CN203299376U - Radio frequency front end apparatus of portable ground surveillance radar - Google Patents
Radio frequency front end apparatus of portable ground surveillance radar Download PDFInfo
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- CN203299376U CN203299376U CN2013203737824U CN201320373782U CN203299376U CN 203299376 U CN203299376 U CN 203299376U CN 2013203737824 U CN2013203737824 U CN 2013203737824U CN 201320373782 U CN201320373782 U CN 201320373782U CN 203299376 U CN203299376 U CN 203299376U
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Abstract
The utility model discloses a radio frequency front end apparatus of a portable ground surveillance radar. The radio frequency front end apparatus comprises a receiving apparatus, a frequency synthesizer, an emitter, a receiving antenna and an emitting antenna. The receiving apparatus comprises a first mixer, a second mixer and a third mixer, a first and a second band-pass intermediate frequency amplifying circuits, a low noise amplifier and an intermediate frequency output port. The frequency synthesizer comprises a first and a second local oscillator circuits, a constant temperature crystal oscillator and an LFM signal generator. The emitter comprises a power amplifier, a first and a second band-pass circuits and a fourth and a fifth mixers. The radio frequency front end apparatus is applied to a continuous wave speed measuring radar which is mainly applied to the field of road traffic speed measurement. By adopting a combination of a radar signal processor, the radio frequency front end apparatus, the receiving antenna and the emitting antenna, and cooperating with an electronic police system, the portable ground surveillance radar can detect the real speed of each passing vehicle in real time and compare the real speed with a value of a limited speed, and provide reference for detecting and positioning an over-speed vehicle, and low power consumption and low cost are achieved.
Description
Technical field
The utility model relates to a kind of device of the velocity radar of the continuous wave for ground surveillance, relates in particular to a kind of portable type ground surveillance radar radio-frequency front-end equipment.
Background technology
The external continuous wave standard Radar Products that various ways occurred, and in the traffic monitoring, naval vessel is crashproof, meteorological observation, the high field of testing the speed is applied.The F6 type radar velocity measurement capturing system that present European most countries all adopts German ROBOT company to produce, market share is more than 60%.The BR24 continuous wave frequency X-band radar that Norway Navico company produces, non-blind area, close-up images is clear incomparable, without magnetron, but button emission, ultralow Microwave Radiation On Human body is healthy without injury, and cheaper, can be used as the desirable safe navigation radar of medium and small-scale vessel bay and complicated cruiseway.The serial radar of continuous wave navigation that Britain succeeds in developing, be applied in microprocessing in tracking control unit, makes function improve a lot, and improved simultaneously the ability that clutter reduction disturbs.The velocity radar that Denmark Weibel company produces, adopt all solid-state transmitter, and low noise zero intermediate frequency reciver and plane microstrip antenna array are very representative.
This external class continuous wave velocity radar exists complex structure, power consumption is high, and expensive problem, Domestic Scientific Research mechanism is more to the theoretical research of continuous wave radar, and the document of delivering of this respect is also more, but the real product facility of realizing and really applying is always rarely found.The commercial Wuxi City thunder China Tech skill company production of only having has frequency modulated continuous wave radar liquid level gauge Related product, is used for the liquid level instrument measurement in commercial measurement field, can not be applied to the field of testing the speed of vehicle.
The utility model content
The purpose of this utility model provides a kind of portable type ground surveillance radar radio-frequency front-end equipment with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
the utility model comprises receiving trap, frequency synthesizer, emitter, receiving antenna and emitting antenna, described receiving trap comprises low noise amplifier, the first frequency mixer, the first logical intermediate level circuit of band, the second frequency mixer, the second logical intermediate level circuit of band, three-mixer and medium frequency output end mouth, described frequency synthesizer comprises the first local oscillation circuit, the second local oscillation circuit, constant-temperature crystal oscillator device and LFM signal generator, described emitter comprises power amplifier, the second band-pass circuit, the 5th frequency mixer, the first band-pass circuit and the 4th frequency mixer, described receiving antenna successively with described low noise amplifier, described the first frequency mixer, described band leads to intermediate level circuit, described the second frequency mixer, described the second logical intermediate level circuit of band, described three-mixer and described medium frequency output end mouth are connected in series, and the signal output part of described medium frequency output end mouth is connected with the signal input part of radar signal processor, described the 4th frequency mixer successively with described the first band-pass circuit, described the 5th frequency mixer, described the second band-pass circuit, described power amplifier and described emitting antenna are connected in series, described the first frequency mixer to the five frequency mixer all have two signal input parts, two signal output parts of described the first local oscillation circuit respectively with the secondary signal input end of described the first frequency mixer be connected the secondary signal input end of the 5th frequency mixer and be connected, two signal output parts of described the second local oscillation circuit respectively with the secondary signal input end of described the second frequency mixer be connected the secondary signal input end of the 4th frequency mixer and be connected, two signal output parts of described constant-temperature crystal oscillator device respectively with the signal input part of described the second local oscillation circuit be connected the signal input part of LFM signal generator and be connected, two signal output parts of described LFM signal generator respectively with the secondary signal input end of described three-mixer be connected the first signal input end of the 4th frequency mixer and be connected.
