CN1976250B - Movable single channel radio monitoring and related interference direction-finding system - Google Patents
Movable single channel radio monitoring and related interference direction-finding system Download PDFInfo
- Publication number
- CN1976250B CN1976250B CN2006100883024A CN200610088302A CN1976250B CN 1976250 B CN1976250 B CN 1976250B CN 2006100883024 A CN2006100883024 A CN 2006100883024A CN 200610088302 A CN200610088302 A CN 200610088302A CN 1976250 B CN1976250 B CN 1976250B
- Authority
- CN
- China
- Prior art keywords
- input
- monitoring
- output
- finding
- single channel
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
A radio monitoring and correlation interference direction-finding system of movable single channel comprises direction-finding array of movable vertical polarized correlation interferometer, electric screw switch at low and high sides, antenna selector, three-function RF amplifier, radio frequency preprocessor, direction-finding receiver of single channel monitoring, controller of monitoring direction-finding, industrial control computer, monitoring antenna of high and low sides, GPS, electronic compass, UPS, environmental monitoring power source unit and concentrator.
Description
Technical field
What the present invention relates to is to move single channel wireless pyroelectric monitor and correlation interference direction-finding system, belongs to the array signal digital processing direction finding technology field in the communication technology.
Background technology
For fill up departments such as state security department, army, radio control quick and precisely and maneuverability ground carry out the blank of radio monitoring task, the moved station of compiling the advantage at fixing and mobile monitoring station becomes active demand.And along with can moving the constantly perfect of technology such as the active direction estimation antenna array of formula, the accurate correlation interferometer direction-finding of single channel, radio frequency preliminary treatment, make and can move the single channel wireless pyroelectric monitor and the correlation interference direction-finding system becomes possibility.
Summary of the invention
The objective of the invention is to propose to move single channel wireless pyroelectric monitor and correlation interference direction-finding system.Propose to adopt a kind of single channel monitoring and direction-finding receiver, cooperate the radio frequency preprocessor, can move the active direction estimation antenna array of formula, monitoring aerial, software radio and DSP technology, small-signal extracts and white noise disappears mutually technology, on single channel correlation interferometer direction-finding system, realize the radio signal of vertically polarized wave is monitored monitoring, direction finding location, but and monitoring and direction finding timesharing are carried out.
Technical solution of the present invention, it is characterized in that to move the output of perpendicular polarization correlation interferometer direction-finding antenna array with high, the low side electricity first input end that closes of outwarding winding joins, high, the low side electricity outward winding close first, second, the 3rd, first of the 4th output and first antenna selector, second, the 3rd, the four-input terminal correspondence is joined, first of first antenna selector, first of second output and three function RF amplifiers, the second input correspondence is joined, first of three function RF amplifiers, first of second output and radio frequency preprocessor, the second input correspondence is joined, and the first input end of the output of radio frequency preprocessor and single channel monitoring and direction-finding receiver joins; The first, second, third, fourth, the 5th, the 6th output of monitoring and direction-finding controller is outwarded winding second input that closes, the 5th input of first antenna selector, the 3rd input of three function RF amplifiers, the 3rd input of radio frequency preprocessor, second input of single channel monitoring and direction-finding receiver, corresponding the joining of the 3rd input of second antenna selector with high and low end electricity respectively; First, second, third of industrial control computer exports/go into end respectively with the input of the input of single channel monitoring and direction-finding receiver/go out end, monitoring and direction-finding controller/go out first of end, hub to import/go out to hold corresponding joining; The output of end and environmental monitoring and remote circuit unit/go into to hold corresponding joining is imported/gone out to second of hub, the first input end of the output termination industrial control computer of environmental monitoring and remote circuit unit, first output of the input termination UPS of environmental monitoring and remote circuit unit, second input of the second output termination industrial control computer of UPS, the output of GPS, electronic compass connect respectively industrial control computer the 3rd, four-input terminal; The output termination printer of industrial control computer; Corresponding the joining of first, second input of the output of low side perpendicular polarization monitoring aerial, high-end perpendicular polarization monitoring aerial and second antenna selector; The four-input terminal of the output termination radio frequency preprocessor of second antenna selector.
