor node arrays symmetrically and uniformly arranged on both sides of the straight-line airport runway, and the acoustic sensor node array forms a first fixed spatial beam with a first overlooking sector angle and a first pitch angle , the first fixed spatial beam is used to pick up target sound waves on straight airport runways. Combined with Figure 6, on both sides of the straight-line airport runway, there are symmetrically distributed linear acoustic sensor node arrays, such as the first NEA acoustic sensor array 61, the second NEA acoustic sensor array 62, and the third NEA acoustic sensor array The distribution characteristics of the element array 63 and the fourth NEA acoustic sensor array element array 64, which respectively form the first node fixed space beam 611, the second node fixed space beam 621, the third node fixed space beam 631 and the fourth node fixed space beam 641. From a bird's eye view angle, each fixed space beam has the same first bird's-eye view sector angle, the angle of which does not exceed 180°, and can cover the straight airport runway, so as to pick up the sound wave signal of the target aircraft 60 above the straight runway to the maximum. At the same time, each fixed space beam has the same first elevation angle, and the angle range is 5°-20°.

The curved acoustic sensor node array includes acoustic sensor node arrays arranged on both sides of the connecting curve of the airport. A second fixed spatial beam is formed with a second overlooking fan angle and a second elevation angle, and the second fixed spatial beam is used to pick up the target sound wave connecting the curve. In combination with Fig. 7, on both sides of the connecting curve, the acoustic sensor node arrays are arranged, such as the first NEA acoustic sensor array 71, the second NEA acoustic sensor array 72, and the third NEA acoustic sensor array 73 , the fourth NEA acoustic sensor array 74 and the fifth NEA acoustic sensor array 75 respectively form the first node fixed space beam 711, the second node fixed space beam 721, the third node fixed space beam 731, the fourth node The fixed spatial beam 741 and the fifth node fixed spatial beam 751 . For example, the first NEA acoustic sensor array 71 and the fourth NEA acoustic sensor array 74 are respectively located at the side of the center of the connecting curve, such as the second NEA acoustic sensor array 72, the third NEA acoustic sensor array 77 And the fifth NEA acoustic sensor element array 75 is located on the opposite side of the side where the center of circle of the contact curve is located, and the second overlooking sector angle of its fixed spatial beam is greater than the first overlooking sector angle of the fixed spatial waveform of the straight airport runway, and the second The outer overlooking sector angle is less than 180 degrees, the second inner overlooking sector angle is greater than 180 degrees, and multiple fixed space beams can cover the road surface of the airport contact curve. At the same time, each fixed space beam has the same second elevation angle, and the angle range is 5°-20°.

The right-angle acoustic sensor node array includes acoustic sensor node arrays arranged on both sides of the airport right-angle turn. A third fixed spatial beam with a third top view fan angle and a third pitch angle is formed, and the third fixed spatial beam is used to pick up target sound waves on right-angled curves. Combined with Figure 8, on both sides of the right-angle turn road at the airport, the acoustic sensor node arrays are arranged, such as the first NEA acoustic sensor array 81, the second NEA acoustic sensor array 82, and the third NEA acoustic sensor array 83. The fourth NEA acoustic sensor array 84, the fifth NEA acoustic sensor array 85, and the sixth NEA acoustic sensor array 86, which form the first node fixed spatial beam 811, the second node fixed spatial beam 821, The fixed space beam 831 of the third node, the fixed space beam 841 of the fourth node, the fixed space beam 851 of the fifth node and the fixed space beam 861 of the sixth node, the top view sector angles of which are larger than the top view sector of the second fixed space beam connecting the curve angle, and the third outer overlooking sector angle is less than 180 degrees, and the third inner overlooking sector angle is greater than 180 degrees, which can pick up the sound wave signal above the right-angle turn road at the airport and suppress interference and noise. At the same time, each fixed space beam has the same second elevation angle, and the angle range is 5°-20°. In conjunction with Fig. 9, the fixed spatial beam formed by the airport surface target acoustic sensing device has a pitch angle, such as on both sides of a straight airport runway, a connecting curve or an airport right-angle turn, a first acoustic sensor element array 91 and The second acoustic sensor element array 92, which respectively forms a first node fixed space beam 911 and a second node fixed space beam 922 with an elevation angle, the intersection area of the two beams falls on the concentrated area of the target sound wave as much as possible, and can maximize Pick up target sound waves, suppress ground clutter, far-end or low-altitude noise.

