CN201285421Y - Broadband five channel radio monitoring and super-resolution direction-finding mobile station system - Google Patents
Broadband five channel radio monitoring and super-resolution direction-finding mobile station system Download PDFInfo
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- CN201285421Y CN201285421Y CNU2008201859192U CN200820185919U CN201285421Y CN 201285421 Y CN201285421 Y CN 201285421Y CN U2008201859192 U CNU2008201859192 U CN U2008201859192U CN 200820185919 U CN200820185919 U CN 200820185919U CN 201285421 Y CN201285421 Y CN 201285421Y
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Abstract
The utility model relates to a broadband five-channel radio monitoring and super-resolution direction-finding mobile station device which comprises a vertical polarization passive/active direction-finding antenna array, an electrical rotating switch unit, an RF amplifier module, a five-channel direction-finding receiver, a monitoring direction-finding processing module, a computer system, a medium short wave monitoring antenna, an ultrashort wave monitoring antenna, a microwave monitoring antenna, a monitoring receiver, and the like. The utility model has the advantages of modularization combination, light structure, maneuvering and strong occultation performance, a space spectrum estimation super-resolution direction-finding technology and a DSP digital signal processing technology are adopted to effectively distinguish a plurality of simultaneous co-channel signals and improve the angle estimated accuracy, the angle resolving power and other related parameter accuracy of space signals in system processing bandwidth, a passive/active direction-finding antenna array is adopted to solve the problem of cross coupling among antenna array elements and eliminate the coupling and the phase ambiguity among unit antennae, five antenna elements are synchronously sampled to ensure synchronization, high speed, accuracy and strong disturbance resistance, and the dynamic application range is wide.
Description
Technical field:
The utility model relates to Wide-band 5-channel radio monitoring and super-resolution direction-finding mobile station equipment, belong to the array signal digital processing direction finding technology field in the communication technology.
Background technology:
At present, the excellent properties of space spectrum estimation ultra-resolution rate direction finding technology has been subjected to the attention in domestic and international radio monitoring and direction-finding field.Except solving many signals simultaneous direction finding and differentiating with the direction finding that transmits of multiple spot frequently, also can distinguish under certain conditions because the coherent signal that multipath causes, so can be widely used in the radio direction finding (RDF) under the complex electromagnetic environment of city, and have broad application prospects in various fields such as radar, communication, sonars.And movement station has maneuverability, convenient and swift, disguised characteristic such as strong, thus five channel super-resolution direction-finding technology are applied on the mobile platform, and then expansion track-while-scan monitoring and direction-finding scope.
Summary of the invention:
The purpose of this utility model is at the problems referred to above, Wide-band 5-channel radio monitoring and super-resolution direction-finding mobile station equipment are proposed, adopt super-resolution technique and DSP Digital Signal Processing, the statistic algorithm of uses advanced, be equipped with five unit vertical polarization DF antenna system, monitoring aerial (medium short wave, ultrashort wave (USW), microwave), five channel direction-finding receivers, monitoring receiver etc., realize the radio signal in 100KHz～40GHz broadband is monitored and the high resolving power direction finding.
