CN104459641A - Microwave environment interference signal simulating system - Google Patents
Microwave environment interference signal simulating system Download PDFInfo
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- CN104459641A CN104459641A CN201410674831.7A CN201410674831A CN104459641A CN 104459641 A CN104459641 A CN 104459641A CN 201410674831 A CN201410674831 A CN 201410674831A CN 104459641 A CN104459641 A CN 104459641A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4052—Means for monitoring or calibrating by simulation of echoes
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- Computer Networks & Wireless Communication (AREA)
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention provides a microwave environment interference signal simulating system. The system comprises a radar interference signal simulator, a multi-path interference signal simulator, an exchanger and a computer control platform, wherein the radar interference signal simulator and the multi-path interference signal simulator are connected with the exchanger through cables respectively, and the exchanger is connected with the computer control platform through a cable. The system meets the requirements of a radar interference resistance and multi-path interference resistance test conducted on a seeker product.
Description
Technical field
The present invention relates to a kind of simulation system, particularly, relate to a kind of microwave environment undesired signal simulation system.
Background technology
The application of electronic warfare in modern war is more and more extensive, therefore, more and more higher to the requirement of the antijamming capability of passive microwave target seeker.Need to examine the antijamming capability under various complex jamming environment in the development and qualification process of passive microwave target seeker system, traditional test method is mainly carried out in outfield, but the true Complicated Electromagnetic Environment in Battlefield of field stimulation is very difficult outside, simultaneously also costly, the number of times of field trial is limited, is difficult to reflect the interference free performance of passive microwave target seeker under various interference environment comprehensively.In order to the interference free performance of comprehensive assessment passive microwave target seeker, extensively carry out the research of microwave environment undesired signal analogue technique both at home and abroad.
A kind of pouring-in Radar jam signal environmental simulation system is described in " Radar jam signal environment simulation technique and system thereof " paper of " avionics " periodical.This system can guinea pig target echo, duplicity and the Radar jam signal such as suppression jamming, clutter.It is directly connected with tested target seeker by equipment without antenna by radio-frequency cable, is injected in tested target seeker according to combat simulated target echo, interference and noise signal.This system adopts pouring-in, without antenna, before the test, by the antenna removal of tested target seeker, after having tested, then by astronomical cycle, will need again to debug tested target seeker, add workload; In addition for the formal target seeker completing payment, be do not allow to carry out dismounting, therefore cannot assess with the interference free performance of this system to delivered target seeker.
A kind of multi-path signal analogy method is described in " Digital Simulation of active radar target seeker multipath effect " paper of " BJ University of Aeronautics & Astronautics's journal " periodical.This article, for ground that is smooth and that rise and fall or sea, sets forth a kind of time domain complex envelope climate digital realistic model of the multipath echo based on multiple reflection point complex target.Random somatotype interpolation algorithm is adopted to utilize landform measured data to carry out three dimensional ground model to the rolling ground of complexity and sea.Carried out simulation calculation to the multipath echo of the ground low target of different roughness, Multipath reflection echo is injected radar seeker digital simulation model, and under obtaining there is multipath disturbed condition, target seeker is to the tracking simulation result of low target.Adopt Digital Simulation, need the operation time that cost is very long, real-time is not strong; In addition, target seeker adopts digital simulation model, because modeling exists error, accurately can not reflect the anti-multipath interference performance of true target seeker.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of microwave environment undesired signal simulation system, it meets the anti-radar jamming of target seeker product and multipath jamming performance test needs.
According to an aspect of the present invention, a kind of microwave environment undesired signal simulation system is provided, it is characterized in that, it comprises Radar jam signal simulator, multipath interference signal generatord, switch, computing machine parametric controller, wherein Radar jam signal simulator, multipath interference signal generatord are connected with switch respectively by netting twine, and switch is connected with computing machine parametric controller by a netting twine.
