CN1885738A - Dual-polarized multi-channel digital radio monitoring and correlation interferometer direction-finding mobile station - Google Patents
Dual-polarized multi-channel digital radio monitoring and correlation interferometer direction-finding mobile station Download PDFInfo
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Abstract
The related dual-polarized multi-channel digital radio monitor and interferometer direction- finding mobile station system comprises: a direction-finding antenna for vertical/horizontal polarized interferometer, a vertical/horizontal polarized monitor antenna, two electric switch units, a RF amplifiers, three selectors, two three-functional RF amplifiers, a three-channel receiver, a PC, a processor, a self-correction signal generator, a router, a position indicator, a GPS, an electron compass, a inversion power, a printer, and the network. This invention has well sensitivity and fast speed, and fit to wide application, such as FFT digital monitor.
Description
Technical field
What the present invention relates to is dual-polarized multi-channel digital radio monitoring and correlation interferometer direction-finding mobile station system, belongs to the array signal digital processing direction finding technology field in the communication technology.
Background technology
At present like product has the DDF05E system of French Esmeralda three-channel system and German R/S company.Yet they all are the system of perpendicular polarization; And there is not dual polarization system.And cost an arm and a leg.Can only no longer can satisfy the demand of digital communication signal monitoring to the equipment that analog communication signal is monitored.
Summary of the invention
The objective of the invention is to propose a kind of dual-polarized multi-channel digital radio monitoring and correlation interferometer direction-finding mobile station system.Adopt three (more) channel digitals monitoring receiver (combination of a single channel monitoring receiver and a double-channel monitoring/direction-finding receiver), added dual polarization monitoring aerial system, computer, digital monitoring processor etc., formed the relatively independent digitlization dual polarization monitoring system of a cover; Utilize wherein double-channel monitoring/direction-finding receiver simultaneously, add dual polarization DF antenna system, computer, digital direction finding processor etc., can form relatively independent digital dual polarization double-channel correlation interferometer direction-finding system.In a mobile radio station, this two cover system can be independently, synchronous operation, also can merge operation, carries out the work of dual polarization monitoring and dual polarization direction finding simultaneously.
Technical solution of the present invention: its structure mainly comprises perpendicular polarization interferometer direction finding antenna, horizontal polarization interferometer direction finding antenna, perpendicular polarization monitoring aerial, horizontal polarization monitoring aerial, and two electricity are outwarded winding and closed unit, RF amplifier, three selectors, two three function RF amplifiers, three channel receivers, PC, monitoring and direction-finding processor, self-correcting signal generator, router, headstock azimuth indicator, GPS, electronic compass, inverter, printer, network etc.
Advantage of the present invention: a pair of antenna element is sampled simultaneously, guarantee synchronously, fast, accurately, antijamming capability is strong.Adopt composite active dual polarization double-channel direction estimation antenna array, in the first combination of same set of direction estimation antenna array, contain perpendicular polarization double-channel direction estimation antenna array and horizontal polarization double-channel direction estimation antenna array simultaneously, and solved the mutual coupling problem between each bay well.Have amplification, straight-through, three kinds of functions of decay, 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.Adopted software radio and Digital Signal Processing (DSP) technology, demodulating and decoding technology, strengthened to the monitoring of digital signal with to the signature analysis of digital signal, as broadband real-time FFT digital monitoring etc.When not carrying out direction finding, can change multi channel monitoring and the signal analysis of carrying out different frequency domains, time domain, modulation domain simultaneously immediately over to, used investment resources fullest.The system accuracy height, sensitivity is good, speed is fast, stable performance, reliability height.The monitoring of its broadcast television signal and double-channel correlation interferometer direction-finding system meet in the ITU of the International Telecommunication Association proposed standard monitoring to broadcast television signal and require related request with national radio and television departments.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention electricity theory diagram.
Accompanying drawing 2 is three function RF amplifiers electricity theory diagrams.
Accompanying drawing 3 is self-correcting signal generator electricity theory diagrams.
Accompanying drawing 4 is that high and low end electricity is outwarded winding and closed electric principle schematic (outward winding with one group of electricity to close be example).
Accompanying drawing 5 is power dividers with 1: 2 distributor structured flowchart that is example.
Accompanying drawing 6 is direction estimation antenna array schematic diagrames used in dual-polarized multi-channel radio monitoring and the correlation interferometer direction-finding mobile station system.
Accompanying drawing 7 is flow charts of software control system.