Technical solution of the present utility model: its structure be vertical polarization passive/signal output part of active direction estimation antenna array connects electricity and outwards winding and close first signal input part of unit, the outward winding signal output part that closes the unit of electricity connects first signal input part of RF amplifier module A, the signal output part of RF amplifier module A connects first signal input part of five channel direction-finding receivers, first corresponding the joining of signal I/O end of the signal output/input end of five channel direction-finding receivers and computer system, the secondary signal I/O end of computer system and corresponding the joining of signal output/input end of monitoring and direction-finding processing module, corresponding the joining of first signal input part of first signal output part of monitoring and direction-finding processing module and monitoring receiver A, corresponding the joining of first signal input part of the secondary signal output terminal of monitoring and direction-finding processing module and RF amplifier module B, the 3rd signal output part of monitoring and direction-finding processing module is passive with vertical polarization/corresponding joining of signal input part of active direction estimation antenna array, the 4th signal output part of monitoring and direction-finding processing module is outwarded winding with electricity and is closed corresponding the joining of secondary signal input end of unit, corresponding the joining of secondary signal input end of the 5th signal output part of monitoring and direction-finding processing module and RF amplifier module A, corresponding the joining of secondary signal input end of the 6th signal output part of monitoring and direction-finding processing module and five channel direction-finding receivers, the medium short wave monitoring aerial, ultrashort wave (USW) monitoring aerial A, the signal output part of ultrashort wave (USW) monitoring aerial B respectively with corresponding joining of secondary signal input end of RF amplifier module B, microwave monitoring aerial A, the signal output part of microwave monitoring aerial B respectively with corresponding joining of input end of RF amplifier module C, corresponding the joining of second input end of the output terminal of RF amplifier module B and monitoring receiver A, corresponding the joining of signal input part of the output terminal of RF amplifier module C and monitoring receiver B, the 3rd signal I/O end of computer system and corresponding the joining of signal output/input end of monitoring receiver A, the 4th signal I/O end of computer system and corresponding the joining of signal output/input end of monitoring receiver B, corresponding the joining of signal input part of first signal output part of computer system and headstock azimuth indicator, corresponding the joining of signal input part of the secondary signal output terminal of computer system and printer, corresponding the joining of signal output part of first signal input part of computer system and GPS, corresponding the joining of signal output part of the secondary signal input end of computer system and electronic compass, computer system and hub join.
Advantage of the present utility model: system modular combination, light, the maneuverability, disguised strong of structure; Adopt space spectrum estimation ultra-resolution rate direction finding technology and DSP Digital Signal Processing, utilization MUSIC Multiple Signal Classification statistic algorithm, can effectively distinguish a plurality of co-channel signals that occur simultaneously, improve angle estimated accuracy, angular resolution and other correlation parameter precision of spacing wave in the system handles bandwidth greatly; Adopt passive/active direction estimation antenna array, solved the mutual coupling problem between each bay preferably, got rid of coupling and phase ambiguity between element antenna; Five antenna elements are sampled simultaneously, guarantee synchronously, fast, accurately, antijamming capability is strong; The low noise amplifier that has adopted five good channel direction-finding receivers of phase equalization and had amplification, straight-through, three kinds of functions of decay has enlarged the dynamic application scope of received signal.
Description of drawings:
Accompanying drawing 1 is the utility model embodiment electricity theory diagram
Accompanying drawing 2 is that electricity is outwarded winding and closed unit electricity principle schematic
Accompanying drawing 3 is RF three function amplifiers electricity theory diagrams
Accompanying drawing 4 is that power divider is the structured flowchart of example with the 1:2 divider
Accompanying drawing 5 be vertical polarization passive/active direction estimation antenna array (movement station with) floor map
Among the figure 1 be vertical polarization passive/active direction estimation antenna array, the 2nd, the electricity unit, pass of outwarding winding, the 3rd, RF amplifier module A, 4 is five channel direction-finding receivers, the 5th, the monitoring and direction-finding processing module, the 6th, computer system, the 7th, the medium short wave monitoring aerial, the 8th, ultrashort wave (USW) monitoring aerial A, the 9th, ultrashort wave (USW) monitoring aerial B, the 10th, microwave monitoring aerial A, the 11st, microwave monitoring aerial B, the 12nd, RF amplifier module B, the 13rd, RF amplifier module C, the 14th, monitoring receiver A, the 15th, monitoring receiver B, the 16th, electric battery or civil power, the 17th, UPS, the 18th, inverter, the 19th, the headstock azimuth indicator, the 20th, GPS, the 21st, electronic compass, the 22nd, printer.
