CN103312358A - Respond wireless interference signal generator and method thereof - Google Patents
Respond wireless interference signal generator and method thereof Download PDFInfo
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- CN103312358A CN103312358A CN2013101920158A CN201310192015A CN103312358A CN 103312358 A CN103312358 A CN 103312358A CN 2013101920158 A CN2013101920158 A CN 2013101920158A CN 201310192015 A CN201310192015 A CN 201310192015A CN 103312358 A CN103312358 A CN 103312358A
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Abstract
The invention discloses a respond wireless interference signal generator and a method thereof. According to the device, a PDA (personal digital assistant) connected with a DSP (digital signal processing) controller is connected with a programmable pulse time delay circuit, a frequency synthesizer and a DDS (direct digital synthesizer) respectively; the frequency synthesizer outputs a local oscillator signal to the DDS and a signal receiving circuit; a time delay circuit is connected with the control end of a DFRM (digital radio frequency memory) of which the input end is connected with a receiving circuit and an antenna; the output end of the DFRM is connected with an IF (intermediate frequency) mixer connected with a clutter generator by a numerical control attenuator; the output end of the IF mixer is connected with a plurality of signal output circuits by a power distributor; and each signal output circuit is also connected with the DDS, and the tail end of each path of output circuit outputs a modulated simulation target signal through the antenna. The respond wireless interference signal generator and the method thereof can perform programming process according to an aerial target motion rule, performs deception or checking on radio positioning equipment by the directed radiation of received same frequency and signal modes, and are suitable for various kinds of radio positioning equipment.
Description
Technical field
The present invention relates to application of electronic technology, specifically a kind of formula wireless interference signal generation device and method thereof of replying.
Background technology
At present, the mode that is used for radio fixing aid(s) signal imitation mainly is to extract radio-frequency information with wired mode from the radio fixing aid(s) main frame, add the moving target element by simulator, after power amplification, pass through antenna closely to aerial radiation, radio fixing aid(s) receives that signal carries out analyzing and testing, tests to the radio fixing aid(s) performance with this.This pattern is only applicable to have the radio fixing aid(s) that Doppler detects performance, and is subjected to wired restriction, and operating distance is limited, and range of application is very little.This mode and analog signal object have dependence, can only carry out comprehensive detection to electronic equipments such as radio fixing aid(s)s as signal source, can not independently produce answer signal and be used for radio fixing aid(s) is carried out cheating interference.
Summary of the invention
Technical problem to be solved by this invention provides a kind of formula wireless interference signal generation device and method thereof of replying, transmitting of radio fixing aid(s) stored, according to behind the self-programming with response mode feedback radio fixing aid(s).This device not only can carry out comprehensive detection to electronic equipments such as radiolocators, can also implement deception and interference to the radio fixing aid(s) of various modes, and operating distance is farther.
A kind of formula wireless interference signal generation device of replying of the present invention, it mainly comprises PDA(Personal Digital Assistant, personal digital assistant), DSP (Digital Signal Processing, Digital Signal Processing) controller, the DRFM(digital radiofrequency memory), frequency synthesizer, DDS(Direct Digital Synthesizer, Direct Digital Synthesizer) and antenna, described PDA connects dsp controller, dsp controller connects respectively the programmable pulse delay circuit through the data buffer storage switching controller, frequency synthesizer and DDS, frequency synthesizer export local oscillation signal simultaneously to DDS and signal receiving circuit; The programmable pulse delay circuit is connected with the control end of DRFM again, and the input of DRFM connects signal receiving circuit, and signal receiving circuit top connects antenna; The output of DRFM connects the IF frequency mixer, and the IF frequency mixer also connects the clutter generator through numerical-control attenuator; The IF mixer output connects some roads signal output apparatus through power divider, and each road signal output apparatus also connects DDS simultaneously, the simulated target signal of each road signal output apparatus end after modulation of antenna output.
Signal receiving circuit comprises: downlink radio frequency switch, the limiting amplifier that is connected successively by antenna, turn frequency mixer to DRFM down, turn frequency mixer and also be connected with frequency synthesizer down.
Signal output apparatus comprises: by DDS connect successively on turn frequency mixer, power amplifier, up radio-frequency (RF) switch, numerical-control attenuator to antenna.
