CN201773183U - Portable radio direction finding device - Google Patents
Portable radio direction finding device Download PDFInfo
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- CN201773183U CN201773183U CN2010201887005U CN201020188700U CN201773183U CN 201773183 U CN201773183 U CN 201773183U CN 2010201887005 U CN2010201887005 U CN 2010201887005U CN 201020188700 U CN201020188700 U CN 201020188700U CN 201773183 U CN201773183 U CN 201773183U
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Abstract
A portable radio direction finding device comprises an amplitude comparison directive antenna, an interference antenna array, an antenna array of a front-end control circuit and a controlling machine, wherein the controlling machine consists of a main controller, an upper computer, an interface circuit and a power supply circuit. The main controller is provided with a mixer for realize frequency conversion between an antenna output signal and a local oscillation signal generated from a DDS, an adjustable gain controller, an analog-digital converter ADC, a GSM circuit, a radio chip and a field programmable gate array FGPA which is used for regulating all circuits and cache information. The upper computer is provided with a GIS direction finding module, a data and communication processing module, a man-machine interaction interface and an operation system and driving module, wherein the man-machine interaction interface and the operation system and driving module are respectively connected with the GIS direction finding module and the data and communication processing module. The radio direction finding device integrates remote positioning with short-distance accurate approaching, realizes online direction finding through integration of multiple machines, can be operated independently, can find directions by matching the relevant interference algorithm with the amplitude comparison algorithm, and displays direction finding location results graphically on an electronic map by matching with a GIS.
Description
Technical field
The utility model relates to a kind of electronic installation of monitoring electric wave, exactly, relates to a kind of portable wireless direction-finding device that is used for the auxiliary large-scale radio monitoring system of frequency modulation (FM) frequency range, belongs to the radio direction finding equipment technical field.
Background technology
Along with the develop rapidly and the widespread use of wireless communication technology, wireless frequency spectrum has become a kind of non-renewable narrow resources, how rationally to utilize and to supervise the primary work that radio spectrum resources becomes various countries radio control department.Enhanced radio wave duct reason ensures high speed, the efficient transfer of wireless messages, and the consolidation of abundant, the national defence that ensures expanding economy, people's lives and military commanding unimpeded all had extremely important meaning.
Frequency modulation broadcasting (FM) has covered all parts of the country as the main business of radio broadcasting, and public service information such as the transport information of each province and weather forecast all send by this frequency range, thereby the occupancy of this frequency range is high, near saturated.Although standard, bandwidth and the frequency etc. of wireless supervision department frequency-modulation broadcasting have all been done rational distribution, but, part unit or individual are still arranged for various purposes, build f-m broadcast station privately, just launch the frequency modulation wireless signal without permission privately, seriously upset the operation of normal frequency modulation broadcasting, even therefore had serious consequences.So, be badly in need of a kind of equipment or the system that can locate illegal frequency modulation emissive source rapidly, effectively, illegal emissive source is positioned and collects evidence.
At present, the radio monitoring network has all been set up in domestic big or middle city substantially, still, majority is large-scale monitoring station, and its construction cost is high, safeguards that formality is loaded down with trivial details, therefore the quantity of building a station is few, and limited coverage area can't satisfy the covering demand of current wireless pyroelectric monitor task.And along with the continuous development of urban construction, the city high building stands in great numbers, and causes incity, city electromagnetic environment day more complicated.Yet continuing to bring out of low powered radio equipment influences normal radio communication service again in the regional area of being everlasting.After the decay and reflection of the signal of this low-power equipment emission through complex electromagnetic environment, when arriving large-scale monitoring station, its signal intensity and signal quality be obviously decay all, be not enough to be used for it is monitored, sometimes even make large-scale monitoring station effectively to search for, to follow the tracks of and to locate to it.