Embodiment
Contrast accompanying drawing 1, its structure be vertical polarization passive/signal output part of active direction estimation antenna array 1 connects electricity and outwards winding and close first signal input part of unit 2, the outward winding signal output part that closes unit 2 of electricity connects first signal input part of RF amplifier module A, the signal output part of RF amplifier module A connects first signal input part of five channel direction-finding receivers 4, first corresponding the joining of signal I/O end of the signal output/input end of five channel direction-finding receivers 4 and computer system 6, the secondary signal I/O end of computer system 6 and corresponding the joining of signal output/input end of monitoring and direction-finding processing module 5, corresponding the joining of first signal input part of first signal output part of monitoring and direction-finding processing module 5 and monitoring receiver A, corresponding the joining of first signal input part of the secondary signal output terminal of monitoring and direction-finding processing module 5 and RF amplifier module B, the 3rd signal output part of monitoring and direction-finding processing module 5 is passive with vertical polarization/corresponding joining of signal input part of active direction estimation antenna array 1, the 4th signal output part of monitoring and direction-finding processing module 5 is outwarded winding with electricity and is closed corresponding the joining of secondary signal input end of unit 2, corresponding the joining of secondary signal input end of the 5th signal output part of monitoring and direction-finding processing module 5 and RF amplifier module A, corresponding the joining of secondary signal input end of the 6th signal output part of monitoring and direction-finding processing module 5 and five channel direction-finding receivers 4, medium short wave monitoring aerial 7, ultrashort wave (USW) monitoring aerial A, the signal output part of ultrashort wave (USW) monitoring aerial B respectively with corresponding joining of secondary signal input end of RF amplifier module B, microwave monitoring aerial A, the signal output part of microwave monitoring aerial B respectively with corresponding joining of input end of RF amplifier module C, corresponding the joining of second input end of the output terminal of RF amplifier module B and monitoring receiver A, corresponding the joining of signal input part of the output terminal of RF amplifier module C and monitoring receiver B, the 3rd signal I/O end of computer system 6 and corresponding the joining of signal output/input end of monitoring receiver A, the 4th signal I/O end of computer system 6 and corresponding the joining of signal output/input end of monitoring receiver B, corresponding the joining of signal input part of first signal output part of computer system 6 and headstock azimuth indicator 19, corresponding the joining of signal input part of the secondary signal output terminal of computer system 6 and printer 22, corresponding the joining of signal output part of first signal input part of computer system 6 and GPS, corresponding the joining of signal output part of the secondary signal input end of computer system 6 and electronic compass 21, computer system 6 is joined with hub.
Described vertical polarization is passive/active direction estimation antenna array 1, and be divided into and two-layerly arrange along short transverse, be divided into three service bands.The AB wave band has been arranged by lower floor, and ((800MHz～1600MHz) forms circular array by the summit that five dipoles (Φ 16mm) vertically are placed on a regular pentagon respectively for 20MHz～800MHz) and C-band.The AB wave band is active (each antenna has a balanced amplifier) direction-finder antenna array, and 1 meter of diameter, unit dipole are about 0.2 meter; C-band is the passive direction finding aerial array, 0.5 meter of diameter, and the unit dipole length dwindles to some extent.The upper strata is that (the unit dipole length further dwindles the D wave band for 1600MHz～3000MHz), also be the passive direction finding aerial array, about 0.3 meter of diameter.Skin is coated with antenna house, entire antenna battle array high about 0.5 meter (containing antenna house), and impedance is 50 Ω, interface is a N type socket.