A among the figure is a perpendicular polarization interferometer direction finding antenna array, B is a horizontal polarization interferometer direction finding antenna array, C is the perpendicular polarization monitoring aerial, D is the horizontal polarization monitoring aerial, 1 is first electricity unit, pass of outwarding winding, 2 is second electricity unit, pass of outwarding winding, the 3rd, first selector, the 4th, the self-correcting signal generator, the 5th, first three function RF amplifier, 6 is second three function RF amplifiers, the 7th, third selector, 8 is three channel receivers, the 9th, PC, the 10th, the monitoring and direction-finding processor, the 11st, second selector, the 12nd, first RF amplifier, 13 is n RF amplifiers, the 14th, router, the 15th, storage battery, the 16th, the headstock azimuth indicator, the 17th, printer, the 18th, electronic compass, the 19th, GPS.20 is that the active direction estimation antenna array of five unit horizontal polarised annular: 20MHz-1000MHz, 21 is the active direction estimation antenna array of five unit perpendicular polarizations: 1000MHz-3000MHz, the 22nd, radome, 23 are the active direction estimation antenna array of five 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, its structure comprise mainly that perpendicular polarization interferometer direction finding antenna array A, horizontal polarization interferometer direction finding antenna array B, perpendicular polarization monitoring aerial C, horizontal polarization monitoring aerial D, first electricity are outwarded winding and close unit 1, second electricity and outward winding and close unit 2, first selector 3, self-correcting signal generator 4, first three function RF amplifier 5, second three function RF amplifier 6, third selector 7, three channel receivers 8, PC 9, monitoring and direction-finding processor 10, second selector 11, first RF amplifier 12, a n RF amplifier 13, router one 4.Annexation between them:
The signal that perpendicular polarization interferometer direction finding antenna array A, horizontal polarization interferometer direction finding antenna array B, perpendicular polarization monitoring aerial C, horizontal polarization monitoring aerial D receive antenna outward winding with first electricity respectively close unit 1, second electricity is outwarded winding and is closed corresponding the joining of first input end of unit 2, first RF amplifier 12, a n RF amplifier 13; First electricity is outwarded winding and is closed corresponding respectively first, second, third, fourth input that inserts first selector 3 of first, second output that unit 1 and second electricity are outwarded winding and closed unit 2; Corresponding the joining of first, second input of the signal output part of first RF amplifier 12 and n RF amplifier 13 and second selector 11; The first input end of first output of first selector 3 and first three function RF amplifier 5 joins, and the first input end of second output of first selector 3 and second three function RF amplifier 6 joins; The output of first three function RF amplifier 5 and the first input end of third selector 7 join, the output of second three function RF amplifier 6 and second input of third selector 7 join, and the 3rd input of the output of second selector 11 and third selector 7 joins; Corresponding respectively first, second, third input that inserts three channel receivers 8 of three outputs of third selector 7; First output/input that end and PC 9 were imported/gone out to first of three channel receivers 8 joins, second of three channel receivers 8 imports/goes out end and monitoring and direction-finding processor 10 second and export/go into end and join, and first of monitoring and direction-finding processor 10 exported/gone into end and PC 9 second and import/go out end and join; The 3rd the output/input of PC 9 and the input of router/going out end joins; First output of monitoring and direction-finding processor 10 is outwarded winding with four-input terminal, second input of first three function RF amplifier 5, second input of second three function RF amplifier 6, the input of self-correcting signal generator 4, first electricity of third selector 7 respectively and is closed unit 1 and second electricity and outward winding that second input that closes unit 2 joins, the 5th input of first selector 3 joins; First electricity is outwarded winding and is closed outward winding the 3rd input of unit 2, pass of unit 1 the 3rd output and second electricity and join; Second output of monitoring and direction-finding processor 10 joins with second input of first RF amplifier 12 and second input of n RF amplifier 13 and the 3rd input of second selector 11 respectively; First, second output of PC 9 joins with the input of headstock azimuth indicator 16, printer 17 respectively, and the input of electronic compass 18, GPS19 joins with first, second input of PC respectively.
Described perpendicular polarization interferometer direction finding antenna array A is divided into two-layer (corresponding two frequency ranges), arranges along short transverse, and every layer by Unit five active vertical dipole antenna composition circular array.Lower floor is A band (20MHz～1000MHz), 1.0 meters of array maximum gauges, 0.27 meter of a unit dipole length; The upper strata is B wave band (1000MHz～3000MHz), 0.38 meter of array maximum gauge, 0.185 meter of a unit dipole length.Antenna impedance is 50 Ω.