Advantage of the present invention: adopt single channel correlation interferometer direction-finding system, a pair of antenna element is sampled simultaneously, guarantees synchronous, quick, accurate.Employing can be moved the active direction estimation antenna array in formula Unit nine, has solved the mutual coupling problem between each bay well, has got rid of coupling and phase ambiguity between element antenna.Adopted the radio frequency preprocessor, radiofrequency signal has been carried out phase/amplitude/phase transition and storage.Adopted the wideband low noise amplifier technology, had the amplifier of amplification, straight-through, three kinds of functions of decay, can automatically switch, enlarged the dynamic application scope of received signal, particularly when receiving strong signal, be not easy to produce obstruction because of signal is saturated.Can compatible multiple single channel monitoring and direction-finding receiver, monitoring and the timesharing of direction finding energy are carried out.Little in light weight, the maneuverability of system bulk, move conveniently.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention electricity theory diagram.
Accompanying drawing 2 is that high and low end electricity is outwarded winding and closed electric theory diagram (outward winding with one group of electricity to close be example).
Accompanying drawing 3 is three function RF amplifiers electricity theory diagrams
Accompanying drawing 4 is that power divider is the structured flowchart of example with the 1:2 distributor.
Accompanying drawing 5 is structured flowcharts of environmental monitoring and remote circuit unit.
Accompanying drawing 6 is to move used direction estimation antenna array in the perpendicular polarization single channel wireless pyroelectric monitor direction-finding system of station:
Accompanying drawing 7 is software control system flow charts of the present invention.
Among the figure 1 can move perpendicular polarization correlation interferometer direction-finding antenna array, the 2nd, high, the low side electricity pass of outwarding winding, 3 is first antenna selectors, 4 is three function RF amplifiers, the 5th, the radio frequency preprocessor, the 6th, single channel monitoring and direction-finding receiver, the 7th, the monitoring and direction-finding controller, the 8th, industrial control computer, the 9th, low side perpendicular polarization monitoring aerial, the 10th, high-end perpendicular polarization monitoring aerial, 11 is second antenna selectors, the 12nd, GPS, the 13rd, electronic compass, the 14th, printer, the 15th, battery pack or civil power, the 16th, UPS, the 17th, environmental monitoring and remote circuit unit, the 18th, hub.The 19th, lightning rod, 20 is that the active direction estimation antenna array of nine unit perpendicular polarizations: 1000MHz-3000MHz, 21 is the active direction estimation antenna array of nine unit perpendicular polarizations: 20MHz-1000MHz, R
1, R
2, R
3Be resistance, C
1, C
2, C
3Be electric capacity, D
1-12Be that diode, V1-V7 are the voltage of monitoring and direction-finding controller output; The flow chart of software control system comprises monitoring and direction-finding service routine (dfNetServer) direction finding flow process and monitoring and direction-finding service routine (dfNetServer) operational process.
Embodiment
Contrast accompanying drawing 1, its structure is can move the output of perpendicular polarization correlation interferometer direction-finding antenna array 1 with high, the low side electricity is outwarded winding and is closed 2 first input end and join, high, the low side electricity outward winding close 2 first, second, the 3rd, first of the 4th output and first antenna selector 3, second, the 3rd, the four-input terminal correspondence is joined, first of first antenna selector 3, first of second output and three function RF amplifiers 4, the second input correspondence is joined, first of three function RF amplifiers 4, first of second output and radio frequency preprocessor 5, the second input correspondence is joined, and the first input end of the output of radio frequency preprocessor 5 and single channel monitoring and direction-finding receiver 6 joins; The first, second, third, fourth, the 5th, the 6th output of monitoring and direction-finding controller 7 is outwarded winding with high and low end electricity respectively and is closed 2 second input, the 5th input of first antenna selector 3, the 3rd input of three function RF amplifiers 4, the 3rd input of radio frequency preprocessor 5, second input of single channel monitoring and direction-finding receiver 6, corresponding the joining of the 3rd input of second antenna selector 11; First, second, third of industrial control computer 8 exports/go into end respectively with the input of the input of single channel monitoring and direction-finding receiver 6/go out end, monitoring and direction-finding controller 7/go out first of end, hub 18 to import/go out to hold corresponding joining; The output of end and environmental monitoring and remote circuit unit 17/go into to hold corresponding joining is imported/gone out to second of hub 18, the first input end of the output termination industrial control computer 8 of environmental monitoring and remote circuit unit 17, first output of the input termination UPS 16 of environmental monitoring and remote circuit unit 17, second input of the second output termination industrial control computer 8 of UPS 16, the output of GPS 12, electronic compass 13 connect respectively industrial control computer 8 the 3rd, four-input terminal; The output termination printer 14 of industrial control computer 8; The output of low side perpendicular polarization monitoring aerial 9, high-end perpendicular polarization monitoring aerial 10 joins with first, second input of second antenna selector 11 respectively; The four-input terminal of the output termination radio frequency preprocessor 5 of second antenna selector 11.