In order to solve this bottleneck, small-sized or portable wireless monitoring equipment just arises at the historic moment.Compare with large-scale monitoring station, function small-sized or the portable mobile wireless monitoring equipment is simple relatively, is merely able to finish a certain or several monitoring tasks, and the frequency range of monitoring is also limited.But it is convenient to move, and in the wireless monitor in some areas, efficient is higher, more practical; And the networking cost is low, is particularly suitable for being distributed in large quantity remote districts or hot localised points area and realizes the networking monitoring, if be used with large-scale monitoring station, just can reach higher monitoring efficient again.
Now, the portable mobile wireless direction-finding equipment of seeing once in a while on the market, using mostly is based on and approaches that job design produces, in finishing the operation of searching radio interference source, often need equipment such as fixed station, vehicle-mounted movement station or portable station can determine general orientation in advance, and then use the portable mobile wireless direction-finding equipment to approach interference source.Therefore, these portable mobile wireless direction-finding equipments also are difficult to independent use to a certain extent.So developing a kind of portable mobile wireless direction-finding device that can independently use just becomes a focus problem of scientific and technical personnel's concern in the industry.
The utility model content
The purpose of this utility model provides a kind of novel structure, multiple functional, and the portable wireless direction-finding device that direction finding is positioned one is located and closely accurately approached to the collection long path bearing.This device can either be realized online location when multimachine uses, simultaneously, also can work alone by unit under can't online situation; Adopt correlation interference formula algorithm to carry out the electric wave direction finding, and cooperate Geographic Information System (GIS) that direction finding and positioning result are presented on the map of computing machine with graphical form with the mode that amplitude comparison expression algorithm matches.
In order to achieve the above object, the utility model provides a kind of portable wireless direction-finding device, it is characterized in that: this device comprises following two parts: antenna array and by main control computer, interface circuit, the controller that host computer and the power circuit of powering for each parts constitute, wherein antenna array is provided with amplitude comparison expression directional antenna and the front-end controlling circuit as reference antenna or approximant location at least, main control computer is provided with the following control circuit that is linked in sequence: the local oscillation signal that antenna array output signal and the digital compositor DDS that receives provided carries out the frequency mixer that signal frequency is changed, the adjustable gain controller AGC of automatic control signal intensity, with analog signal conversion is the analog to digital converter ADC of digital signal, and as the field programmable gate array FGPA circuit of this main control computer control center, this FGPA circuit also connects digital compositor DDS respectively, adjustable gain controller AGC, global system for mobile communications GSM circuit, radio chip circuit and interface circuit are to regulate and control each circuit and mutual, canned data; The input end of radio chip circuit that is used to monitor pirate radio information and cooperates host computer to carry out the scan function in FM full frequency band radio station is connected amplitude comparison expression directional antenna and loudspeaker or earphone respectively with output terminal; Interface circuit is responsible for finishing the translation function of the communication interface between the signal of the signal of antenna array and main control computer and host computer: the host computer as this device control center is provided with: adopt correlation interference and two kinds of algorithms of amplitude comparison to cooperatively interact and carry out direction finding, and show the direction finding result on electronic chart: Geographic Information System GIS and direction finding algoritic module and the data and the Communications Processor Module in three mutual triangular form zones that form of straight line connect human-computer interaction interface and the operating system and the driver module of these two modules respectively.
Described power circuit is linear stabilized power supply LDO, and the voltage of its output has :+5V ,-5V, 3.7V, 3.3V, 2.5V, 1.8V and 1.2V.
Described front-end controlling circuit is provided with: do not moving or movement velocity can be determined the electronic compass of antenna array reference bearing when low, be used to provide the global position system GPS circuit of precise location information, and the single-chip microcomputer that is used to receive the data of processing electronic compass and the transmission of GPS circuit and controls the electronic switching circuit operation of interfere type aerial array.
Described antenna array also is provided with: be used for the remote interfere type aerial array of location fast, this interfere type aerial array is provided with: four or more direction-finder antenna, the signal processing circuit of each antenna output end, and the electronic switching circuit of the aerial array that all connects of these signal processing circuits.