The acoustic sensor device for an airport scene target in this embodiment includes a linear acoustic sensor node array, a curved acoustic sensor node array, and a right-angle acoustic sensor node array. According to different areas of the airport scene, different acoustic sensing devices are deployed. The linear acoustic sensor node arrays are located on both sides of the straight airport runway to adapt to the straight line characteristics of the straight airport runway. The node array of the curved acoustic sensor is located on both sides of the airport contact curve to adapt to the bending characteristics of the airport contact curve. The right-angle acoustic sensor node array is located on both sides of the airport right-angle turn to adapt to the right-angle characteristics of the airport right-angle turn. Acoustic sensing devices deployed in different areas can form fixed spatial beams with sequentially increasing fan angles, covering straight airport runways, airport contact curves, and airport right-angle turns, so as to pick up target sound waves above the three airport areas. At the same time, there are ground clutter areas, acoustic signal areas, and low-altitude noise areas from bottom to top above the airport scene, such as low-altitude aircraft noise. The fixed space beam has an elevation angle to make it spatially selective, that is, the intersection area of the fixed space beam falls on the concentration area of the target sound wave as much as possible, such a fixed space beam can divide the space into multiple different areas, such as the ground Clutter suppression area, acoustic signal concentration area and low-altitude noise suppression area, the airport surface target acoustic sensing device can pick up target sound waves in the acoustic signal enhancement area to the maximum, suppress ground acoustic clutter, far-end ground noise and low-altitude noise, To obtain the ideal signal to interference and noise ratio, make reasonable use of the acoustic sensor.

In the third aspect, this embodiment also provides an acoustic target positioning system for an airport scene, which is specifically described as follows:

This embodiment provides a target acoustic positioning system for an airport scene. The positioning system includes an airport target acoustic sensing device, and a processor. The processor is used to receive the acoustic wave information received by the airport target acoustic sensing device, and , to locate the scene target.

The target acoustic positioning system of the airport scene provided by this embodiment, the positioning system forms a fixed space beam with spatial selectivity through the target acoustic sensing device of the airport scene, and the fixed space beam has a certain overlooking sector angle and pitch angle, so that the airport The surface target acoustic sensing device can maximize the acquisition of target acoustic wave information, suppress ground clutter, far-end noise and low-altitude noise, and obtain an ideal signal-to-interference-noise ratio. The processor locates the surface target according to the acoustic wave information received by the airport surface target acoustic sensing device. Since the airport surface target acoustic sensing device can obtain the sound wave information with an ideal signal-to-interference-noise ratio, it can reduce the complexity of positioning calculations and is beneficial to The scene target is positioned.

While the invention has been described to a certain extent, it will be obvious that various changes may be made in various conditions without departing from the spirit and scope of the invention. It is to be understood that the invention is not limited to the embodiments, but belongs to the scope of the claims, which include equivalents of each element.

Claims (6)

1. a kind of airdrome scene target acoustical localization method, it is characterised in that comprise the following steps：

Step S1, according to the straight line airfield runway of airdrome scene, sonic transducer node array element battle array is laid in the straight line airport and run Road both sides, form linear sonic transducer node array element array, and the sonic transducer node array element formation is into the first fixed space Wave beam, the first fixed space wave beam has first to overlook sector angle and first angle of pitch, so that first fixed space Wave beam picks up the target sound waves of the straight line airfield runway；