The described perpendicular polarization correlation interferometer direction-finding antenna array 1 of moving is divided into two-layer arrangement (corresponding two frequency ranges), arranges along short transverse.Lower floor's antenna array is made up of the active vertical dipole antenna in Unit nine (diameter 16mm), and working frequency range is 20MHz～1000MHz, and the array diameter is 1200mm, and the unit dipole length is 270mm; The upper strata antenna array is made up of the active vertical dipole antenna in Unit nine (diameter 17mm), and working frequency range is 1000MHz～3000MHz, and the array diameter is 400mm, and the unit dipole length is 125mm.Lightning rod (long 775mm) is installed topmost, the antenna total height is 1550mm, and impedance is 50 Ω, and interface is a N type socket.
High and low end electricity is outwarded winding and is closed 2 and be divided into the low side electricity according to frequency range and outward winding and close unit and the high-end electricity unit, pass of outwarding winding.It is subjected to the control and the power supply of monitoring and direction-finding controller.Its low and middle-end electricity operating frequency of closing the unit of outwarding winding is 20MHz～1000MHz, and inside comprises that ANS 021L low side electricity is outwarded winding and closes and ALL 052L 1:2+1:9 power divider.It is equivalent to a high frequency electronic switch, it has 9 signal input parts, 2 signal output parts, 1 control/power supply port, 1 self-correcting signal input part and 1 self-correcting signal output part, its controlled certain two paths of signals passage (being divided into main road, bypass) and self-correcting signalling channel of getting through simultaneously.ALL 052L power divider is that the self-correcting signal is divided into two-way earlier, and wherein one the tunnel is divided into 9 the tunnel again, introduces the low side electricity pass of outwarding winding, and is used for the system of 20MHz～1000MHz frequency range work is carried out self-correcting; Another road self-correcting signal is sent to high-end electricity and revolves in the switch enclosure, again behind the 1:9 power divider, delivers to high-frequency electrical and outwards winding and close the self-correcting that the unit is used for the high band system.The high-end electricity operating frequency of closing the unit of outwarding winding is 1000MHz～3000MHz, and inside comprises that the high-end electricity of ANS 020L is outwarded winding and closes and ALL 053L 1:9 power divider.It also is a high frequency electronic switch, and it has 9 signal input parts, 2 signal output parts, 1 control/power supply port, 1 self-correcting signal input part, its controlled certain two paths of signals passage (being divided into main road, bypass) and self-correcting signalling channel of getting through simultaneously.Its operation principle: when control voltage V1, V2 power up, during diode D1-3 conducting, just can pass to node A, when control voltage V2, V3 power up diode D from the signal that can move perpendicular polarization correlation interferometer direction-finding antenna array 1
4-6During conducting, the self-correcting signal just can pass to node A, when control voltage V4, V5 power up diode D
7-9During conducting, the signal of node A just can be exported from main road; When control voltage V6, V7 power up diode D
10-12During conducting, the signal of node A just can be exported (as shown in Figure 2) from auxiliary route;
First antenna selector 3 is 4:2 selectors, is used for closing outwarding winding from high-end electricity and the outward winding major-minor signal of 2 couple that closes output of low side electricity is chosen 1 pair of major-minor signal and exported.It has 4 inputs, 2 outputs and 1 control/feeder ear.
Three function RF amplifiers 4 comprise two broadband low noise amplifiers, and operating frequency is 20MHz～3000MHz, have amplification, straight-through, three kinds of functions of decay, in use according to actual needs by software set.Respectively the main and auxiliary road signal from first antenna selector is handled.They respectively have 1 control/feeder ear, 1 input, 1 output.Amplifier is made up of first high frequency relay, second high frequency relay, amplifying circuit, attenuator circuit and power supply, the amplifier tube (model ERA-51SM) in high frequency relay (model RF303-12), the amplifier.+ 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 the second straight-through part output through 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 second 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.