In addition, the present invention also provides a kind of formula wireless interference signal production method of replying, it may further comprise the steps: the radio fixing aid(s) pulse signal that is received by reception antenna, through the limiting amplifier amplitude limit and by the radio-frequency (RF) switch control inputs, the intermediate-freuqncy signal that obtains after the radio-frequency (RF) local oscillator signal mixing that frequency mixer and frequency synthesizer are sent here is stored in the address that DRFM determines; The programming control signal that contains various information of being sent here by PDA is after DSP processes, export a control command by the data buffer storage translation interface, the delay time of calculating according to the simulated target movement locus goes to extract among the DRFM intermediate-freuqncy signal, this signal is in intermediate frequency mixer, interfere information mixing with the clutter generator is sent here produces new intermediate-freuqncy signal.Frequency synthesizer produces the standard high-frequency reference signal of high stability, and being used for the upper and lower mixing coherent reference signal that turns frequency is f
1(local oscillator) signal; DDS produces under PDA control and contains speed doppler frequency f
1 ±f
dCoherent signal, this signal finally mixes with intermediate-freuqncy signal, on turn and frequently be reduced into the radio fixing aid(s) radiofrequency signal, power amplification is gone out by aerial radiation; The signal of aerial radiation also contains velocity information and interfere information except the first-harmonic of the radio fixing aid(s) of having been delayed time, the information that radio fixing aid(s) receives is exactly a simulated target signal that the motion of jamming pattern is arranged.
The present invention adopts DRFM(radio-frequency (RF) digital memory technology), utilize wireless receiving and digital storage technique, under computer control, carry out programmed process by the aerial target mechanics, then with identical frequency and signal form directed radiation to aerial, radio fixing aid(s) is cheated or is checked.The present invention is applicable to different types of radio fixing aid(s).In addition, the present invention also is provided with and injects to received signal Doppler frequency and compacting interference semiotic function, can implement deception and interference to the radio fixing aid(s) of multiple formula.This device can bringing into play usefulness at a distance, have certain actual combat meaning in conjunction with high-power output equipment.
Description of drawings
Fig. 1 is module frame chart of the present invention.
Embodiment
Such as Fig. 1, the formula wireless interference signal generation device of replying of the present invention, mainly comprise PDA, dsp controller, DRFM, frequency synthesizer, DDS and antenna, described PDA connects dsp controller, dsp controller connects respectively programmable pulse delay circuit, frequency synthesizer and DDS through the data buffer storage switching controller, and frequency synthesizer is exported local oscillation signal simultaneously to DDS and signal receiving circuit; The programmable pulse delay circuit is connected with the control end of DRFM again, and the input of DRFM connects signal receiving circuit, and signal receiving circuit top connects antenna; The output of DRFM connects the IF frequency mixer, and the IF frequency mixer also connects the clutter generator through numerical-control attenuator; The IF mixer output connects the two paths of signals output circuit through power divider, and each road signal output apparatus also connects DDS simultaneously, the simulated target signal of each road signal output apparatus end after modulation of antenna output.
Wherein, signal receiving circuit comprises: downlink radio frequency switch, the limiting amplifier that is connected successively by antenna, turn frequency mixer to DRFM down, turn frequency mixer and also be connected with frequency synthesizer down.Signal output apparatus comprises: by DDS connect successively on turn frequency mixer, power amplifier, up radio-frequency (RF) switch, numerical-control attenuator to antenna.
Below formation of the present invention is described in detail.
DRFM and high stability local vibration source are key problems-solvings of the present invention.Along with the development of chip technology, the quality of radio frequency storage chip has very much progress, and this just provides assurance for the radio frequency storage.This programme is receiving and is launching two stages and use same local oscillation signal source, and the stability of its signal is crucial, uses high-level crystal oscillator and frequency synthesis technique, has solved preferably this problem.
The DRFM(digital radiofrequency memory)
The intermediate-freuqncy signal of radio fixing aid(s) radiofrequency signal after conversion carried out A/D conversion formation digital quantity to be stored in the assigned address, under the Video Controller effect, again this signal is taken out and carries out D/A and be for conversion into analog quantity, deliver to and turn frequency circuit and be reduced into the radio fixing aid(s) radiofrequency signal.DRFM plays a part in system the storage of radio fixing aid(s) signal high-fidelity, time-delay, is the key component of system.The digital RF memory circuit by local oscillator, lower turn frequently device, DRFM memory cell, on turn frequently device etc. and form.The present invention adds intermediate frequency mixer after DRFM, be for low frequency noise jamming signal injection wherein.
