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WO2008141772A1 - Dispositif et procédé de réception de signaux transmis par satellite - Google Patents

Dispositif et procédé de réception de signaux transmis par satellite Download PDF

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Publication number
WO2008141772A1
WO2008141772A1 PCT/EP2008/003948 EP2008003948W WO2008141772A1 WO 2008141772 A1 WO2008141772 A1 WO 2008141772A1 EP 2008003948 W EP2008003948 W EP 2008003948W WO 2008141772 A1 WO2008141772 A1 WO 2008141772A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
signal
processing unit
directional characteristic
signal processing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2008/003948
Other languages
German (de)
English (en)
Inventor
Wolfgang Bredow
Thomas Burchard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Integrated Electronic Systems !SYS Consulting GmbH
Original Assignee
Integrated Electronic Systems !SYS Consulting GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Integrated Electronic Systems !SYS Consulting GmbH filed Critical Integrated Electronic Systems !SYS Consulting GmbH
Publication of WO2008141772A1 publication Critical patent/WO2008141772A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/34—Adaptation for use in or on ships, submarines, buoys or torpedoes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture

Definitions

  • the invention relates to a device for receiving satellite signals, in particular radio and television signals, with an antenna, a control device and a positioning device, wherein the antenna is mechanically aligned by means of the positioning relative to a satellite.
  • the invention relates to a method for receiving satellite signals on a mobile platform by means of an antenna, wherein the antenna is mechanically aligned by means of a positioning relative to a satellite.
  • a device of the type mentioned above and the above-mentioned method are known from the patent EP 1 519 439 Bl. It is proposed to pivot an antenna in the form of a parabolic or planar antenna by means of a positioning device about a horizontal and about a vertical pivot axis in order to be able to receive satellite signals by means of the antenna. This makes it possible to receive satellite signals on a mobile platform, in particular on a vehicle, such as a motor home, or on ships with good quality.
  • the mechanical alignment of the antenna by pivoting about the two pivot axes requires a few tens of seconds, so that the reception of good quality satellite signals is practically only possible when the mobile platform on which the device is kept stationary.
  • the satellite signals are to be received even when the platform is moving, for example while driving a mobile home or a ship, this requires a complex and expensive positioning device to continuously track the antenna.
  • Such tracking is required on ships even when they are at anchor, as they also perform a rocking motion in this state. For example, an unobstructed television reception on ships, boats or yachts requires an expensive positioning device.
  • Object of the present invention is to provide a device and a method of the type mentioned in such a way that even on a mobile platform satellite signals with good quality can be received inexpensively.
  • This object is achieved in a device of the generic type according to the invention in that the directional characteristic of the antenna is electrically adjustable at least in one direction.
  • the above-mentioned object is achieved according to the invention in that, in addition to the mechanical alignment of the antenna, its directional characteristic is electrically adjusted at least in one direction as a function of the movement of the platform.
  • the idea flows in that even with a structurally simple and cost-effective positioning a coarse mechanical alignment of the antenna can be achieved, for the coarse mechanical alignment of the antenna quite some time may be required, if it is ensured that additionally by an electronic adjustment of the Directional characteristic of the antenna at least in one direction quasi-continuously the movement of the mobile platform can be considered.
  • Antennas with an electrically adjustable directional characteristic are known to the person skilled in the art in various configurations.
  • the directional characteristic which is often referred to as "antenna lobe" can be electronically adjusted without the influence of inertial forces on the antenna.
  • the elevation angle or the azimuth angle of the directional characteristic can be electrically adjustable.
  • both the elevation angle and the azimuth angle of the directional characteristic are electrically adjustable.
  • the directivity as a function of a change in position of the device is electrically adjustable at least in one direction.
