CN105425219A - Radar detection device - Google Patents
Radar detection device Download PDFInfo
- Publication number
- CN105425219A CN105425219A CN201510107403.0A CN201510107403A CN105425219A CN 105425219 A CN105425219 A CN 105425219A CN 201510107403 A CN201510107403 A CN 201510107403A CN 105425219 A CN105425219 A CN 105425219A
- Authority
- CN
- China
- Prior art keywords
- radar
- signal
- processing unit
- central processing
- heterodyne oscillator
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
- G01S13/92—Radar or analogous systems specially adapted for specific applications for traffic control for velocity measurement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/021—Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals
- G01S7/022—Road traffic radar detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/04—Display arrangements
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
- G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency
Abstract
The invention provides a radar detection device, which includes an antenna connected with a signal receiver; a first mixer for mixing the signals of the antenna with the signals of a first heterodyne oscillator; an intensifier; a second mixer for mixing intensified signals with signals from at least one second heterodyne oscillator; a band-pass filter; a signature module; and a central processor. The information of a radar can be detected based on the output of an audio amplifier and the output of a dynamic loudspeaker. Therefore, the central processor controls at least one second heterodyne oscillator and one first heterodyne oscillator by a sawtooth voltage generator connected with the central processor. In addition, the radar detection device comprises a photodiode and a laser module connected with the photodiode. The signals of the laser module are analyzed by the central processor. The technical effect of the invention indicates that the sensitivity and the interference immunity are improved.
Description
Technical field
Disclosed technical scheme relates to the field of the checkout equipment being designed to warning driver and passenger when other violations needing speed control or law enforcement agency's monitoring.
Background technology
In fact all detections of radar equipment (the dedicated version exceptions of more possible costlinesses) up to now make use of equivalent principle, algorithm and summary scheme, run in a similar manner and present common shortcoming.
1. the poor sensitivity of pair various modern police radar.
The classical scheme of detections of radar equipment (RD) is carried out in this mode only detecting unmodulated signal (not having the police radar of this signal) or the signal with the large duration at all.The sensitivity with the radar of short pulse (Robot, Mesta) can reduce by ten times and hundred times, is low to moderate and completely loses sensitivity.
2. the radiation source reaction of pair non-police radar
This is the main cause that a lot of people is unwilling to buy RD.It is spied on each automatically-controlled door, has each car of blind area detecting device or cruise active control.A response to police radar may be determined hardly among tens and a hundreds of response.The quantity of last this interference source will increase; Can not be checked out them in the operation of classical scheme.
3. omit the single transmit of manual radar
Classical RD order and very slowly sweep limit.Because it is just scanning another part of other scope or same scope at x time, so can single transmit be missed.
4. need to select operational mode
The recommended low sensitivity mode that oneself utilizes of user is compromised between sensitivity and anti-interference, blocks some scopes and other setting.Generally acknowledged optimum setting can be selected under any condition.In fact, this is not result and is only the attention rate of their scheme.Usually, domestic consumer does not have any knowledge correctly customizing detecting device so that realize under any circumstance needed for anti-interference by the remarkable reduction of sensitivity.User wishes the RD using the principle based on " namely equipment of opening set out " to run.Among all settings, they only need volume and screen intensity.
The radar detector described in the RF patent No. 124404 on January 20th, 2013 is the immediate technical scheme eliminating above listed a series of shortcoming.This radar detector comprises the scheme of the signal transacting including the booster, comparer and the logic analyzer that are linked in sequence extraly.Therefore, the intermediate-freuqncy signal of equipment is transferred into booster, and logic analyzer is connected with comparer by its first output, first of logic analyzer exports the signal for transmitting about comparative level change, and the second output is the device of indication equipment process and operation or the door of processor.Therefore, signal transacting scheme performs detection to intermediate-freuqncy signal, and perform following operating at least one or more:
I. the pulse-response amplitude in the signal of detection and programmatic predetermined level order are compared;
Ii. the recurrence interval of programmatic predetermined level to the signal detected is utilized to compare;
Iii. the duration of the pulse of being launched by the signal received and programmatic predetermined duration are compared.