Between interfere type aerial array in the described antenna array and the main control computer is that binary channels is connected, between amplitude comparison expression directional antenna and the main control computer is that single channel is connected, and single-chip microcomputer adopts serial port to connect electronic switching circuit and interface circuit in electronic compass, global position system GPS circuit, the interfere type aerial array respectively.
FPGA circuit in the described main control computer adopts serial port connecting interface circuit; This FPGA circuit is provided with three control circuits finishing following function respectively: the instruction transformation that host computer is sent becomes the instruction that each functional circuit can be discerned in the main control computer and finishes the instruction transformation circuit of corresponding operating; Respectively DDS, AGC, ADC, GSM circuit and radio chip circuit are carried out the control circuit of respective control function; After the data from ADC, radio chip and GSM circuit that receive are kept in, be forwarded to the data storage repeat circuit of host computer according to the command adapted thereto demand of host computer.
Described interface circuit adopts serial ports to connect single-chip microcomputer, FPGA circuit and GSM circuit respectively, adopts the USB mouth to connect host computer again, is responsible for finishing the conversion of signals between serial communication port and the usb communication mouth.
The utility model portable wireless direction-finding device is used for the direction finding of frequency modulation (FM) frequency range wireless signal, can either realize the online direction finding of multimachine location, also can unit independence direction finding under can't online situation.This device adopts the correlation interference formula to carry out direction finding with the mode that two kinds of algorithms of amplitude comparison expression match, and cooperates Geographic Information System GIS that the result of direction finding and location is presented on the electronic chart with graphical form, direction finding visual result, simple and clear.
The beneficial effect of this device is: by the interfere type antenna direction finding orientation of the illegal emissive source of fast measuring independently just of self, and after approaching illegal emissive source, adopt amplitude comparison expression antenna direction finding just can find target quickly and accurately again; No longer need to be used with other equipment such as fixed station, vehicle-mounted movement station or portable stations.In addition, the circuit structure of this device is simple, reasonable, easy for operation, easy grasp.Realized the integrated of control circuit because of adopting the FGPA circuit, make that the cost of this device is cheaper, in light weight, these characteristics all make this direction-finding device be particularly suitable for portable use and penetration and promotion, use in the built-up urban environment of especially suit to be difficult to cover, electromagnetic environment complexity and signal attenuation reflection are frequent, filled up the blank of existing equipment in current large-scale monitoring network.Unfixing for launch time, the illegal emissive source that launch time is short can also adopt the online locator meams of multimachine of the present utility model, just can arrive at illegal emissive source fast at short notice.Therefore, the utility model has good popularization and application prospect.
Description of drawings
Fig. 1 is that the structure of the utility model portable wireless direction-finding device control circuit is formed block scheme.
Fig. 2 is the fundamental diagram of the utility model portable wireless direction-finding device multimachine location direction finding.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with drawings and Examples.
Referring to Fig. 1, introduce structure of the present utility model and form: the controller that its control circuit is provided with antenna array and is made of main control computer, interface circuit, host computer and the power circuit of powering for each parts.Antenna array wherein is provided with amplitude comparison expression directional antenna and the front-end controlling circuit thereof as reference antenna or approximant location at least, can also expand configuration and be used for the remote interfere type aerial array of location fast.The interfere type aerial array is provided with: four or more direction-finder antenna, the signal processing circuit of each antenna output end, and the electronic switching circuit that all connects of each signal processing circuit.Front-end controlling circuit comprises: not moving or movement velocity when low, be used to the electronic compass of the information of fixing the position; Be used to provide the global position system GPS circuit of precise location information; Be used for receiving the single-chip microcomputer of handling electronic compass information and GPS circuit information and controlling the electronic switching circuit operation of interfere type aerial array.