  • the movement of the platform on which the device is arranged is detected by means of a sensor device, and the directional characteristic of the antenna is determined as a function of the output voltage. output signal of the sensor device electrically adjusted at least in one direction. In a second direction, a mechanical adjustment can take place.
  • the directional characteristic of the antenna is electrically adjustable in at least one direction, depending on the quality of the received signal of the antenna.
  • the quality of the received signal of the antenna is continuously or periodically detected. If the quality of the received signal changes, the directional characteristic is adjusted to optimize the received signal.
  • the antenna is designed as a planar antenna having a multiplicity of antenna elements which are connected to a signal processing unit, wherein the individual receive signals of the antenna elements can be combined by means of the signal processing unit to form a receive signal of the antenna and wherein the signal processing unit can be controlled by means of the control device.
  • the individual receive signals of the antenna elements which are preferably positioned in a regular arrangement, can be summed up with different phases corresponding to a propagation delay.
  • the propagation delay or phase shift between different individual receive signals takes place in accordance with the desired alignment of the antenna lobe or directional characteristic as a function of a control signal of the control device.
  • the control signal takes into account the movement of the platform on which the device is located.
  • Satellite signals can thus be received by electronic compensation of the movement of the platform in optimal quality. It is advantageous if the signal processing unit is arranged on the rear side of the antenna. This makes it possible to arrange the signal processing unit at a short distance from the individual antenna elements, so that relatively short, interference-insensitive connecting lines between the antenna elements and the signal processing unit can be used.
  • planar antennas comprise a printed circuit board construction into which further electrical circuits in the form of the signal processing unit can be integrated.
  • the directional characteristic of the antenna is electrically adjusted at least in one direction as a function of the quality of the received signal of the antenna.
  • the signal processing unit is arranged downstream of a signal evaluation unit.
  • the signal evaluation unit can provide a control signal which corresponds to the quality of the received signal.
  • the control signal can then form the basis for the electrical adjustment of the directional characteristic of the antenna.
  • the device according to the invention comprises a sensor device, wherein by means of the sensor device a translational or rotational movement of the device can be detected.
  • the device can be fixed to the mobile platform, so that the translational and rotational movement of the device corresponds to the corresponding movement of the platform and consequently the motion of the platform can be detected by means of the sensor device.
  • the output signal of the sensor device can then be used for electrical adjustment of the directional characteristic of the antenna.
  • the sensor device comprises a signal receiver for receiving a navigation signal.
  • the position of the device relative to a satellite can be determined in a customary manner, wherein a change in the position also results in a change of the navigation signal.
  • Such navigation signals are known, for example, in global positioning systems (GPS) for navigation, in particular of motor vehicles.
  • GPS global positioning systems
  • the navigation signal provides geographic location data in conjunction with date and time indications.
  • the control device of the device according to the invention can determine the alignment of the antenna required for optimal reception of satellite signals. If the movement of the platform on which the device is arranged requires a realignment of the antenna, this can be adjusted mechanically by means of a pivoting movement and / or electrically by adjusting the directional characteristic of the antenna.
  • the sensor device has a motion sensor for detecting changes in direction of a translation sensor. or rotational movement of the device.
  • a motion sensor for detecting changes in direction of a translation sensor. or rotational movement of the device.
  • Such an embodiment is particularly advantageous in combination with a signal receiver for receiving navigation signals, because by providing geographical position data of the device and information about changes in direction of the device, the position of the device and thus the required orientation of the antenna relative to a Satellites are determined by dead reckoning very accurately.
  • this comprises a base part on which a pivoting mechanism is held pivotable about a vertical pivot axis, wherein the pivoting mechanism has a holding part on which a supporting part carrying the antenna is pivotally mounted about a horizontal pivot axis.