Radio frequency preprocessor 5 (model is RFP006) is the principle according to correlation interference direction-finding, to carrying out a series of relevant preliminary treatment from the direction-finder antenna main and side road signal of three function amplifiers 4, the monitoring aerial signal of second selector.Be divided into high-end and low side RF preprocessor, operating frequency is respectively 1000MHz～3000MHz and 20MHz～1000MHz.Parts such as, HF switch synthetic comprising power division, phse conversion, signal, the phase information of signal is converted into amplitude information after, after suitable digital operation, be transformed into phase information again.Because twice variation of signal, generally this processing unit all is used with communication satellite.We have adopted Digital Signal Processing (DSP) technology and DSP device in a large number in native system, by Hilbert conversion and digital operation, detect the phase difference of coherent signal.For avoiding complicated time domain to handle, replace complicated integral operation with FFT and IFFT computing, realize digital Hilbert conversion, thereby improved arithmetic speed greatly, make direction finding speed bring up to present 20ms.
Single channel monitoring and direction-finding receiver 6 has monitoring and direction finding dual-use function.To handle frequency conversion, demodulation, decoding (can monitor measurement to the signal of different frequency domains, modulation domain, time domain) from monitoring (direction finding) signal of radio frequency preprocessor, output comprises the digital monitoring information of frequency, amplitude, frequency deviation, percentage modulation bandwidth, level, spectral image etc. and comprises signal phase and the digital direction-finding signal of amplitude characteristic.It is by serial ports and computer communication.Select the TSR 2040 single channel monitoring/direction-finding receivers of Israel Tadiran company in the present embodiment for use, carry out single channel monitoring and single channel correlation interferometer direction-finding.This receiver adopts pci bus structure and modularized design, a template is exactly a receive path, template can be inserted in the industrial computer that has the PCI slot, fixes with press strip up and down, constitutes the virtual instrument platform of state-of-the-art embedded receiver computer combined in the present age.
Monitoring and direction-finding controller 7 (model is DFC 050L) is system's each several part control drive unit and dc power supply unit.Processor is by serial port and industrial control computer 8 (ADVANTECHIPC-610) communication, accept the control command of computer, outward winding pass, first selector, three function RF amplifiers, radio frequency preprocessor, single channel monitoring and direction-finding receiver, second selector etc. of high low side electricity are controlled, system is monitored and direction finding radio signal according to software program.
Industrial control computer 8 (ADVANTECH IPC-610) is the carrier as application software, except executive program (comprise storage, print), also lot of data, audio frequency, video etc. are handled, it is by carrying out complicated statistic algorithm (as auto-correlation algorithm, phase detection algorithm, HILBERT conversion, fft algorithm) to the information data of a large amount of collections, thereby draws the orientation of signal.It has that the speed of service is fast, capacity is big, reliable and stable, can expand, characteristics such as anti-seismic performance is good.
Low side perpendicular polarization monitoring aerial 9 and high-end perpendicular polarization monitoring aerial 10 are the passive omnidirectional antenna of direction-free bipyramid in horizontal plane.The low side operating frequency is 20MHz～700MHz, is of a size of: diameter 1732mm; Height 1223mm.High-end operating frequency is 500MHz～3000MHz, is of a size of: diameter 250mm; Height 370mm.Antenna feed impedance: 50 Ω, the interface pattern is a N type socket.
Second antenna selector 11 is a kind of 2:1 selectors, and it is therefrom chosen No. 1 monitoring aerial signal and send into the radio frequency preprocessor selecting from the signal of low side perpendicular polarization monitoring aerial 9 and high-end perpendicular polarization monitoring aerial 10.It has 2 signal input parts, 1 signal output part, 1 control end.
GPS 12 is global positioning system (Global Positioning System), and 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 monitoring station, and its purposes is to determine the geographical position at this station (warp, latitude) at any time, and data are offered computer.On electronic chart, show current location in real time, simultaneously for showing that direction-finding bearing and cross bearing provide data.
Native system adopts GPS 12XL (jaguar) the GPS receiver of U.S. GARMIN company.GPS 12XL adopts parallel 12 passages to receive system, and is highly sensitive.