Described electricity is outwarded winding and is closed unit 2.It is subjected to the control and the power supply of monitoring and direction-finding processing module 5.Working frequency range is 20～3000MHz, and inside has the SW-15/5-M electricity to outward winding to close and the SPL-1/5 power divider.It is equivalent to a high frequency electronic switch, and 15 signal input parts, 5 signal output parts, 1 control/power supply port, 1 self-correcting signal input part are arranged, its controlled 5 tunnel signalling channels and self-correcting signalling channel of getting through certain frequency range simultaneously.Self-correcting signal from receiver (or external) is divided into 5 the tunnel behind the SPL-1/5 power divider, be used for the system of 20～800MHz frequency range or 800～1600MHz frequency range or the work of 1600～3000MHz frequency range is carried out self-correcting.Its principle of work: when control voltage V1, V2 power up, during diode D1～D3 conducting, signal from antenna 1 just can pass to node A, when control voltage V2, V3 power up, during diode D4～D6 conducting, the self-correcting signal just can pass to node A, when control voltage V4, V5 power up, during diode D7～D9 conducting, the signal of node A just can be exported from main road; When control voltage V6, V7 power up, during diode D10～D12 conducting, the signal of node A just can be exported from auxiliary route.As shown in Figure 2.
RF amplifier module 3, frequency of operation is 20～3000MHz, has amplification, straight-through, three kinds of functions of decay, in use according to actual needs by software set.By 5 independently low noise amplifier form, 5 road signals that close unit 2 respectively to outwarding winding from electricity are handled.They respectively have 1 control/feeder ear, 1 input end, 1 output terminal.The principle of work of three function amplifiers: it is made up of first high frequency relay, the second high frequency relay B, amplifying circuit, attenuator circuit and power supply.The model of high frequency relay is RF303-12, and the amplifier tube model in the amplifier is ERA-51SM.+ 12V power supply is added to respectively on first high frequency relay and second high frequency relay by software control.When first high frequency relay powers up, and second high frequency relay is not when powering up, and input signal obtains linear amplification behind amplifying circuit, again through the straight-through part output of second high frequency relay.Be " amplification ".When first high frequency relay does not power up, and second high frequency relay is when powering up, and input signal arrives the attenuator circuit of high frequency relay after the straight-through part of first high frequency relay, output after decaying.Be " decay ".When first high frequency relay and second high frequency relay did not power up, input signal was through the straight-through part output of first high frequency relay and second high frequency relay.Be " leading directly to ".So this amplifier has " lead directly to, amplify, decay " three functions.
Five channel direction-finding receivers 4, the received on-air radio electric signal of direction-finder antenna is carried out frequency conversion, sampling, demodulation, decoding and A/D conversion etc., output comprises the analog or digital intermediate-freuqncy signal of information such as signal frequency, amplitude, frequency deviation, percentage modulation bandwidth, level, delivers to computer system 6 (ADVANTECHIPC-610) again and handles.Select the digital five channel direction-finding receivers of J067 of Jiujiang City, Jiangxi Province 713 factories in the present embodiment for use, carry out the space spectrum estimation ultra-resolution rate direction finding of five channels.It is made up of five plate card type receivers, adopts pci bus structure and modular design, and an integrated circuit board is exactly a receive channel, integrated circuit board be inserted in the PCI slot 19 " in the standard PC case, fix with press strip.During the system direction finding, five channel receivers are worked simultaneously, shared same local vibration source, and phase equalization is good, has guaranteed the high precision of space spectrum estimation ultra-resolution rate direction-finding system.
Monitoring and direction-finding processing module 5 (model is DFC050L) is system's each several part control drive unit and dc power supply unit.Processing module is accepted the steering order of computer system by parallel port and computer system communication, implements the control to relevant unit.As: the control to electricity is outwarded winding unit, pass, RF three function amplifier modules, five channel direction-finding receivers, monitoring receiver etc. makes system monitor and direction finding radio signal according to software program.