Main control computer is provided with the following control circuit that is linked in sequence: the frequency mixer that the output signal of the antenna array that receives and local oscillation signal that digital compositor DDS provides are carried out the signal frequency conversion, the adjustable gain controller AGC of automatic control signal intensity, finish the analog to digital converter ADC of modulus signal conversion, and as the field programmable gate array FGPA circuit of main control computer control center.This FGPA circuit also connects digital compositor DDS, adjustable gain controller AGC, global system for mobile communications GSM circuit, radio chip circuit and interface circuit respectively, is used to regulate and control the mutual and buffer memory of each circuit and the information of realization.The input end of radio chip circuit that is used to monitor pirate radio information and cooperates host computer to carry out the scan function in FM full frequency band radio station is connected amplitude comparison expression directional antenna and loudspeaker or earphone respectively with output terminal, realizes short message interacting when wherein the GSM circuit is used for multimachine associating direction finding location.Interface circuit adopts serial ports to connect single-chip microcomputer, FPGA circuit and GSM circuit respectively, adopts the USB mouth to connect host computer again, is responsible for finishing the conversion of signals between serial communication port and the usb communication mouth; Just be responsible for finishing the function switching signal of the communication interface between the signal of the signal of antenna array and main control computer and host computer.Host computer is the control maincenter of this direction-finding device, be provided with in the machine: adopt correlation interference and two kinds of algorithms of amplitude comparison to cooperatively interact and carry out direction finding, and on electronic chart, showing direction finding GIS and direction finding algoritic module and data and Communications Processor Module as a result, the direction finding result who shows on the electronic chart is: three mutual triangular form zones that form of straight line.The human-computer interaction interface and operating system and the driver module that connect above-mentioned two modules respectively.
Be that binary channels is connected between interfere type aerial array and the main control computer in the antenna array of this device, between amplitude comparison expression directional antenna and the main control computer is that single channel is connected, and the serial port of single-chip microcomputer connects electronic switch array circuit and the interface circuit in electronic compass, GPS circuit, the interfere type aerial array respectively.
FPGA circuit in the main control computer also is to adopt serial port connecting interface circuit.This FPGA circuit is provided with three control circuits finishing following function respectively: the instruction transformation that host computer is sent becomes the instruction that each functional circuit can be discerned in the main control computer and carries out the instruction transformation circuit of corresponding operating, respectively each circuit of DDS, AGC, ADC, GSM and radio chip is carried out the control circuit of respective control function; After the data from ADC, radio chip and GSM circuit that receive were kept in, instruction was transmitted to the data storage repeat circuit of host computer according to host computer again.
The power circuit of the utility model device is linear stabilized power supply LDO, and exportable each required when this device work is provided magnitude of voltage comprises :+5V ,-5V, 3.7V, 3.3V, 2.5V, 1.8V and 1.2V.
Direction finding work of the present utility model can be selected two kinds of methods for use: unit direction finding location and online direction finding location.Unit direction finding location is to use this portable wireless direction-finding device to carry out three independent direction findings respectively three places (each other setpoint distance will be arranged) by the tester, just can obtain the delta-shaped region of a mark position, wireless signal transmission source.Online direction finding location is to use this device to carry out direction finding (referring to Fig. 2) simultaneously respectively by three testers, and three directional rays that obtain can cross and form a delta-shaped region.The wireless signal transmission source of being monitored is positioned at this delta-shaped region probably, and the possibility that is positioned at this leg-of-mutton circumscribed circle zone is bigger.After obtaining delta-shaped region, the utility model just can initiatively be sought the emissive source position, and be presented at human-computer interaction interface by the calculation process of the set algorithm module of configuration in the machine.
Following brief description working mechanism of the present utility model and operating process:
(1) after the utility model device powers on, use the ratio width of cloth formula antenna in the antenna array to carry out the monitoring of radiowave earlier, FM signal in this antenna monitoring range is received also after treatment than width of cloth formula antenna, send into the radio chip in the main control computer, the radio chip is circumscribed with loudspeaker or earphone, manually can monitor, judge whether the FM electric wave is legal by loudspeaker or earphone.
(2) if through monitoring comparison, the FM signal of finding a certain frequency place is the illegal wireless signal, then begins to locate the orientation of illegal wireless signal emitting-source.Targeting scheme can be selected in unit location and online location as required.