  • the base part can be designed, for example, in the form of a base plate, which can be fixed to the mobile platform, that is, for example, to a vehicle or a ship.
  • the base part supports the pivoting mechanism, which is pivotable relative to the base part about a vertical pivot axis.
  • the pivoting mechanism comprises a holding part, which may be designed, for example, in the manner of a frame and on which a supporting part is pivotally mounted about a horizontal pivot axis.
  • the support member may be formed, for example in the form of a support bracket, which is preferably configured substantially U-shaped and comprises two parallel aligned support arms, which are interconnected via a crossbar.
  • the aerial can be held on the crossbar.
  • a support may protrude from the traverse, which supports the antenna on the underside.
  • the control device is fixed in a preferred embodiment of the device according to the invention on the base part. The control device is thus not subject to the pivotal movements of the antenna, which performs this for mechanical alignment. It is rather held relative to the platform on which the device is arranged, immovable and thus subject only to the movements of the platform, but not the additional pivotal movements of the antenna.
  • the device according to the invention has a sensor device in an advantageous embodiment.
  • the latter is preferably fixed to the base part and is therefore subject only to the movements of the platform on which the device is arranged, but not the additional movements of the antenna, which performs this for optimal alignment relative to the satellite.
  • the positioning device is arranged in an advantageous embodiment of the device according to the invention on the holding part. It may for example comprise electric motors for pivoting the antenna about the horizontal and vertical pivot axis. Preferably, the electric motors are designed as electrically controllable servo motors, because this allows a very precise mechanical alignment of the antenna.
  • Figure 1 a schematic representation of a device according to the invention for receiving satellite signals
  • FIG. 2 shows a view in the direction of arrow A of an antenna of the device from FIG. 1.
  • FIG. 1 schematically shows a device for receiving satellite signals, in particular for receiving radio and television signals, which is generally designated by the reference numeral 10.
  • the device 10 comprises a planar antenna 12 for receiving satellite signals, in particular for receiving radio and television signals.
  • the planar antenna 12 is fixed to a support member 14 of a pivoting mechanism 16, which has a holding part 18 in addition to the support member 14.
  • the support member 14 includes a substantially U-shaped mounting bracket 20 having a first support arm 21 and a second support arm 22, which are aligned parallel to each other and are rigidly connected to each other via a cross member 23.
  • the planar antenna 12 is fixed. From the traverse 23 is a support arm 24 from which the planar antenna 12 is additionally supported on the underside.
  • the holding part 18 has a holding frame 26, on which the support arms 21 and 22 are articulated with their free ends and which surrounds a holding plate 27, on which a positioning device 29 is held.
  • the holding part 18 is held pivotably about a vertical pivot axis 31 on a base part of the device 10. By pivoting about the pivot axis 31, the azimuth angle of the planar antenna 12 can be changed, that is to say the angle which the projection of the antenna normal assumes on a horizontal plane to the north direction.
  • the base part is in the form of a base plate 33 which in addition to the pivot mechanism 16 also carries a control device 35 and a sensor device 37.
  • the latter comprises a signal receiver 38 for receiving GPS signals and a motion sensor 39 for detecting changes in direction of a translational or rotational movement of the device 10.
  • the support member 14 is pivotable together with the planar antenna 12 relative to the holding part 18 about a horizontal pivot axis 41.
  • the positioning device 29 is used, a first servomotor 43 for pivoting the planar antenna 12 about the vertical pivot axis 31 and a second servo motor 44 for pivoting the planar antenna 12 to the horizontal pivot axis 41 has.
  • the positioning device 29 is mechanically coupled to the base plate 33 and the support bracket 20 to achieve the said pivoting movement.
  • FIG. 2 shows a view of the planar antenna 12 in the direction of arrow A from FIG. It can be seen that the planar antenna 12 has a plurality of antenna elements 46 positioned in a regular arrangement. These are each electrically connected to a rear side of the planar antenna 12 signal processing unit 48. Alternatively, the signal processing unit 48 could also be incorporated into a printed circuit board design. tion of the planar antenna 12 be integrated.