Computer system 6 is industrial control computer (ADVANTECH IPC-610), it has, and travelling speed is fast, capacity is big, reliable and stable, can expand, characteristics such as anti-seismic performance is good.It is as the carrier of application software, except executive routine (comprise storage, print), also lot of data, audio frequency, video etc. are handled, it is by handling the mass data information that receives from bay, adopt advanced statistic algorithm---multiple signal classification (MUSIC) algorithm, thereby draw the orientation of signal.In the direction finding of space spectrum estimation ultra-resolution rate, measure the signal voltage that institute might bay receives, production measurement covariance matrix R, this matrix is used for differentiating the cochannel component of received signal.The process of MUSIC algorithm is to calculate covariance matrix R earlier, R is carried out feature decomposition obtain its eigenwert and proper vector.Can determine the quantity of signal source according to eigenwert, utilize the signal subspace formed by proper vector and the orthogonality relation of noise subspace, two sub spaces are carried out suitable processing, determine the arrival bearing of radio signal.Super-resolution direction-finding uses the interpolation orientation values to calculate a plurality of position angles, and this value generates according to the bearing calibration vector that the signal subspace with measurement covariance matrix R production mates most.
Medium short wave monitoring aerial 7 is active monopole monitoring aerial, and operating frequency range is 100KHz～30MHz, and impedance 50 Ω, interface are N type socket.
Ultrashort wave (USW) monitoring aerial 8 is active monopole monitoring aerial, and operating frequency range is 30MHz～300MHz, and impedance 50 Ω, interface are N type socket.
Ultrashort wave (USW) monitoring aerial 9, model are ANT-BC-105, and operating frequency range is 300MHz～3000MHz, are vertical active bipyramid omnidirectional antenna that place, non-directional in surface level, one-tenth splayed lobe directions figure in vertical plane.About 0.4 meter of diameter, high 0.4 meter, general assembly (TW) is less than 4Kg, and impedance 50 Ω, interface are N type socket.
Microwave monitoring aerial 10, model are WANT004R, and operating frequency range is 3GHz-18GHz, and circular polarisation is of a size of Φ 165mm * 200mm, and gaining is 2dB, VSWR＜3.Impedance is 50 Ω, and interface is a N type socket.
Microwave monitoring aerial 11, model are WANT005R, and operating frequency range is 18GHz-40GHz, and circular polarisation is of a size of Φ 155mm * 180mm, and gaining is 2dB, VSWR＜3.Impedance is 50 Ω, and interface is a N type socket.
RF amplifier module 12, operating frequency range is 100KHz～3000MHz, has amplification, straight-through, three kinds of functions of decay, in use according to actual needs by software set.By 3 independently low noise amplifier form, respectively to handling from 3 road signals of medium short wave monitoring aerial and ultrashort wave (USW) monitoring aerial.They respectively have 1 control/feeder ear, 1 input end, 1 output terminal.The existing narration in its principle of work front is omited here.
RF amplifier module 13, operating frequency range are 3GHz～40GHz, by 2 independently low noise amplifier form, respectively to ((2 road signals of 18GHz～40GHz) are handled for 3GHz～18GHz) and microwave monitoring aerial from the microwave monitoring aerial.They respectively have 1 control/feeder ear, 1 input end, 1 output terminal.Its principle of work is the same.
Monitoring receiver 14, the received on-air radio electric signal of monitoring aerial is carried out frequency conversion, sampling, demodulation, decoding and A/D conversion etc., output comprises the analog or digital intermediate-freuqncy signal of information such as signal frequency, amplitude, frequency deviation, percentage modulation bandwidth, level, delivers to computer system 6 (ADVANTECHIPC-610) again and handles.Select the digital monitoring receiver of J066 of Jiujiang City, Jiangxi Province 713 factories in the present embodiment for use.
Monitoring receiver 15, the MS2661C spectrum analyzer of selecting for use Japanese Anritsu company to produce.
Electric battery or civil power 16 comprise civil power 220VAC and battery pack (4 joint 12V100AH).
UPS 17, are uninterrupted power source, and model is that APC1000VA is online.
Inverter 18, model are S1500-212.Be to carry car engine 12V direct current more than needed to be converted into the 220V alternating current, behind UPS, power to system.
Headstock azimuth indicator 19 is the aspect that shows in real time on LCDs with respect to headstock, so that the driver in time grasps the direction that signal occurs, facilitates for searching signal fast.It connects with computing machine by serial ports.