Preferably, described Radar jam signal simulator comprises the first microwave signal generator, travelling-wave tube power amplifier, the first emitting antenna, the first signal control panel, feeder line, waveguide, first microwave signal generator, travelling-wave tube power amplifier are all connected with the first signal control panel, the radio frequency delivery outlet of travelling-wave tube power amplifier is connected with one end of waveguide, the waveguide other end is connected with the first emitting antenna, first microwave signal generator is connected by feeder line with the rf input port of travelling-wave tube power amplifier, and the first signal control panel is connected with computing machine.
Preferably, described travelling-wave tube power amplifier has gpib interface, and gpib interface is provided with GPIB and turns Ethernet interface, then it is connected with switch by netting twine.
Preferably, described multipath interference signal generatord comprises the second microwave signal generator, multi-path signal generator and the second emitting antenna, and the second microwave signal generator is connected by the rf input port of feeder line with multi-path signal generator; Three radio frequency delivery outlets of multi-path signal generator are connected with three the second emitting antennas, by the second emitting antenna radiation three tunnel radiofrequency signal respectively by three feeder lines.
Preferably, described multi-path signal generator comprises three power splitters, two phase shifters, three power attenuators, three power amplifiers, some feeder lines and three single-pole single-throw switch (SPST)s, and wherein the rf input port of three power splitters is connected with the second microwave signal generator by feeder line; Three power splitters have echo signal delivery outlet and multipath undesired signal delivery outlet, and echo signal delivery outlet is connected with power attenuator, power amplifier, single-pole single-throw switch (SPST) and the second emitting antenna respectively by feeder line; Multipath undesired signal delivery outlet is connected with phase shifter, power attenuator, power amplifier, single-pole single-throw switch (SPST) and the second emitting antenna respectively by feeder line.
Preferably, described multi-path signal generator is provided with an Ethernet interface, and Ethernet interface is connected with switch by netting twine.
Compared with prior art, the present invention has following beneficial effect: one, microwave environment undesired signal simulation system can simulate various undesired signal, noise signal, signal kinds is complete, pattern is abundant, bandwidth, can be widely used in test and the qualification of radar seeker antijamming capability.Two, the present invention is based on selection standard instrument, microwave device and computing machine parametric controller, there is universalization, modularization, modularization feature, get around the development work of microwave environment undesired signal simulation system complexity in the past, greatly reduced development cost, shorten the lead time.Three, the present invention adopts empty feedback mode to apply interference to target seeker product, has feature fast and efficiently.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is Radar jam signal simulator theory of constitution block diagram.
Fig. 2 is multipath interference signal generatord theory of constitution block diagram.
Fig. 3 is microwave environment interference simulation system rejection to disturbance test schematic diagram.
Fig. 4 is the schematic diagram that in noiseless situation, passive microwave target seeker exports angle measurement signal.
Fig. 5 is the schematic diagram that after applying interference, passive microwave target seeker exports angle measurement signal.
Fig. 6 is the theory diagram of microwave environment undesired signal simulation system of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
Below in conjunction with the drawings and specific embodiments, the microwave environment undesired signal simulation system that the present invention proposes is described in further detail.
As shown in Figure 6, microwave environment undesired signal simulation system of the present invention comprises connection successively and comprises Radar jam signal simulator, multipath interference signal generatord, switch, computing machine parametric controller, wherein Radar jam signal simulator, multipath interference signal generatord are connected with switch respectively by netting twine, and switch is connected with computing machine parametric controller by a netting twine.