(3) behind the selected targeting scheme, the host computer in every direction-finding device sends instruction to single-chip microcomputer earlier, is used to obtain the position and the azimuth information of antenna array.The position and the directional information of antenna array are measured by front-end controlling circuit, GPS circuit measuring antenna array position wherein, electronic compass is measured the reference bearing of antenna array, both measurement results are summarised in single-chip microcomputer and handle, and are sent to host computer by single-chip microcomputer via interface circuit then and carry out subsequent treatment.
Usually, use earlier the interfere type antenna to carry out long path bearing, determine the orientation in illegal signals source after, re-use than width of cloth formula antenna and approach operation, find location, illegal signals source.After the interfere type antenna receives the FM signal of illegal signals emissive source, after carrying out processing such as filtering, amplification, send into electronic switching circuit again, electronic switching circuit is chosen 2 road signals and is sent into main control computer and carry out subsequent treatment from 4 road signals that 4 interfere type antennas receive.
(4) after main control computer receives the signal that antenna array imports into, at first allow signal pass through frequency mixer, the required local oscillation signal of frequency mixer is provided by direct digital synthesis circuit (DDS).Signal after the mixing is successively by automatic gain control circuit (AGC), analog to digital converter (ADC), field programmable gate array circuit (FPGA), wherein FPGA circuit control AGC in optimum range, also controls the gain control of signal ADC conversion of signals is become digital signal.This digital signal through interface circuit, is sent into host computer and is carried out subsequent treatment after preliminary computing is carried out in FPGA circuit inside.
(5) host computer is a PC, and it comprises the following function module: human-computer interaction interface, Geographic Information System (GIS) and direction finding algoritic module, data and Communications Processor Module and operating system and driver module.Wherein operating system and driver module are used to support whole host computer, are the operation of PC system, GIS and direction finding algoritic module, data and Communications Processor Module all are to be used to handle above-mentioned two signals, by respective algorithms and calculating, finally draw the position of FM signal emitting-source, and on the GIS human-computer interaction interface, show.Human-computer interaction interface is the operation-interface of user and host computer, and also having many traditional function menus can select for the user: new construction, file management, scanning, blacklist, direction finding, operations such as online.The running environment of this host computer is windows XP.
(6) when adopting online targeting scheme, then need use global mobile communication (GSM) circuit, each direction-finding device circuit by this carries out communication by sending way of short messages.
(7) on electronic chart, cross when demonstrating the general areas at illegal emissive source place when host computer, switch to, use and approach operation, finally find out illegal emissive source location than width of cloth formula antenna than the direction finding of width of cloth formula.
Referring to Fig. 2, introduce position fixing process of the present utility model: according to positioning principle, adopt the self-position of global position system GPS circuit location the utility model direction-finding device earlier, then through crossing calculating, the location of finishing emissive source.At this moment, because of this device is provided with Geographic Information System GIS and direction finding algoritic module, can directly on map, draw and show the direction finding result.
The utility model not only can be realized unit direction finding location, can also carry out multimachine associating direction finding location, can also send locating information in real time by the note of the global system for mobile communications GSM circuit in the main control computer.
In a word, the utility model is applicable to the modulating FM frequency range, can carry out online location under multimachine and the situation of depositing, and is convenient and swift, also can work alone by unit under situation that can't be online simultaneously.The utility model can satisfy the monitoring requirements of most of radiowaves, can be at quickly positioning target under the complex electromagnetic environment, and easy to carry.Interfere type direction finding and the technology that mutually combines than the direction finding of width of cloth formula that this device adopts can and closely approach it in remote location and all show superperformance in the operation.
The utility model has been succeeded in developing performance prototype, and has carried out implementing test, and test findings is successful, has realized goal of the invention.