GPS, i.e. GPS (Global Positioning System), it is made up of Aerospace Satellite, ground monitoring and subscriber equipment three parts, is widely used in all kinds of navigation positioning systems.The GPS receiver is an equipment that receives gps satellite signal and calculate the present position coordinate in real time.GPS is used for the mobile monitoring station, and its purposes is to determine the geographic position of locomotive (warp, latitude) at any time, and data are offered computing machine.On electronic chart, show current location in real time, simultaneously for showing that direction-finding bearing and cross bearing provide data.Native system adopts GPS12XL (jaguar) the GPS receiver of U.S. GARMIN company.GPS12XL adopts parallel 12 passages to receive system, and is highly sensitive.
Electronic compass 21 is for the mobile monitoring station provides real-time reference azimuth data, and gives computing machine data transmission.Native system adopts the C100 type electronic compass of U.S. KVH company.
Printer 22 is the IP90V of Japanese CANON company.
Claims (7)
1, Wide-band 5-channel radio monitoring and super-resolution direction-finding mobile station equipment, it is characterized in that vertical polarization passive/signal output part of active direction estimation antenna array connects electricity and outwards winding and close first signal input part of unit, the outward winding signal output part that closes the unit of electricity connects first signal input part of RF amplifier module A, the signal output part of RF amplifier module A connects first signal input part of five channel direction-finding receivers, first corresponding the joining of signal I/O end of the signal output/input end of five channel direction-finding receivers and computer system, the secondary signal I/O end of computer system and corresponding the joining of signal output/input end of monitoring and direction-finding processing module, corresponding the joining of first signal input part of first signal output part of monitoring and direction-finding processing module and monitoring receiver A, corresponding the joining of first signal input part of the secondary signal output terminal of monitoring and direction-finding processing module and RF amplifier module B, the 3rd signal output part of monitoring and direction-finding processing module is passive with vertical polarization/corresponding joining of signal input part of active direction estimation antenna array, the 4th signal output part of monitoring and direction-finding processing module is outwarded winding with electricity and is closed corresponding the joining of secondary signal input end of unit, corresponding the joining of secondary signal input end of the 5th signal output part of monitoring and direction-finding processing module and RF amplifier module A, corresponding the joining of secondary signal input end of the 6th signal output part of monitoring and direction-finding processing module and five channel direction-finding receivers, the medium short wave monitoring aerial, ultrashort wave (USW) monitoring aerial A, the signal output part of ultrashort wave (USW) monitoring aerial B respectively with corresponding joining of secondary signal input end of RF amplifier module B, microwave monitoring aerial A, the signal output part of microwave monitoring aerial B respectively with corresponding joining of input end of RF amplifier module C, corresponding the joining of second input end of the output terminal of RF amplifier module B and monitoring receiver A, corresponding the joining of signal input part of the output terminal of RF amplifier module C and monitoring receiver B, the 3rd signal I/O end of computer system and corresponding the joining of signal output/input end of monitoring receiver A, the 4th signal I/O end of computer system and corresponding the joining of signal output/input end of monitoring receiver B, corresponding the joining of signal input part of first signal output part of computer system and headstock azimuth indicator, corresponding the joining of signal input part of the secondary signal output terminal of computer system and printer, corresponding the joining of signal output part of first signal input part of computer system and GPS, corresponding the joining of signal output part of the secondary signal input end of computer system and electronic compass, computer system and hub join.