The shortcoming of this radar detector is that sensitivity is not enough.
Utilize the signature of signal to filter, all above-mentioned shortcomings can be eliminated.
A kind of radar detector can be obtained, its:
-utilization is judged all known police radars to the determination of its type;
-sensing range will not rely on modulation type and only depend on signal intensity (even if when equipment is arranged on the back side, yet will see telechiric device from afar);
-will not single transmit be omitted;
-opposite house, blind area detecting device etc. will not respond (may respond by mistake will be down to zero);
-will the unnecessary setting of user do not comprised.
Modern police radar
For the uniqueness of signal of interest, all modern police radars can be divided into two large types.
1.Doppler (Doppler) radar
This radar comprises such as KRIS, Binar and Vizir.These radars utilize Doppler frequency directly to determine speed.The pulse of launching has the large duration.As " Simicon " slip-stick artist explain, pulse cannot be shorter than 16ms, otherwise spread spectrum is too many so that Doppler frequency is difficult to determine.Under these radars may operate in single transmit pattern.
2. non-radar Doppler
These radars comprise Strelka, Robot, Mesta, Krechet and Kordon.These radars do not utilize Doppler frequency to determine speed, but they determine speed based on to the determination of other parameters (distance, position angle etc.).They launch short pulse (microsecond pulse), and Strelka launches even nanosecond pulse.They can utilize some running frequencies.These radars run in a continuous mode; And do not comprise single transmit pattern.
May the following main radar type used will be the second, because they show larger potentiality, not only can writing speed, other violation can also be recorded.
Summary of the invention
The technique effect of the technical assignment announced comprises sensitivity and anti-interference strengthens.
Technical result comprises: antenna, and it is connected with the signal receiver of radar detector, and the signal of aerial signal with the first heterodyne oscillator mixes by the signal receiver of radar detector; Booster (у с и л и т e л я); Second mixer, the signal strengthened mixes with the signal from least one the second heterodyne oscillator by it; Bandpass filter; Signature blocks; And central processing unit, it reflects information about the radar detected by utilizing note amplifier and dynamic loudspeaker (д и н а м и к а).Thus, central processing unit utilizes connected voltage ramp generator to perform the management at least one the second heterodyne oscillator and the first heterodyne oscillator.Further, equipment comprises the laser module of photodiode and connection, and the signal from the laser module connected is analyzed by central processing unit.
Signature blocks ADC, digital band-pass filter are connected with at least one digital comparator, and each digital comparator is connected with signature analyzer, and ADC is connected with at least one additional character comparer simultaneously, and each additional character comparer is also connected with signature analyzer.Thus, the information about the radar detected and signal intensity to the signal in the output checking all comparers, and is sent to central processing unit for the consistance with the known radar emission parameter be stored in wherein by signature analyzer.
In addition, bandpass filter can be connected with frequency discriminator and comparer, and the output of comparer is connected with central processing unit.
Similarly, central processing unit can have the extra possibility data on the radar that detects exported over the display.
Accompanying drawing explanation
By the following drawings, disclosed technical scheme is described:
Fig. 1 illustrates the General structure scheme of the radar detector proposed.
Fig. 2 illustrates the possible organization plan of signature blocks.