Bend is got in touch with according to the airport of airdrome scene, sonic transducer node array element battle array is laid in the airport contact bend both sides, And the laying number that number is less than offside is laid in side where the center of circle of the contact bend, forms bending-type sonic transducer node battle array Element array, for the sonic transducer node array element formation into the second fixed space wave beam, the second fixed space wave beam has the Two overlook sector angle and second angle of pitch, so that the target sound waves of the second fixed space wave beam pickup contact bend；

According to the airport right-angled bend road of airdrome scene, sonic transducer node array element battle array is laid in the airport right-angled bend road two Side, and the laying number that number is less than offside, form right angle formula sonic transducer are laid in side where the center of circle in the right-angled bend road Node array element array, the sonic transducer node array element formation is into the 3rd fixed space wave beam, the 3rd fixed space wave beam Sector angle and the 3rd angle of pitch are overlooked with the 3rd, so that the 3rd fixed space wave beam picks up the mesh in the right-angled bend road Mark sound wave；

Step S2, the information of acoustic wave obtained based on the sonic transducer node array element battle array, is positioned to scene target.

2. airdrome scene target acoustical localization method according to claim 1, it is characterised in that

The second fixed space wave beam includes fixed space wave beam and the second outer fixed space wave beam in second,

Covering of the fan angle is overlooked outside the second of second outer fixed space wave beam and is less than vertical view in second of fixed space wave beam in second Covering of the fan angle,

In described second fixed space wave beam by the sonic transducer array element formation positioned at side where the contact bend center of circle into,

The second outer fixed space wave beam by positioned at it is described contact bend center of circle opposite side sonic transducer array element formation into.

3. airdrome scene target acoustical localization method according to claim 1, it is characterised in that

Covering of the fan angle is overlooked outside the 3rd of 3rd outer fixed space wave beam and is less than vertical view in the 3rd of fixed space wave beam in the 3rd Covering of the fan angle,

The 3rd fixed space wave beam includes fixed space wave beam and the 3rd outer fixed space wave beam in the described 3rd, institute State fixed space wave beam in the 3rd by the sonic transducer array element formation positioned at side where the right-angled bend road center of circle into,

The 3rd outer fixed space wave beam by the sonic transducer array element formation positioned at right-angled bend road center of circle opposite side into.

4. airdrome scene target acoustical localization method according to claim 3, it is characterised in that

Described first, which overlooks sector angle, is less than the described second vertical view sector angle,

Described second, which overlooks sector angle, is less than the described 3rd vertical view sector angle.

A kind of 5. airdrome scene target sound sensing device, it is characterised in that including：

Linear sonic transducer node array element array, including symmetrically it is laid in the sonic transducer section of straight line airfield runway both sides Point array element battle array, the sonic transducer node array element formation are empty into the first fixation that sector angle and first angle of pitch are overlooked with first Between wave beam so that the first fixed space wave beam picks up the target sound waves of the straight line airfield runway,

Bending-type sonic transducer node array element array, including it is laid in the sonic transducer node array element of airport contact bend both sides The laying number that number is less than offside, the sonic transducer node array element shape are laid in battle array, side where the center of circle of the contact bend Into the second fixed space wave beam that sector angle and second angle of pitch are overlooked with second, so that the second fixed space wave beam picks up The target sound waves of the contact bend are taken,

Right-angle type sonic transducer node array element array, including it is laid in the sonic transducer node array element of airport right-angled bend road both sides Battle array, the laying number that number is less than offside is laid in side where the center of circle in the right-angled bend road, and being formed has the 3rd to overlook covering of the fan Angle and the 3rd fixed space wave beam of the 3rd angle of pitch, so that the 3rd fixed space wave beam picks up the right-angled bend road Target sound waves.

A kind of 6. target acoustical alignment system of airdrome scene, it is characterised in that including：

Airdrome scene target sound sensing device as claimed in claim 5；And

Processor, the information of acoustic wave received for receiving the airdrome scene target sound sensing device, and believed according to the sound wave Breath, is positioned to scene target.