Radar jam signal simulator theory of constitution block diagram in microwave environment interference simulation system as shown in Figure 1, comprise the first microwave signal generator, travelling-wave tube power amplifier, first emitting antenna 1, feeder line 3, waveguide 4, first microwave signal generator, travelling-wave tube power amplifier is all connected with a first signal control panel, the radio frequency delivery outlet of travelling-wave tube power amplifier is connected with one end of waveguide, the waveguide other end is connected with the first emitting antenna 1, first microwave signal generator is connected by feeder line with the rf input port of travelling-wave tube power amplifier, first signal control panel is connected with computing machine.Travelling-wave tube power amplifier has GPIB (General-Purpose Interface Bus, general purpose interface bus) interface, and gpib interface is provided with GPIB and turns Ethernet interface, then it is connected with switch by netting twine.First microwave signal generator produces microwave signal, the first microwave signal generator in the present invention selects domestic AV1431 model (band 90dB adjustable attenuator), first microwave signal generator output signal frequency scope 10MHz ~ 18GHz of this model, dynamic range can reach-110 ~+5dBm, built-in modulation signal generator, can realize the more modulation functions such as frequency modulation, amplitude modulation, pulsed modulation.The microwave signal that first microwave signal generator produces is transported to travelling-wave tube power amplifier through feeder line, and travelling-wave tube power amplifier amplifies microwave signal power.The 300T7z5G18 model that travelling-wave tube power amplifier in the present invention selects AR company of the U.S. to produce, this amplifier can provide the output of minimum 300W within the scope of 8-18GHz, reaches the output power magnitude of true radar system.Microwave signal after power amplification gives the first emitting antenna by waveguide, and the mode of being presented with sky by the first emitting antenna applies interference to test product.The Broadband Horn Antenna of the first emitting antenna selected frequency 8-18GHz in the present invention.Computing machine is connected with the first microwave signal generator, travelling-wave tube power amplifier by the first signal control panel, first signal control panel mainly completes the interface conversion between computing machine and multi-path signal analog device, first signal control panel realizes data control signal being transformed into udp protocol, with compunication.First emitting antenna radiation Radar jam signal.Arranged by the parameter of control software design to Radar jam signal of installing in computing machine, the parameter that can arrange comprises undesired signal frequency, power, modulation system etc., and calculates by control software design and arrive by the real power of trial product place undesired signal after spatial attenuation.
Multipath interference signal generatord theory of constitution block diagram in microwave environment interference simulation system as shown in Figure 2, comprise the second microwave signal generator, multi-path signal generator and the second emitting antenna 2, second microwave signal generator to be connected by the rf input port of feeder line with multi-path signal generator; Three radio frequency delivery outlets of multi-path signal generator are connected with three the second emitting antennas respectively by three feeder lines, and by the second emitting antenna radiation three tunnel radiofrequency signal, wherein a road represents echo signal, and two-way represents multipath undesired signal in addition.Multi-path signal generator is provided with an Ethernet interface, and Ethernet interface is connected with switch by netting twine.Multi-path signal generator comprises three power splitters, two phase shifters, three power attenuators, three power amplifiers, some feeder lines and three single-pole single-throw switch (SPST)s, and wherein the rf input port of three power splitters is connected with the second microwave signal generator by feeder line; Microwave signal is divided into three tunnels by three power splitters, and a road represents echo signal, and two-way represents multipath undesired signal in addition.Three power splitters have three radio frequency delivery outlets (echo signal delivery outlet and multipath undesired signal delivery outlet), and echo signal delivery outlet is connected with power attenuator, power amplifier, single-pole single-throw switch (SPST) and the second emitting antenna respectively by feeder line; Multipath undesired signal delivery outlet is connected with phase shifter, power attenuator, power amplifier, single-pole single-throw switch (SPST) and the second emitting antenna respectively by feeder line.Second microwave signal generator is connected with a secondary signal control panel, and secondary signal control panel is connected with computing machine.The second microwave signal generator in multipath interference signal generatord is identical with the model of the first microwave signal generator in Radar jam signal simulator.The microwave signal that second microwave signal generator produces is divided into three road signals through three power splitters, and a road signal represents echo signal, and two paths of signals represents multipath undesired