The beneficial effects of the utility model are:
The utility model portable type ground surveillance radar radio-frequency front-end equipment is used for the continuous wave velocity radar, the continuous wave thunder that tests the speed is mainly used in the highway communication field of testing the speed, adopt radar signal processor, radio frequency front-end device, receiving antenna and emitting antenna combined, and cooperation electronic police system, can detect in real time the true velocity of each vehicular traffic, and with speed limit, compare,, for over-speed vehicles detects and location provides reference, effectively realized low-power consumption and low cost.
Description of drawings
Fig. 1 is circuit structure theory diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
as shown in Figure 1: the utility model comprises receiving trap, frequency synthesizer, emitter, receiving antenna and emitting antenna, receiving trap comprises low noise amplifier, the first frequency mixer, the first logical intermediate level circuit of band, the second frequency mixer, the second logical intermediate level circuit of band, three-mixer and medium frequency output end mouth, frequency synthesizer comprise the first local oscillation circuit, the second local oscillation circuit, constant-temperature crystal oscillator device and LFM signal generator, emitter comprises power amplifier, the second band-pass circuit, the 5th frequency mixer, the first band-pass circuit and the 4th frequency mixer, receiving antenna successively with low noise amplifier, the first frequency mixer, the logical intermediate level circuit of band, the second frequency mixer, the second logical intermediate level circuit of band, three-mixer and medium frequency output end mouth are connected in series, and the signal output part of medium frequency output end mouth is connected with the signal input part of radar signal processor, the 4th frequency mixer successively with the first band-pass circuit, the 5th frequency mixer, the second band-pass circuit, power amplifier and emitting antenna are connected in series, the first frequency mixer to the five frequency mixer all have two signal input parts, two signal output parts of the first local oscillation circuit are connected with the secondary signal input end of the first frequency mixer and the secondary signal input end of the 5th frequency mixer respectively, two signal output parts of the second local oscillation circuit are connected with the secondary signal input end of the second frequency mixer and the secondary signal input end of the 4th frequency mixer respectively, two signal output parts of constant-temperature crystal oscillator device are connected signal input part with the signal input part of the second local oscillation circuit respectively and are connected with the LFM signal generator, two signal output parts of LFM signal generator are connected with the secondary signal input end of three-mixer and the first signal input end of the 4th frequency mixer respectively.
As shown in Figure 1: the signal that radar signal processor will send is given emitter, and emitter sends to emitting antenna, sends to receiving trap after receiving signal by receiving antenna, then by receiving trap, sends to radar signal processor to carry out target detection.Portable type ground surveillance radar radio frequency front-end device adopts the constant-temperature crystal oscillator device, and the constant-temperature crystal oscillator device is respectively two local oscillation circuits and the LFM signal generator provides stable reference frequency; LFM signal generator and two local oscillation circuits are made mirror image and are suppressed mixing, get upper side band filtering, amplification, and by transmission antennas transmit, are gone out.The echoed signal that receiving antenna is received after low noise amplifier and two local oscillation circuits are made mirror image and suppressed mixing, is taken off linear filter and is amplified, then with the mixing of LFM signal generator, become vision signal.