Horizontal polarization interferometer direction finding antenna array B forms the circle battle array by the loaded ring antenna of five pairs of horizontal positioned.With perpendicular polarization A band direction estimation antenna array on same horizontal plane, operating frequency is 20MHz～1000MHz, about 0.7 meter of array diameter, the interface pattern is a N type socket, antenna impedance is 50 Ω.
First electricity is outwarded winding and is closed unit 1 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 processor 10.It is used for the vertically polarized wave signal.First electricity is outwarded winding to close and is divided the high and low end electricity unit, pass of outwarding winding in the unit 1, and its low and middle-end electricity operating frequency of closing the unit of outwarding winding is 20MHz～1000MHz, and inside comprises that ANS 017L low side electricity is outwarded winding and closes and ALL 050L (1: 2+1: 5) power divider.It is equivalent to a high frequency electronic switch, it has 5 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 050L power divider is that the self-correcting signal that self-correcting signal generator 4 produces is divided into two-way earlier, and wherein one the tunnel is divided into 5 the tunnel again, introduces the low side electricity pass of outwarding winding, and is used for the system of 20MHz～1000MHz wave band 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 1: 5 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 018L is outwarded winding and closes and 1: 5 power divider of ALL 051L.It also is a high frequency electronic switch, and it has 5 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.Self-correcting signal generator 4 is mainly formed by 100MHz crystal oscillator (model H0-12B), frequency phase lock circuit, amplifying circuit, filter circuit serial connection.Producing a kind of frequency is the stable signal of 100MHz, delivers to the antenna oscillator end through outward winding pass, selector, distributor, amplifier, cable etc. of electricity, eliminating the phase error that internal system produces, thereby whole system is calibrated.Second electricity is outwarded winding and is closed unit 2 and be used for the horizontal polarized wave signal, and operating frequency is 30MHz～1300MHz.Its structure, the course of work and low side electricity are outwarded winding, and to close the unit identical.Its operation principle: when control voltage V1, V2 power up diode D
1-3During 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 4) from auxiliary route;
First selector 3 is to close 1, the second electricity major-minor signals of two couples that close 2 inputs of outwarding winding to select outwarding winding from first electricity, therefrom chooses 1 pair of major-minor signal output.It has 4 inputs, 2 outputs and 1 control/feeder ear.
First three function RF amplifier 5 and second three function RF amplifier 6, its operating frequency is 20MHz～3000MHz, has amplification, straight-through, three kinds of functions of decay, by software set.Two amplifiers are handled the main and side road signal from first selector 3 simultaneously.They respectively have 1 control/feeder ear, 1 input, 1 output.This three function amplifier is made up of high frequency relay 1, high frequency relay 2, amplifying circuit, attenuator circuit and power supply, the amplifier tube (model ERA-51SM) in first 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 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.
Third selector 7 is to carrying out gating from first three function amplifier 5, the direction finding main and side road signal of second three function amplifier 6, the monitor signal of second selector 11, exporting corresponding signal to receiver according to the number of channel of three channel receivers 8 (model TSR 2040).TSR 2,040 three channel receivers have three channels, and then selector 7 is just exported the 2 tunnel major-minor signals and 1 tunnel that are used for direction finding and is used for monitored signal to receiver.
8 pairs of input signals of three channel receivers carry out frequency conversion, demodulation, decoding, and output comprises the analog or digital intermediate-freuqncy signal of information such as signal frequency, amplitude, frequency deviation, percentage modulation bandwidth, level, deliver to PC 9 (ADVANTECH IPC-610) again and handle.Select the TSR 2,040 three channel monitorings/direction-finding receiver of Israel Tadiran company in the present embodiment for use, carry out three channel monitorings and double-channel correlation interferometer direction-finding.Wherein, double-channel monitoring/direction-finding receiver is mainly used in the double-channel correlation interferometer direction-finding; And when not direction finding, can automatically switch to monitoring by software again to measure, do the multichannel monitoring simultaneously, the monitoring that adapts to different frequency domains, modulation domain, time domain is measured, and really accomplishes dual-use, makes full use of investment resources.Israel TSR 2040 receivers adopt pci bus structure and modularized design, and a template is exactly a receive path.When by two or when more multimode is combined into multichannel receiver, add the RFM radio-frequency module, very high phase equalization can be arranged, realize two (more) channels correlation interferometer direction-finding.TSR 2040 receiver templates can be inserted in the industrial computer that has the PCI slot, fix with press strip up and down, constitute the virtual instrument platform of state-of-the-art embedded receiver computer combined in the present age.