Claims (7)
1. portable wireless direction-finding device, it is characterized in that: this device comprises following two parts: antenna array and by main control computer, interface circuit, the controller that host computer and the power circuit of powering for each parts constitute, wherein antenna array is provided with amplitude comparison expression directional antenna and the front-end controlling circuit as reference antenna or approximant location at least, main control computer is provided with the following control circuit that is linked in sequence: the local oscillation signal that antenna array output signal and the digital compositor DDS that receives provided carries out the frequency mixer that signal frequency is changed, the adjustable gain controller AGC of automatic control signal intensity, with analog signal conversion is the analog to digital converter ADC of digital signal, and as the field programmable gate array FGPA circuit of this main control computer control center, this FGPA circuit also connects digital compositor DDS respectively, adjustable gain controller AGC, global system for mobile communications GSM circuit, radio chip circuit and interface circuit are to regulate and control each circuit and mutual, canned data; The input end of radio chip circuit that is used to monitor pirate radio information and cooperates host computer to carry out the scan function in FM full frequency band radio station is connected amplitude comparison expression directional antenna and loudspeaker or earphone respectively with output terminal; Interface circuit is responsible for finishing the function switching signal of the communication interface between the signal of the signal of antenna array and main control computer and host computer: the host computer as this device control center is provided with: adopt correlation interference and two kinds of algorithms of amplitude comparison to cooperatively interact and carry out direction finding, and show the direction finding result on electronic chart: Geographic Information System GIS and direction finding algoritic module and the data and the Communications Processor Module in three mutual triangular form zones that form of straight line connect human-computer interaction interface and the operating system and the driver module of these two modules respectively.
2. portable wireless direction-finding device according to claim 1 is characterized in that: described power circuit is linear stabilized power supply LDO, and the voltage of its output has :+5V ,-5V, 3.7V, 3.3V, 2.5V, 1.8V and 1.2V.
3. portable wireless direction-finding device according to claim 1, it is characterized in that: described front-end controlling circuit is provided with: do not moving or movement velocity can be determined the electronic compass of antenna array reference bearing when low, be used to provide the global position system GPS circuit of precise location information, and be used to receive the data of handling electronic compass and the transmission of GPS circuit, and the single-chip microcomputer of the electronic switching circuit operation of control interfere type aerial array.
4. portable wireless direction-finding device according to claim 1, it is characterized in that: described antenna array also is provided with: be used for the remote interfere type aerial array of location fast, this interfere type aerial array is provided with: four or more direction-finder antenna, the signal processing circuit of each antenna output end, and the electronic switching circuit of the aerial array that all connects of these signal processing circuits.
5. according to claim 1 or 4 described portable wireless direction-finding devices, it is characterized in that: between the interfere type aerial array in the described antenna array and the main control computer is that binary channels is connected, between amplitude comparison expression directional antenna and the main control computer is that single channel is connected, and single-chip microcomputer adopts serial port to connect electronic switching circuit and interface circuit in electronic compass, global position system GPS circuit, the interfere type aerial array respectively.
6. portable wireless direction-finding device according to claim 1 is characterized in that: the FPGA circuit in the described main control computer adopts serial port connecting interface circuit; This FPGA circuit is provided with three control circuits finishing following function respectively: the instruction transformation that host computer is sent becomes the instruction that each functional circuit can be discerned in the main control computer and finishes the instruction transformation circuit of corresponding operating; Respectively DDS, AGC, ADC, GSM circuit and radio chip circuit are carried out the control circuit of respective control function; After the data from ADC, radio chip that receive are kept in, be forwarded to the data storage repeat circuit of host computer according to the command adapted thereto demand of host computer.