Electronic compass 13 is to provide real-time reference azimuth data for moving the station, and gives computer transfer of data.Native system adopts the C100 type electronic compass of U.S. KVH company.
Printer 14 is the BJC-85 of Japanese CANON company.
Battery pack or civil power 15 comprise civil power 220VAC and batteries (4 joint 12V100AH).
UPS 16 is a uninterrupted power supply, and model is that APC 1000VA is online.
Environmental monitoring and remote circuit unit 17, it (accepts control command to the system equipment power-on and power-off by the remote switch control module, computer resets, starting of air conditioner etc. are controlled), (AD that is used for on-the-spot 220VAC gathers data acquisition unit, fetch equipment power-on and power-off situation and voltage data etc.), (model is DS-6001HC to network video server, be used to transmit image scene), colour imagery shot (model is a Samsung 101), voltage sensor (model is DYH28-14A, is used for the 220V alternating current is converted into the alternating current of 5V), Temperature Humidity Sensor (model is JWSL-3W), smoke alarm (model is BT-168A), Infrared intrusion detector (model is BT-922R) etc. are partly formed.It links by NJ45 interface and hub, and hub joins with network again.Under control centre's software effect, can carry out straighforward operation to long-range fixed station, comprise switching on and shutting down, receive that control centre's instruction is monitored, monitored, recording, direction finding or the location that crosses, and will monitor monitoring direction finding result and pass back to control centre.In addition, operating state, equipment connection status, the ambient condition of distant station are monitored, and by transmission link with Monitoring Data such as environment, operating states with by camera the image of telemonitoring is delivered to control centre and monitor.To in time report to the police if any unusual (containing theft, fire alarm etc.).
Claims (1)
1. can move single channel wireless pyroelectric monitor and correlation interference direction-finding system, it is characterized in that comprising and to move perpendicular polarization correlation interferometer direction-finding antenna array (1), high, the low side electricity pass (2) of outwarding winding, first antenna selector (3), three function RF amplifiers (4), radio frequency preprocessor (5), single channel monitoring and direction-finding receiver (6), monitoring and direction-finding controller (7), industrial control computer (8), low side perpendicular polarization monitoring aerial (9), high-end perpendicular polarization monitoring aerial (10), second antenna selector (11), GPS (12), electronic compass (13), printer (14), UPS (16), environmental monitoring and remote circuit unit (17), hub (18); The output that wherein can move perpendicular polarization correlation interferometer direction-finding antenna array (1) is with high, the outward winding first input end of pass (2) of low side electricity joins, high, low side electricity first of the pass (2) of outwarding winding, second, the 3rd, first of the 4th output and first antenna selector (3), second, the 3rd, the four-input terminal correspondence is joined, first of first antenna selector (3), first of second output and three function RF amplifiers (4), the second input correspondence is joined, first of three function RF amplifiers (4), first of second output and radio frequency preprocessor (5), the second input correspondence is joined, and the first input end of the output of radio frequency preprocessor (5) and single channel monitoring and direction-finding receiver (6) joins; The first, second, third, fourth, the 5th, the 6th output of monitoring and direction-finding controller (7) is outwarded winding second input of pass (2), the 5th input of first antenna selector (3), the 3rd input of three function RF amplifiers (4), the 3rd input of radio frequency preprocessor (5), second input of single channel monitoring and direction-finding receiver (6), corresponding the joining of the 3rd input of second antenna selector (11) with high and low end electricity respectively; First, second, third of industrial control computer (8) exports/go into end respectively with the input of the input of single channel monitoring and direction-finding receiver (6)/go out end, monitoring and direction-finding controller (7)/go out first of end, hub (18) to import/go out to hold corresponding joining; The output of end and environmental monitoring and remote circuit unit (17)/go into to hold corresponding joining is imported/gone out to second of hub (18), the first input end of the output termination industrial control computer (8) of environmental monitoring and remote circuit unit (17), first output of the input termination UPS (16) of environmental monitoring and remote circuit unit (17), UPS (16) second output the termination industrial control computer (8) second input, the output of GPS (12), electronic compass (13) connect respectively industrial control computer (8) the 3rd, four-input terminal; The output termination printer (14) of industrial control computer (8); Corresponding