PC 9 is as the carrier of 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 etc.) to the information data of a large amount of collections, thereby draws the orientation of signal.It is an industrial control computer, have that the speed of service is fast, capacity is big, reliable and stable, can expand, characteristics such as anti-seismic performance is good.
Monitoring and direction-finding processor 10 (model is DFC 050L) is system's each several part control drive unit and dc power supply unit.Processor is accepted the control command of computer by serial port and computer communication, implements the control to relevant unit.As: first, second electricity outwarded winding close the control of unit, first selector 3, two three function RF amplifiers, second selector 11, third selector 7, three channel receivers 8, system is monitored and direction finding radio signal according to software program.
Second selector 11 is 2: 1 selectors, and it is therefrom chosen 1 road monitor signal and send into third selector 7 selecting from the perpendicular polarization monitor signal of first RF amplifier 12 with from the horizontal polarization monitor signal of n amplifier 13.It has 2 signal input parts, 1 signal output part, 1 control end.
First RF amplifier 12 is a kind of difunctional amplifiers, has amplification, straight-through difunctional (compare with three function amplifiers, cancelled the attenuation function part), and the signal from perpendicular polarization monitoring aerial C is amplified.Its operating frequency is 20MHz～3000MHz, by software set.It has 1 control/feeder ear, 1 input, 1 output.This difunctional amplifier is made up of high frequency relay (model is RF303-12), amplifying circuit (wherein the model of amplifier tube is ERA-51SM) and power supply.When+when the 12V power supply was subjected to software control to be added on the high frequency relay, input signal was exported behind amplifying circuit, was " amplification ".When not powering up, input signal is " leading directly to " through the straight-through part output of high frequency relay.
N RF amplifier 13 is that the signal from horizontal polarization monitoring aerial D is amplified.(its 26S Proteasome Structure and Function is identical with RF amplifier 12)
Perpendicular polarization monitoring aerial C is divided into two kinds according to frequency range, and (20MHz～300MHz) is active monopole monitoring aerial to low frequency end; Front end (300MHz～3000MHz) be a kind of in horizontal plane direction-free active bipyramid omnidirectional antenna, antenna size is: base diameter 248mm; Height 318mm.Input impedance: 50 Ω, the interface pattern is a N type socket.
Horizontal polarization monitoring aerial D is a kind of active loading ring Shape antenna of horizontal positioned, 0.8 meter of diameter, and on radome, input impedance 50 Ω.
Battery pack or civil power 14 comprise civil power 220VAC and batteries (4 joint 12V100AH).
UPS 15 is a uninterrupted power supply, and model is that APC 1000VA is online.
The model of inverter is S1500-212.Be to carry car engine 12VDC electric energy more than needed to be converted into the 220VAC electricity, behind UPS, power to system.
The headstock azimuth indicator 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 links to each other with PC by serial ports.
GPS 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 mobile monitoring station, and its purposes is to determine the geographical position of locomotive (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 is for the mobile monitoring station provides real-time reference azimuth data, and gives computer transfer of data.Native system adopts the C100 type electronic compass of U.S. KVH company.
Printer is the BJC-85 of Japanese CANON company.
Claims (7)
1, dual-polarized multi-channel digital radio monitoring and correlation interferometer direction-finding mobile station, it is characterized in that signal that perpendicular polarization interferometer direction finding antenna array, horizontal polarization interferometer direction finding antenna array B, perpendicular polarization monitoring aerial, horizontal polarization monitoring aerial receive antenna outward winding with first electricity respectively close the unit, second electricity is outwarded winding and is closed corresponding the joining of first input end of unit, first RF amplifier, a n RF amplifier; First electricity is outwarded winding and is closed corresponding respectively first, second, third, fourth input that inserts first selector of first, second output that unit and second electricity are outwarded winding and closed the unit; Corresponding the joining of first, second input of the signal output part of first RF amplifier and n RF amplifier and second selector; The first input end of first output of first selector and first three function RF amplifier joins, and the first input end of second output of first selector and second three function RF amplifier joins; The output of first three function RF amplifier and the first input end of third selector join, second input of the output of second three function RF amplifier and third selector joins, and the 3rd input of the output of second selector and third selector joins; Corresponding respectively first, second, third input that inserts three channel receivers of three outputs of third selector; First output/input that end and PC were imported/gone out to first of three channel receivers joins, second of three channel receivers imports/goes out end and monitoring and direction-finding processor second and export/go into end and join, and first of monitoring and direction-finding processor exported/gone into end and PC second and import/go out end and join; The 3rd the output/input of PC and the input of router/going out end joins; First output of monitoring and direction-finding processor is outwarded winding with four-input terminal, second input of first three function RF amplifier, second input of second three function RF amplifier, the input of self-correcting signal generator, first electricity of third selector respectively and is closed unit and second electricity and outward winding that second input that closes the unit joins, the 5th input of first selector joins; First electricity is outwarded winding and is closed outward winding the 3rd input of unit, pass of unit the 3rd output and second electricity and join; Second output of monitoring and direction-finding processor joins with second input of first RF amplifier 12 and second input of n RF amplifier and the 3rd input of second selector respectively; First, second output of PC joins with the input of headstock azimuth indicator, printer respectively, and the input of electronic compass, GPS joins with first, second input of PC respectively.