  • the control device 35 is in electrical connection with the signal processing unit 48 via a first control line 51, and an antenna cable can be connected to the signal processing unit 48 in a conventional manner and therefore not shown in the drawing by means of a plug-in connector for connecting the signal processing unit 48 to a receiving device.
  • the individual receive signals of the antenna elements 46 can be combined to form a receive signal of the planar antenna 12, which can be transmitted via the antenna cable to the receiving device.
  • the signal processing unit 48 makes it possible to sum up the individual receive signals with different phase shift according to different transit times. This results in a change in the directional characteristic of the planar antenna 12.
  • the directional characteristic is often referred to as antenna lobe. If the individual received signals are summed up with identical phase position, this simulates an alignment of the antenna lobe perpendicular to the surface of the planar antenna 12.
  • the antenna lobe is to be inclined to the vertical, ie the elevation or azimuth angle of the antenna lobe is to be adjusted, this can be done be achieved in that the individual received signals are added up with different phase position of the signal processing unit 48.
  • the desired electrical alignment of the directional characteristic is specified by the control device 35 via the first control line 51 to the signal processing unit 48.
  • the control device 35 is in electrical connection with the first servomotor 43 via a second control line 53, and the control device 35 is connected to the second servomotor 44 via a third control line 54. the. Via a signal line 56, the control device 35 is connected to the sensor device 37, which has the signal receiver 38 for receiving navigation signals and the motion sensor 39 for detecting translation and rotational movements of the device 10.
  • GPS signals can be received, with which the exact geographical position of the device 10 can be determined. Taking into account the date and time, based on the geographical position data from the controller 35, the optimum orientation of the planar antenna 12 relative to a satellite can be calculated. From the control device 35, control commands to the servomotors 43 and 44 can then be transmitted via the second control line 53 and the third control line 54 for pivoting the planar antenna 12 about the vertical pivot axis 31 and the horizontal pivot axis 41, so that the desired satellite signal is in the best possible Quality can be received.
  • the device 10 according to the invention is particularly suitable for receiving satellite signals on a mobile platform, for example on a moving vehicle or a ship.
  • the movement of the mobile platform is detected by the sensor device 37, and on the basis of the detected movement, the directional characteristic of the planar antenna 12 is electrically adjusted by means of the signal processing unit 48 at least with respect to the elevation angle, preferably also with respect to the azimuth angle, in order also during the movement of the platform satellite signals to receive optimal quality.
  • This allows, for example, a clear television enjoyment on a yacht, which performs a permanent rocking motion.
  • the rocking motion is due to the electronic adjustment of the Directional characteristic of the planar antenna 12 compensated.
  • the electronic adjustment of the directional characteristic is not subject to any inertial forces and can therefore take place continuously as a function of the movement data of the sensor device 37.
  • the directional characteristic can be adjusted electronically in a solid angle of approximately 30 °.
  • a basic orientation of the planar antenna 12 is effected mechanically by said pivoting movements. Although this basic orientation requires a certain alignment time of typically several tens of seconds, it only has to be performed after major changes in the position of the platform on which the device 10 is fixed, whereas smaller ones
  • Position changes can be compensated by the electrical adjustment of the directional characteristic.
  • An advantageous embodiment of the device 10 additionally comprises a dashed line in Figure 1 signal evaluation unit 61 which is fixed to the back of the planar antenna 12 and which is connected via a connecting line, not shown in the drawing with the output of the signal processing unit 48.
  • the signal judgment unit 61 makes it possible to judge the quality of the reception signal of the planar antenna 12 provided by the signal processing unit 48. If the signal evaluation unit 61 detects a change in the quality of the reception signal, it provides the control unit 35 with a correction signal via a signal line, not shown in the drawing that the directional characteristic of the planar antenna 12 can be adjusted as described above by means of the control device 35 and the signal processing unit 48 in order to optimize the quality of the received signal.