Embodiment
Equipment shown on Fig. 1 to 2 runs as follows.The signal received by antenna 1 enters the first mixer 2, mixes to be converted into the first intermediate frequency with the signal of the first heterodyne oscillator 16 this its.First heterodyne oscillator 16 is voltage-controlled generators.Its frequency changes according to the control voltage received from voltage ramp generator 17, radar detector is scanned all frequency ranges that police radar can be movable.Then the first intermediate-freuqncy signal is sent to the second mixer 4 by booster 3, mixes to convert the second intermediate frequency further to the signal of the second heterodyne oscillator 15 this its.Some the second heterodyne oscillators alternately opened may be used for scanning some frequency ranges.Second intermediate-freuqncy signal is transferred into signature blocks 9 via bandpass filter 5, the parameter of the signal of the parameter of the signal received and known police radar compares by this signature blocks 9, if consistent, then the information about the police radar type detected is sent to processor 8.Similarly, the information about signal intensity can be transmitted.The information that central processing unit analysis receives, and export by the information on display 10 and notify by the voice signal produced by note amplifier 13 and dynamic loudspeaker 14 radar that user detects.Processor 8 also controls the operation of voltage ramp generator 17 and heterodyne oscillator 15,16.The chain comprising frequency discriminator 6 and comparer 7 is used in conventional radar detector the arbitrary signal received in police radar frequency range, and signal can be stored in signature RD for having the detection of the radar of unknown signaling parameter.If do not need the input of unknown radar, then this chain can be turned off by processor or not exist.Photodiode 12 and laser module 11 are for Received signal strength from laser speed detecting device.
Fig. 2 illustrates the possible organization plan of signature blocks.It is evident that, signature analysis needs the frequency division of frequency of operation very close to each other.Need the narrow-band pass filter of enough fast responses, its have sharp cut-off amplitude frequency curve, to exceed the scope accepting frequency band the degree of depth suppress.In this case, recommendation digital band-pass filter 19.Need some digital comparators 20 to measure power level.The quantity of comparer 20 is corresponding with the quantity of the power level shown by radar detector.Arrow signal may will be attenuated owing to exporting the frequency spectrum of non-constant width.Here it is can need to be connected to wave filter why before another group comparer 20 with arrow work (and if like this, then there are other radars with nanosecond pulse).Signature analyzer 21 checks signal in the output of all comparers for the consistance of known radar emission parameter (duration of the termination between duration of pulse, pulse, pulse repetition time) and will be sent to central processing unit 8 about all radars detected with the information of the power of the signal received.The all follow-up parts of digital filter and signature blocks will work fast enough (if the second intermediate frequency of radar detector does not change, then ADC discretize frequency is by about 40MHz).It is evident that, the processor be usually used in radar detector does not allow to implement this signature signal process.But such as PLISFPGA can be utilized to implement.Now, there is the quite cheap chip copied from FPGA, have the resource of sufficient amount to implement all signature blocks schemes (ADC exception), such as, the Spartan-3AN chip of Xilinx company.
Scanning algorithm
Do not use the police radar with Ka scope in Russia, and may will use never.If this is because the scanning of different range produces the problem of signature detection, Ka scope can disabled (and being only activated) in overseas during travel, and if the frequency of the first heterodyne oscillator is changed, then K and X scope can be synchronously scanned.In Pilot21R, the Sho-MeG800 and other the detecting device this mode that the second heterodyne oscillator does not switch to make X and K scope be received simultaneously along each beam direction that are in the same receiver frequency of the first heterodyne oscillator are selected.Main visual cognitive ability is in K scope.
All running frequencies are lower than minimum K range boundary.We find some RobotSD-580 radars is all identical.Obviously, the be sure oing to detect and need to scan the scope of 24.00GHz to 24.30GHz of all radars.
Signature analysis possible be limited by meeting the following conditions one:
Ts<min(Ton,Toff)
Tw>Ton+Toff
Wherein Ton is the duration of radar transmitted pulse,
Toff is the duration of the time-out between pulse,
Ts is the scan period of gamut,
Tw is the time that the radar signal detected in bandpass filtering in the process of scanning exists.
Therefore, we receive two kinds of scan methods:
Rapid scanning, namely now the scan period is shorter than the duration of the most short pulse of all known radars and the ofest short duration duration stopped.The duration of the time-out between the duration of radar pulse or pulse utilizes measures the calculating of the scan period that detected during the signal with definite frequency.