2, dual-polarized multi-channel digital radio monitoring according to claim 1 and correlation interferometer direction-finding mobile station, it is characterized in that described perpendicular polarization interferometer direction finding antenna array, be divided into two-layer, corresponding two frequency ranges, arrange along short transverse, form circular array by the active vertical dipole antenna in Unit five for every layer, lower floor is A band (20MHz～1000MHz), 1.0 meters of array maximum gauges, 0.27 meter of unit dipole length; The upper strata be the B wave band (1000MHz～3000MHz), 0.38 meter of array maximum gauge, 0.185 meter of unit dipole length, antenna impedance is 50 Ω.
3, dual-polarized multi-channel digital radio monitoring according to claim 1 and correlation interferometer direction-finding mobile station is characterized in that horizontal polarization interferometer direction finding antenna array B, form the circle battle array by the loaded ring antenna of five pairs of horizontal positioned.With perpendicular polarization A band direction estimation antenna array on same horizontal plane, operating frequency is 20MHz～1000MHz, about 0.7 meter of array diameter, the interface pattern is a N type socket, antenna impedance is 50 Ω.
4, dual-polarized multi-channel digital radio monitoring according to claim 1 and correlation interferometer direction-finding mobile station, it is characterized in that first electricity is outwarded winding closes the unit and is divided into the low side electricity according to frequency range and outwards winding and close unit and the high-end electricity unit, pass of outwarding winding, its low and middle-end electricity operating frequency of closing the unit of outwarding winding is 20MHz～1000MHz, inside comprises that ANS 017L low side electricity is outwarded winding and closes and ALL 050L (1: 2+1: 5) power divider, it is equivalent to a high frequency electronic switch, it has 5 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, 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 018L is outwarded winding and closes and 1: 5 power divider of ALL051L.It also is a high frequency electronic switch, and it has 5 signal input parts, 2 signal output parts, 1 control/power supply port, 1 self-correcting signal input part.
5, dual-polarized multi-channel digital radio monitoring according to claim 1 and correlation interferometer direction-finding mobile station, it is characterized in that first three functions RF amplifier and second three function RF amplifier, form by first high frequency relay, second high frequency relay, amplifying circuit, attenuator circuit and power supply.
6, dual-polarized multi-channel digital radio monitoring according to claim 1 and correlation interferometer direction-finding mobile station, it is characterized in that perpendicular polarization monitoring aerial C is divided into two kinds according to frequency range, (20MHz～300MHz) is active monopole monitoring aerial to low frequency end; Front end (300MHz～3000MHz) be a kind of in horizontal plane direction-free active bipyramid omnidirectional antenna, antenna size is: base diameter 248mm; Height 318mm.Input impedance: 50 Ω, the interface pattern is a N type socket; Horizontal polarization monitoring aerial D is a kind of active loading ring Shape antenna of horizontal positioned, 0.8 meter of diameter, and on radome, input impedance 50 Ω.
7, dual-polarized multi-channel digital radio monitoring according to claim 1 and correlation interferometer direction-finding mobile station, it is characterized in that the headstock azimuth indicator is located at the aspect that shows in real time on the LCDs with respect to headstock, it links to each other with PC by serial ports.
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| CNA2006100882943A CN1885738A (en) | 2006-07-10 | 2006-07-10 | Dual-polarized multi-channel digital radio monitoring and correlation interferometer direction-finding mobile station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114755626A (en) * | 2022-03-04 | 2022-07-15 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Radio direction finder for airborne search and rescue and direction finding method thereof |
-
2006
- 2006-07-10 CN CNA2006100882943A patent/CN1885738A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114755626A (en) * | 2022-03-04 | 2022-07-15 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Radio direction finder for airborne search and rescue and direction finding method thereof |
| CN114755626B (en) * | 2022-03-04 | 2025-02-21 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | A radio direction finder for airborne search and rescue and a direction finding method thereof |
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