Claims (1)
1. a portable type ground surveillance radar radio-frequency front-end equipment, is characterized in that: comprise receiving trap, frequency synthesizer, emitter, receiving antenna and emitting antenna, described receiving trap comprises low noise amplifier, the first frequency mixer, the first logical intermediate level circuit of band, the second frequency mixer, the second logical intermediate level circuit of band, three-mixer and medium frequency output end mouth, described frequency synthesizer comprises the first local oscillation circuit, the second local oscillation circuit, constant-temperature crystal oscillator device and LFM signal generator, described emitter comprises power amplifier, the second band-pass circuit, the 5th frequency mixer, the first band-pass circuit and the 4th frequency mixer, described receiving antenna successively with described low noise amplifier, described the first frequency mixer, described band leads to intermediate level circuit, described the second frequency mixer, described the second logical intermediate level circuit of band, described three-mixer and described medium frequency output end mouth are connected in series, and the signal output part of described medium frequency output end mouth is connected with the signal input part of radar signal processor, described the 4th frequency mixer successively with described the first band-pass circuit, described the 5th frequency mixer, described the second band-pass circuit, described power amplifier and described emitting antenna are connected in series, described the first frequency mixer to the five frequency mixer all have two signal input parts, two signal output parts of described the first local oscillation circuit respectively with the secondary signal input end of described the first frequency mixer be connected the secondary signal input end of the 5th frequency mixer and be connected, two signal output parts of described the second local oscillation circuit respectively with the secondary signal input end of described the second frequency mixer be connected the secondary signal input end of the 4th frequency mixer and be connected, two signal output parts of described constant-temperature crystal oscillator device respectively with the signal input part of described the second local oscillation circuit be connected the signal input part of LFM signal generator and be connected, two signal output parts of described LFM signal generator respectively with the secondary signal input end of described three-mixer be connected the first signal input end of the 4th frequency mixer and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203737824U CN203299376U (en) | 2013-06-27 | 2013-06-27 | Radio frequency front end apparatus of portable ground surveillance radar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203737824U CN203299376U (en) | 2013-06-27 | 2013-06-27 | Radio frequency front end apparatus of portable ground surveillance radar |
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| CN203299376U true CN203299376U (en) | 2013-11-20 |
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| CN2013203737824U Expired - Fee Related CN203299376U (en) | 2013-06-27 | 2013-06-27 | Radio frequency front end apparatus of portable ground surveillance radar |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150332563A1 (en) * | 2014-05-19 | 2015-11-19 | Donnell A. Davis | Wearable Pedestrian Safety Radar System |
| CN105139662A (en) * | 2015-08-18 | 2015-12-09 | 深圳市林润实业有限公司 | Motor vehicle driving speed measurement device based on bluetooth technology and method for operating the device |
| CN107346022A (en) * | 2016-05-08 | 2017-11-14 | 南京理工大学 | High accuracy based on microwave interferometer surveys ship radar and speed-measuring method |
| CN118644996A (en) * | 2024-07-03 | 2024-09-13 | 亿咖通(湖北)技术有限公司 | Method, device, electronic device and storage medium for identifying speed measurement points along the way |
-
2013
- 2013-06-27 CN CN2013203737824U patent/CN203299376U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150332563A1 (en) * | 2014-05-19 | 2015-11-19 | Donnell A. Davis | Wearable Pedestrian Safety Radar System |
| US9655390B2 (en) * | 2014-05-19 | 2017-05-23 | Donnell A. Davis | Wearable pedestrian safety radar system |
| CN105139662A (en) * | 2015-08-18 | 2015-12-09 | 深圳市林润实业有限公司 | Motor vehicle driving speed measurement device based on bluetooth technology and method for operating the device |
| CN105139662B (en) * | 2015-08-18 | 2017-06-16 | 深圳市林润实业有限公司 | Vehicle running speed based on Bluetooth technology determines device and its operation method |
| CN107346022A (en) * | 2016-05-08 | 2017-11-14 | 南京理工大学 | High accuracy based on microwave interferometer surveys ship radar and speed-measuring method |
| CN107346022B (en) * | 2016-05-08 | 2020-12-04 | 南京理工大学 | High-precision ship measuring radar and speed measuring method based on microwave interferometer |
| CN118644996A (en) * | 2024-07-03 | 2024-09-13 | 亿咖通(湖北)技术有限公司 | Method, device, electronic device and storage medium for identifying speed measurement points along the way |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140627 |
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| EXPY | Termination of patent right or utility model |