signal in addition.Echo signal passes through the second emitting antenna 2 radiation after power attenuator, power amplifier and single-pole single-throw switch (SPST).Multipath undesired signal passes through the second emitting antenna radiation after phase shifter, power attenuator, power amplifier and single-pole single-throw switch (SPST).Multipath undesired signal is identical with echo signal frequency, and power and phase place there are differences, and can produce co-channel interference to tested target seeker, the effect of interference depends on the size of power and phase difference.In the present invention, phase shifter is the 7728A model broad-band phase shifter that herley company produces, and frequency range covers 8-18GHz, by regulating phase shifter, makes echo signal and undesired signal produce phase differential.Power attenuator and power amplifier are used to the size regulating echo signal and interfering signal power.Medium-power attenuator of the present invention selects the 3498H-6411bit numerical-control attenuator in herley company 349H series of products, and attenuation range reaches 64dB.The ZVE-3W-183+ wide-band microwave power amplifier of Mini-Circuit company selected by power amplifier, and its gain is 35dB, and Saturated output is 3W.Single-pole single-throw switch (SPST) is used for controlling the switch of each road signal.Secondary signal control panel mainly completes the interface conversion between computing machine and multi-path signal analog device, and secondary signal control panel realizes data control signal being transformed into udp protocol, with compunication.Arranged by the parameter of control software design to multipath undesired signal of installing in computing machine, the parameter that can arrange comprises undesired signal frequency, power, phase place etc., and calculates by control software design and arrive by the real power of trial product place undesired signal after spatial attenuation.First signal control panel, secondary signal control panel, computing machine all belong to computing machine parametric controller, realize the communication between each module like this.
Disturb the passive microwave target seeker in darkroom with this cover system, interference test schematic diagram as shown in Figure 3.Radar jam signal set of frequency is 10GHz, and power 3dBm, modulation system are pulsed modulation.The set of frequency of echo signal 7 is 12GHz, power-50dBm, and modulation system is pulsed modulation.The frequency of the first multi-path signal 5 is 12GHz, power-60dBm, phase place random variation.The frequency of the second multi-path signal 6 is 12GHz, power-65dBm, phase place random variation.Fig. 4 is that in noiseless situation, passive microwave target seeker exports angle measurement signal, and Fig. 5 is that after applying interference, passive microwave target seeker exports angle measurement signal.By angle measurement signal contrast in Fig. 4, Fig. 5, we find that microwave environment interference simulation system can apply interference to target seeker.
The present invention can simulate typical radar radiation source, frequency coverage 8GHz-18GHz, also simulating the multipath undesired signal that typical sea produces simultaneously, providing undesired signal, for examining its tactical qualities in the mode of space radiation to tested target seeker.The present invention is based on selection standard instrument, microwave device and computing machine parametric controller, there is universalization, modularization, modularization feature, get around the development work of microwave environment undesired signal analogue means complexity in the past, greatly reduced development cost, shorten the lead time.The present invention adopts empty feedback mode to apply interference to target seeker product in addition, has feature fast and efficiently.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. a microwave environment undesired signal simulation system, it is characterized in that, it comprises Radar jam signal simulator, multipath interference signal generatord, switch, computing machine parametric controller, wherein Radar jam signal simulator, multipath interference signal generatord are connected with switch respectively by netting twine, and switch is connected with computing machine parametric controller by a netting twine.
2. microwave environment undesired signal simulation system according to claim 1, it is characterized in that, described Radar jam signal simulator comprises the first microwave signal generator, travelling-wave tube power amplifier, first emitting antenna, first signal control panel, feeder line, waveguide, first microwave signal generator, travelling-wave tube power amplifier is all connected with the first signal control panel, the radio frequency delivery outlet of travelling-wave tube power amplifier is connected with one end of waveguide, the waveguide other end is connected with the first emitting antenna, first microwave signal generator is connected by feeder line with the rf input port of travelling-wave tube power amplifier, first signal control panel is connected with computing machine.
3. microwave environment undesired signal simulation system according to claim 2, is characterized in that, described travelling-wave tube power amplifier has gpib interface, and gpib interface is provided with GPIB and turns Ethernet interface, then it is connected with switch by netting twine.