Slow scanning, the most long period that the cycle pulse be longer than from all known radar that namely now signal exists in acceptable bandwidth repeats.The duration of the time-out between the duration of radar pulse or pulse is directly measured.
It is evident that, slow scanning is unsuitable for radar Doppler, because they can run in single transmit pattern, means that most probable is missed by single transmit.Rapid scanning for non-radar Doppler is almost impossible due to the short duration of pulse.Attempt to find for fast radar Doppler and also do not bring forth good fruit for the slow this scan period non-radar Doppler.The fact still utilized is, all non-radar Dopplers for good and all run, and in the fraction of scope, search for this radar and these parts in turn during each scan period.That is, the control voltage of the first heterodyne oscillator should approximately change with sawtooth fashion.
The technical scheme announced can utilize device known in technical field and parts to implement.It corresponds to " industrial usability " condition.
Claims (4)
1. a radar detector, comprising: antenna, is connected with signal receiver; First mixer, mixes the signal from described antenna with the signal of the first heterodyne oscillator; Booster; Second mixer, mixes the signal strengthened with the signal from least one the second heterodyne oscillator; Bandpass filter; Signature blocks; And central processing unit, utilize note amplifier and dynamic loudspeaker to export information about the radar detected; Wherein said central processing unit utilizes connected voltage ramp generator to control at least one second heterodyne oscillator and first heterodyne oscillator, the laser module that described radar detector also comprises photodiode and is connected with described photodiode, the signal from described laser module is analyzed by described central processing unit.
2. radar detector as claimed in claim 1, it is characterized in that, described signature blocks comprises: ADC, digital band-pass filter, described digital band-pass filter is connected with at least one digital comparator, each digital comparator is connected with signature analyzer, and described ADC is connected with at least one additional character comparer, each additional character comparer is also connected with described signature analyzer, wherein said signature analyzer for the consistance with the known radar emission parameter be stored in wherein to the signal in the output checking all comparers, and described signature blocks is sent to described central processing unit by about the radar detected and the information of the power of the signal detected.
3. radar detector as claimed in claim 1, it is characterized in that, described bandpass filter is connected with frequency discriminator, and described frequency discriminator is connected with described comparer, and the output of described comparer is connected with described central processing unit.
4. radar detector as claimed in claim 1, is characterized in that, described central processing unit is suitable for the information about the radar detected to export over the display.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2014136213/07A RU2577848C1 (en) | 2014-09-05 | 2014-09-05 | Radar detector |
| RU2014136213 | 2014-09-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105425219A true CN105425219A (en) | 2016-03-23 |
Family
ID=55503547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510107403.0A Pending CN105425219A (en) | 2014-09-05 | 2015-03-12 | Radar detection device |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20160029618A (en) |
| CN (1) | CN105425219A (en) |
| RU (1) | RU2577848C1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974380A (en) * | 2016-06-01 | 2016-09-28 | 上海铁路通信有限公司 | On-board speed measuring radar antenna module detection circuit |
| CN107167767A (en) * | 2017-04-19 | 2017-09-15 | 江苏理工学院 | High-precision locating method in a kind of visible ray room based on SC FDMA |