2, Wide-band 5-channel radio monitoring according to claim 1 and super-resolution direction-finding mobile station equipment, it is characterized in that described vertical polarization passive/active direction estimation antenna array, be divided into and two-layerly arrange along short transverse, be divided into three service bands, AB wave band and C-band have been arranged by lower floor, working frequency range 20MHz～the 800MHz of AB wave band wherein, working frequency range 800MHz～the 1600MHz of C-band, by five dipoles, diameter 16mm vertically is placed on the summit of a regular pentagon and forms circular array respectively, and the AB wave band is active direction estimation antenna array, each antenna has a balanced amplifier, the direction-finder antenna array, 1 meter of diameter, long 0.2 meter of unit dipole; C-band is the passive direction finding aerial array, 0.5 meter of diameter; The upper strata is the D wave band, and working frequency range 1600MHz～3000MHz is the passive direction finding aerial array, 0.3 meter of diameter; Skin is coated with antenna house, and the entire antenna battle array is high 0.5 meter, and impedance is 50 Ω, and interface is a N type socket.
3, Wide-band 5-channel radio monitoring according to claim 1 and super-resolution direction-finding mobile station equipment, it is characterized in that described electricity is outwarded winding closes control and the power supply that the unit is subjected to the monitoring and direction-finding processing module, working frequency range is 20～3000MHz, inside has the SW-15/5-M electricity to outward winding to close and the SPL-1/5 power divider, be equivalent to a high frequency electronic switch, 15 signal input parts, 5 signal output parts, 1 control/power supply port, 1 self-correcting signal input part are arranged.
4, Wide-band 5-channel radio monitoring according to claim 1 and super-resolution direction-finding mobile station equipment, it is characterized in that described RF amplifier module A, frequency of operation is 20～3000MHz, by 5 independently low noise amplifier form, 1 control/feeder ear, 1 input end, 1 output terminal are respectively arranged.
5, Wide-band 5-channel radio monitoring according to claim 1 and super-resolution direction-finding mobile station equipment, it is characterized in that described medium short wave monitoring aerial, be active monopole monitoring aerial, operating frequency range is 100KHz～30MHz, impedance 50 Ω, interface are N type socket.
6, Wide-band 5-channel radio monitoring according to claim 1 and super-resolution direction-finding mobile station equipment, it is characterized in that described ultrashort wave (USW) monitoring aerial, be active monopole monitoring aerial, operating frequency range is 30MHz～300MHz, impedance 50 Ω, interface are N type socket.
7, Wide-band 5-channel radio monitoring according to claim 1 and super-resolution direction-finding mobile station equipment, it is characterized in that described RF amplifier module B, operating frequency range is 100KHz～3000MHz, described RF amplifier module C, and operating frequency range is 3GHz～40GHz.
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| CNU2008201859192U CN201285421Y (en) | 2008-09-10 | 2008-09-10 | Broadband five channel radio monitoring and super-resolution direction-finding mobile station system |
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| CNU2008201859192U CN201285421Y (en) | 2008-09-10 | 2008-09-10 | Broadband five channel radio monitoring and super-resolution direction-finding mobile station system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969330A (en) * | 2010-10-18 | 2011-02-09 | 南京大学 | Software radio-based wide frequency range direction of arrival identifying equipment |
| CN104363063A (en) * | 2014-11-15 | 2015-02-18 | 成都九华圆通科技发展有限公司 | Vehicle-mounted radio monitoring direction-finding system |
| CN104486008A (en) * | 2014-12-10 | 2015-04-01 | 成都中星世通电子科技有限公司 | Radio-frequency measurement type radio monitoring device |
-
2008
- 2008-09-10 CN CNU2008201859192U patent/CN201285421Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969330A (en) * | 2010-10-18 | 2011-02-09 | 南京大学 | Software radio-based wide frequency range direction of arrival identifying equipment |
| CN104363063A (en) * | 2014-11-15 | 2015-02-18 | 成都九华圆通科技发展有限公司 | Vehicle-mounted radio monitoring direction-finding system |
| CN104486008A (en) * | 2014-12-10 | 2015-04-01 | 成都中星世通电子科技有限公司 | Radio-frequency measurement type radio monitoring device |
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| GR01 | Patent grant | ||
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Granted publication date: 20090805 Termination date: 20100910 |