4. microwave environment undesired signal simulation system according to claim 1, it is characterized in that, described multipath interference signal generatord comprises the second microwave signal generator, multi-path signal generator and the second emitting antenna, and the second microwave signal generator is connected by the rf input port of feeder line with multi-path signal generator; Three radio frequency delivery outlets of multi-path signal generator are connected with three the second emitting antennas, by the second emitting antenna radiation three tunnel radiofrequency signal respectively by three feeder lines.
5. microwave environment undesired signal simulation system according to claim 4, it is characterized in that, described multi-path signal generator comprises three power splitters, two phase shifters, three power attenuators, three power amplifiers, some feeder lines and three single-pole single-throw switch (SPST)s, and wherein the rf input port of three power splitters is connected with the second microwave signal generator by feeder line; Three power splitters have echo signal delivery outlet and multipath undesired signal delivery outlet, and echo signal delivery outlet is connected with power attenuator, power amplifier, single-pole single-throw switch (SPST) and the second emitting antenna respectively by feeder line; Multipath undesired signal delivery outlet is connected with phase shifter, power attenuator, power amplifier, single-pole single-throw switch (SPST) and the second emitting antenna respectively by feeder line.
6. microwave environment undesired signal simulation system according to claim 5, is characterized in that, described multi-path signal generator is provided with an Ethernet interface, and Ethernet interface is connected with switch by netting twine.
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Cited By (6)
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| CN106645992A (en) * | 2016-12-28 | 2017-05-10 | 广州海格通信集团股份有限公司 | Anti-interference antenna wire testing device and implementation method thereof |
| CN109507650A (en) * | 2018-11-07 | 2019-03-22 | 中电科仪器仪表有限公司 | A kind of microwave lands digital multipath interference signal analogy method and system |
| CN112099067A (en) * | 2020-08-25 | 2020-12-18 | 中国铁路设计集团有限公司 | Deformation monitoring GNSS multi-path effect correction method based on local mean decomposition filtering |
| CN112415482A (en) * | 2020-09-30 | 2021-02-26 | 中国人民解放军63892部队 | Radio frequency injection type digital signal synthesis simulation test system |
| CN112946585A (en) * | 2019-12-11 | 2021-06-11 | 东莞天速通信技术有限公司 | Jammer based on space power synthesis and jamming method |
| CN112946586A (en) * | 2020-12-09 | 2021-06-11 | 中国人民解放军93204部队 | C-band guidance radar simulation system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645992A (en) * | 2016-12-28 | 2017-05-10 | 广州海格通信集团股份有限公司 | Anti-interference antenna wire testing device and implementation method thereof |
| CN109507650A (en) * | 2018-11-07 | 2019-03-22 | 中电科仪器仪表有限公司 | A kind of microwave lands digital multipath interference signal analogy method and system |
| CN109507650B (en) * | 2018-11-07 | 2020-09-01 | 中电科仪器仪表有限公司 | Microwave landing all-digital multipath interference signal simulation method and system |
| CN112946585A (en) * | 2019-12-11 | 2021-06-11 | 东莞天速通信技术有限公司 | Jammer based on space power synthesis and jamming method |
| CN112946585B (en) * | 2019-12-11 | 2024-03-01 | 东莞天速通信技术有限公司 | Jammer and jammer method based on space power synthesis |
| CN112099067A (en) * | 2020-08-25 | 2020-12-18 | 中国铁路设计集团有限公司 | Deformation monitoring GNSS multi-path effect correction method based on local mean decomposition filtering |
| CN112415482A (en) * | 2020-09-30 | 2021-02-26 | 中国人民解放军63892部队 | Radio frequency injection type digital signal synthesis simulation test system |
| CN112946586A (en) * | 2020-12-09 | 2021-06-11 | 中国人民解放军93204部队 | C-band guidance radar simulation system |
| CN112946586B (en) * | 2020-12-09 | 2023-01-24 | 中国人民解放军93204部队 | C-band guidance radar simulation system |
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