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  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne un dispositif de réception de signaux transmis par satellite, comprenant une antenne, un système de commande et un système de positionnement, ladite antenne pouvant être orientée mécaniquement en direction d'un satellite au moyen du système de positionnement. L'invention a pour but de perfectionner le dispositif de telle façon que des signaux de satellites puissent être reçus également sur une plate-forme mobile, économiquement et avec une bonne qualité. A cet effet, l'invention est caractérisée en ce que la caractéristique directionnelle de l'antenne est réglable électriquement au moins dans une direction. L'invention concerne en outre un procédé de réception de signaux transmis par satellite sur une plate-forme mobile.
PCT/EP2008/003948 2007-05-21 2008-05-16 Dispositif et procédé de réception de signaux transmis par satellite Ceased WO2008141772A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007024231.1 2007-05-21
DE102007024231A DE102007024231A1 (de) 2007-05-21 2007-05-21 Vorrichtung und Verfahren zum Empfang von Satellitensignalen

Publications (1)

Publication Number Publication Date
WO2008141772A1 true WO2008141772A1 (fr) 2008-11-27

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ID=39639211

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/003948 Ceased WO2008141772A1 (fr) 2007-05-21 2008-05-16 Dispositif et procédé de réception de signaux transmis par satellite

Country Status (2)

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DE (1) DE102007024231A1 (fr)
WO (1) WO2008141772A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017002470A1 (fr) * 2015-07-02 2017-01-05 株式会社東芝 Dispositif d'antenne plane

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013211712A1 (de) * 2013-06-20 2015-01-08 Siemens Aktiengesellschaft Antennenmodul und Vorrichtung mit Antennenmodul

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US4881078A (en) * 1987-05-29 1989-11-14 Nec Corporation Tracking system with beam switching antenna
GB2253520A (en) * 1991-03-06 1992-09-09 Japan Radio Co Ltd Array antenna and stabilized antenna system
WO1999022422A1 (fr) * 1997-10-24 1999-05-06 Telefonaktiebolaget Lm Ericsson (Publ) Antenne terminale pour des systemes de communication
US6111542A (en) * 1998-04-06 2000-08-29 Motorola, Inc. Rotating electronically steerable antenna system and method of operation thereof
US6377211B1 (en) * 2000-12-13 2002-04-23 Lockheed Martin Corporation Apparatus and method for pointing a directional device from a moving vehicle toward a spacecraft
US20060284775A1 (en) * 2004-06-10 2006-12-21 Raysat, Inc. Applications for low profile two way satellite antenna system

Family Cites Families (3)

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US5227806A (en) * 1991-03-20 1993-07-13 Japan Radio Co., Ltd. Stabilized ship antenna system for satellite communication
US6356239B1 (en) * 2000-08-23 2002-03-12 The Boeing Company Method for maintaining instantaneous bandwidth for a segmented, mechanically augmented phased array antenna
DE20314930U1 (de) 2003-09-26 2003-12-11 Ten Haaft Gmbh Satellitenantenne mit Photovoltaik-Elementen zur Stromversorgung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881078A (en) * 1987-05-29 1989-11-14 Nec Corporation Tracking system with beam switching antenna
GB2253520A (en) * 1991-03-06 1992-09-09 Japan Radio Co Ltd Array antenna and stabilized antenna system
WO1999022422A1 (fr) * 1997-10-24 1999-05-06 Telefonaktiebolaget Lm Ericsson (Publ) Antenne terminale pour des systemes de communication
US6111542A (en) * 1998-04-06 2000-08-29 Motorola, Inc. Rotating electronically steerable antenna system and method of operation thereof
US6377211B1 (en) * 2000-12-13 2002-04-23 Lockheed Martin Corporation Apparatus and method for pointing a directional device from a moving vehicle toward a spacecraft
US20060284775A1 (en) * 2004-06-10 2006-12-21 Raysat, Inc. Applications for low profile two way satellite antenna system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017002470A1 (fr) * 2015-07-02 2017-01-05 株式会社東芝 Dispositif d'antenne plane
JP2017017582A (ja) * 2015-07-02 2017-01-19 株式会社東芝 平面アンテナ装置
US10411342B2 (en) 2015-07-02 2019-09-10 Kabushiki Kaisha Toshiba Planar antenna device

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Publication number Publication date
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