7. portable wireless direction-finding device according to claim 1, it is characterized in that: described interface circuit adopts serial ports to connect single-chip microcomputer, FPGA circuit and GSM circuit respectively, adopt the USB mouth to connect host computer again, be responsible for finishing the conversion of signals between serial communication port and the usb communication mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201887005U CN201773183U (en) | 2010-05-07 | 2010-05-07 | Portable radio direction finding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201887005U CN201773183U (en) | 2010-05-07 | 2010-05-07 | Portable radio direction finding device |
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| CN201773183U true CN201773183U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201887005U Expired - Fee Related CN201773183U (en) | 2010-05-07 | 2010-05-07 | Portable radio direction finding device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419429A (en) * | 2011-09-13 | 2012-04-18 | 上海无线电设备研究所 | Onboard search machine |
| CN104104416A (en) * | 2013-04-02 | 2014-10-15 | 浪潮乐金数字移动通信有限公司 | A communication link direction display method of a mobile communication terminal, and the mobile communication terminal |
| CN104483656A (en) * | 2014-12-10 | 2015-04-01 | 成都中星世通电子科技有限公司 | Easily-operated radio direction finding equipment |
| CN105099583A (en) * | 2015-06-03 | 2015-11-25 | 朱豪杰 | Multifunctional radio direction-finding and station-listening device |
| CN105526974A (en) * | 2016-01-29 | 2016-04-27 | 成都市新筑路桥机械股份有限公司 | Monitoring device for big displacement telescoping device for bridge usage |
| CN105738867A (en) * | 2016-01-31 | 2016-07-06 | 吉林省广播电视研究所(吉林省新闻出版广电局科技信息中心) | Illegal radio station rapid positioning and monitoring method adopting high-precision clock |
| CN105911516A (en) * | 2016-04-08 | 2016-08-31 | 江苏正赫通信息科技有限公司 | Wireless signal multipath parallel amplitude comparison measuring method |
| CN107765211A (en) * | 2017-10-18 | 2018-03-06 | 国家新闻出版广电总局广播科学研究院 | A kind of detecting system to failing to understand radio and television intrusion signal |
| CN107831517A (en) * | 2017-10-18 | 2018-03-23 | 国家新闻出版广电总局广播科学研究院 | Combined positioning method to failing to understand radio and television intrusion signal multi-point cooperative direction finding |
-
2010
- 2010-05-07 CN CN2010201887005U patent/CN201773183U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419429A (en) * | 2011-09-13 | 2012-04-18 | 上海无线电设备研究所 | Onboard search machine |
| CN104104416A (en) * | 2013-04-02 | 2014-10-15 | 浪潮乐金数字移动通信有限公司 | A communication link direction display method of a mobile communication terminal, and the mobile communication terminal |
| CN104483656A (en) * | 2014-12-10 | 2015-04-01 | 成都中星世通电子科技有限公司 | Easily-operated radio direction finding equipment |
| CN105099583A (en) * | 2015-06-03 | 2015-11-25 | 朱豪杰 | Multifunctional radio direction-finding and station-listening device |
| CN105099583B (en) * | 2015-06-03 | 2017-08-11 | 朱豪杰 | Platform device is listened in multifunctional radio direction finding |
| CN105526974A (en) * | 2016-01-29 | 2016-04-27 | 成都市新筑路桥机械股份有限公司 | Monitoring device for big displacement telescoping device for bridge usage |
| CN105738867A (en) * | 2016-01-31 | 2016-07-06 | 吉林省广播电视研究所(吉林省新闻出版广电局科技信息中心) | Illegal radio station rapid positioning and monitoring method adopting high-precision clock |
| CN105911516A (en) * | 2016-04-08 | 2016-08-31 | 江苏正赫通信息科技有限公司 | Wireless signal multipath parallel amplitude comparison measuring method |
| CN107765211A (en) * | 2017-10-18 | 2018-03-06 | 国家新闻出版广电总局广播科学研究院 | A kind of detecting system to failing to understand radio and television intrusion signal |
| CN107831517A (en) * | 2017-10-18 | 2018-03-23 | 国家新闻出版广电总局广播科学研究院 | Combined positioning method to failing to understand radio and television intrusion signal multi-point cooperative direction finding |
| CN107831517B (en) * | 2017-10-18 | 2021-02-09 | 国家新闻出版广电总局广播科学研究院 | Combined positioning method for multipoint collaborative direction finding of unknown broadcast television intrusion signals |
| CN107765211B (en) * | 2017-10-18 | 2021-05-28 | 国家新闻出版广电总局广播科学研究院 | System for detecting intrusion signal of unknown broadcast television |
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