| CN111587380A (en) * | 2018-01-11 | 2020-08-25 | 罗伯特·博世有限公司 | Radar system with at least one data line that can be encrypted |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102301147B1 (en) * | 2016-03-23 | 2021-09-14 | 주식회사 제너럴웨이브 | Radar detector which can discriminate signal pattern and method of detecting signal |
| RU169537U1 (en) * | 2016-09-14 | 2017-03-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет геосистем и технологий" (СГУГиТ) | Radar detector |
| KR102281810B1 (en) * | 2021-01-13 | 2021-07-26 | 주식회사 휴리오 | Radar detector and method for signal pattern detection using the same |
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| CN1367393A (en) * | 2001-01-23 | 2002-09-04 | 白金情报通信株式会社 | Control method of wide-band radar detector and its equipment |
| CN1402017A (en) * | 2001-08-22 | 2003-03-12 | 白金情报通信株式会社 | Wideband radar detector with electronic compass |
| CN1750414A (en) * | 2004-09-15 | 2006-03-22 | 日本电气株式会社 | Wireless Telecom Equipment and radar detecting method thereof |
| KR20090107744A (en) * | 2008-04-10 | 2009-10-14 | 김동렬 | Radar detector |
| CN102985843A (en) * | 2010-03-30 | 2013-03-20 | 护航制造公司 | Digital receiver techniques in radar detectors |
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| JP2002006033A (en) * | 2000-06-20 | 2002-01-09 | Uniden Corp | Radar detector |
| US6567035B1 (en) * | 2001-11-30 | 2003-05-20 | Bbnt Solutions Llc | Systems and methods for networking radar detectors |
| WO2004092763A2 (en) * | 2003-04-08 | 2004-10-28 | Globespanvirata, Inc. | Radar detector having a multi-period peridocity validator and method therefor |
| RU2009117058A (en) * | 2009-05-04 | 2010-11-10 | Общество с ограниченной ответственностью ООО "ФЕРРУМ" (RU) | VEHICLE INFORMATION SYSTEM, METHOD OF WORK VEHICLE INFORMATION SYSTEM AND ROUTE COMPUTER WITH A RADAR DETECTOR |
| RU2515465C2 (en) * | 2009-12-07 | 2014-05-10 | Кобра Электроникс Корпорейшн | Method to analyse data received from combined detectors of radars |
| KR101221668B1 (en) * | 2011-04-04 | 2013-01-14 | 주식회사 디알아이 | Radar Detector Having Power On and Off of Its Oscillator |
| RU124404U1 (en) * | 2012-09-12 | 2013-01-20 | Общество с ограниченной ответственностью "Дискурс" | RADAR DETECTOR FOR DETECTION OF SIGNALS OF RADAR INSTALLATIONS OF CONTROL OF SPEED OF MOTION OF VEHICLES |
-
2014
- 2014-09-05 RU RU2014136213/07A patent/RU2577848C1/en not_active IP Right Cessation
- 2014-12-03 KR KR1020140172459A patent/KR20160029618A/en not_active Application Discontinuation
-
2015
- 2015-03-12 CN CN201510107403.0A patent/CN105425219A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4961074A (en) * | 1987-12-23 | 1990-10-02 | B.E.L-Tronics Limited | Multiband radar detector |
| CN1367393A (en) * | 2001-01-23 | 2002-09-04 | 白金情报通信株式会社 | Control method of wide-band radar detector and its equipment |
| CN1402017A (en) * | 2001-08-22 | 2003-03-12 | 白金情报通信株式会社 | Wideband radar detector with electronic compass |
| CN1750414A (en) * | 2004-09-15 | 2006-03-22 | 日本电气株式会社 | Wireless Telecom Equipment and radar detecting method thereof |
| KR20090107744A (en) * | 2008-04-10 | 2009-10-14 | 김동렬 | Radar detector |
| CN102985843A (en) * | 2010-03-30 | 2013-03-20 | 护航制造公司 | Digital receiver techniques in radar detectors |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974380A (en) * | 2016-06-01 | 2016-09-28 | 上海铁路通信有限公司 | On-board speed measuring radar antenna module detection circuit |
| CN105974380B (en) * | 2016-06-01 | 2018-06-19 | 上海铁路通信有限公司 | A kind of vehicle-mounted speed measuring radar Anneta module detection circuit |
| CN107167767A (en) * | 2017-04-19 | 2017-09-15 | 江苏理工学院 | High-precision locating method in a kind of visible ray room based on SC FDMA |
| CN111587380A (en) * | 2018-01-11 | 2020-08-25 | 罗伯特·博世有限公司 | Radar system with at least one data line that can be encrypted |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160029618A (en) | 2016-03-15 |
| RU2577848C1 (en) | 2016-03-20 |
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