the joining of first, second input of the output of low side perpendicular polarization monitoring aerial (9), high-end perpendicular polarization monitoring aerial (10) and second antenna selector (11); The four-input terminal of the output termination radio frequency preprocessor (5) of second antenna selector (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100883024A CN1976250B (en) | 2006-07-10 | 2006-07-10 | Movable single channel radio monitoring and related interference direction-finding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100883024A CN1976250B (en) | 2006-07-10 | 2006-07-10 | Movable single channel radio monitoring and related interference direction-finding system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1976250A CN1976250A (en) | 2007-06-06 |
| CN1976250B true CN1976250B (en) | 2011-05-25 |
Family
ID=38126078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100883024A Expired - Fee Related CN1976250B (en) | 2006-07-10 | 2006-07-10 | Movable single channel radio monitoring and related interference direction-finding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1976250B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061362B (en) * | 2019-05-29 | 2021-01-22 | 上海航天电子通讯设备研究所 | Active phased array antenna unit level internal monitoring device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471194A (en) * | 2003-07-02 | 2004-01-28 | 中国电子科技集团公司第五十四研究所 | Folding direction-finding communication line antenna apparatus |
| CN200966059Y (en) * | 2006-07-10 | 2007-10-24 | 俞文蕴 | Movable single channel radio surveillance and correlation interference direction finding device |
-
2006
- 2006-07-10 CN CN2006100883024A patent/CN1976250B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471194A (en) * | 2003-07-02 | 2004-01-28 | 中国电子科技集团公司第五十四研究所 | Folding direction-finding communication line antenna apparatus |
| CN200966059Y (en) * | 2006-07-10 | 2007-10-24 | 俞文蕴 | Movable single channel radio surveillance and correlation interference direction finding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1976250A (en) | 2007-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1877357B (en) | Superwide frequency band radio communication monitoring and direction finding system | |
| CN101363889B (en) | Small-sized embedded radio monitoring and direction-finding station system | |
| CN200966059Y (en) | Movable single channel radio surveillance and correlation interference direction finding device | |
| CN101363887A (en) | Unmanned helicopter-mounted aerial frequency spectrum monitoring system | |
| CN101363891A (en) | Wide-band 5-channel radio monitoring and super-resolution direction-finding mobile station system | |
| CN1976250B (en) | Movable single channel radio monitoring and related interference direction-finding system | |
| CN102075266B (en) | Nine-channel spatial spectrum estimation super-resolution monitoring direction-finding fixed station system | |
| CN100396141C (en) | Dual-channel radio monitoring and correlation interference direction-finding fixed station system | |
| CN101363890B (en) | Dual polarization 5-channel radio monitoring and super-resolution direction-finding fixation station system | |
| CN201285420Y (en) | Bi-polarized five channel radio monitoring and super-resolution direction-finding fixed station system | |
| CN100396140C (en) | Multi-channel radio monitoring and correlation interference direction-finding fixed station system | |
| CN200965569Y (en) | Movable double channel radio monitoring and correlation interference direction measuring device | |
| CN100387086C (en) | Multi-channel radio monitoring and correlation interference direction-finding mobile station system | |
| CN200947662Y (en) | Dual channel radio monitoring and coherent interference direction station equipments | |
| CN200959643Y (en) | Multi-channel wireless monitor and related interferent direction-finding fixed station apparatus | |
| CN200962590Y (en) | Monitoring and direction measurement device of ultra-broad frequency band radio communication and radar signal | |
| CN203313196U (en) | Radio monitoring system suitable for portable radio monitoring integrated machine having receiving terminal | |
| CN100387087C (en) | Dual-channel radio monitoring and correlation interference direction-finding mobile station system | |
| CN1988409A (en) | Movable double channel radio monitoring and relative interference direction testing system | |
| CN202583464U (en) | Double positioning control device based on both GPS and base station | |
| CN200956587Y (en) | Vertical polarized single channel radio monitoring and related interference direction-finding fixed station device | |
| CN101363888A (en) | Shipborne maritime wireless communication monitoring system | |
| CN201285419Y (en) | Small-sized embedded radio monitoring and direction-finding station system | |
| CN200966055Y (en) | Double channel radio surveillance and correlation interference direction finding mobile station equipment | |
| CN100514881C (en) | Vertical polarized single channel radio monitoring and correlation interference direction-finding fixed station system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20130710 |