Digital radiofrequency memory (DRFM) is the chief component of active radio electricity positioning equipment jammer in the Modern Electronic Countermeasure system, after the radio fixing aid(s) signal that receives is accurately copied, return again this radio fixing aid(s) system, obscure this system with this.Use just the characteristics that accurately copy the radio fixing aid(s) signal of DRFM, the DRFM technology is widely used in the development in various radio fixing aid(s) echo signal generators, radio fixing aid(s) comprehensive tester and all kinds of universal signals source.Its basic functional principle: at first the input radio frequency signal is down-converted to intermediate-freuqncy signal, after the A/D conversion, become digital signal, write in the store through cache.When needs are retransmitted this signal, under controller control, read this digital signal and be transformed to analog signal by D/A.Then with same the up-conversion of bestirring oneself, obtain the radio frequency output signal, finish the storage forwarding to defeated people's signal.
f
d
Analog circuit
According to the programming of PDA to the simulated target course line speed of a ship or plane, convert target velocity to Doppler frequency, be used for the motion state of simulated target.By DDS and on turn frequently device etc. and form.DDS produces under PDA control and contains f
dThe coherent signal of (speed doppler frequency), this signal finally mixes with intermediate-freuqncy signal, on turn and frequently be reduced into the radio fixing aid(s) radiofrequency signal, power amplification is gone out by aerial radiation.The signal of aerial radiation contains velocity information, and the information that radio fixing aid(s) receives is exactly the simulated target signal of a motion.
The radio-frequency power unit
Each output branch road all need be set up power amplification unit, and its power gain is decided on user demand, if apply to the long-range high-power output amplifier that then needs, generally applies to the radio fixing aid(s) detection power and can be controlled in the 1W.
Antenna
Be parabolic directional antenna, bore is determined according to demand.Be used for radio fixing aid(s) and detect available 60mm bore.
Principle summary
The radio fixing aid(s) pulse signal that is received by reception antenna, through the limiting amplifier amplitude limit and by the radio-frequency (RF) switch control inputs, the intermediate-freuqncy signal that obtains after the radio-frequency (RF) local oscillator signal mixing that frequency mixer and frequency synthesizer (local oscillator) are sent here is at the DRFM(digital radiofrequency memory) store in the definite address.The programming control signal that contains various information of being sent here by PDA is after DSP processes, export a control command by the data buffer storage translation interface, the delay time of calculating according to the simulated target movement locus goes to extract among the DRFM intermediate-freuqncy signal, this signal is in intermediate frequency mixer, interfere information mixing with the clutter generator is sent here produces new intermediate-freuqncy signal.Frequency synthesizer (local oscillator) produces the standard high-frequency reference signal (the complete unique local oscillation signal of machine) of high stability, and being used for the upper and lower mixing coherent reference signal that turns frequency is f
1Signal.DDS produces under PDA control and contains f
1 ±f
dThe coherent signal of (speed doppler frequency), this signal finally mixes with intermediate-freuqncy signal, on turn and frequently be reduced into the radio fixing aid(s) radiofrequency signal, power amplification is gone out by aerial radiation.The signal of aerial radiation also contains velocity information and interfere information except the first-harmonic of the radio fixing aid(s) of having been delayed time, the information that radio fixing aid(s) receives is exactly a simulated target signal that the motion of jamming pattern is arranged.
The present invention has three large functions: the one, and the speed of skimulated motion target is used for check or deception Doppler range rate measurement and fire control radio fixing aid(s); The 2nd, the friction speed target in many batches of course lines of simulation is returned the radio fixing aid(s) receiving system with radio fixing aid(s) self-information pattern; The 3rd, add certain Weak Signals in Clutter Interference, can be used as and detect or compacting interference use.The present invention also can be used as signal source the plurality of devices such as radio fixing aid(s) is detected except applying to electronic countermeasures, is all exercisable integronics of the army and the people.
The present invention can adopt wireless mode to receive and establishment course line and speed for the radio fixing aid(s) that transmits, and launches to it with radio fixing aid(s) original signal pattern, has great duplicity.This equipment of utilization can disturb the work radio fixing aid(s), also can be used as signal source the electronic equipments such as radio fixing aid(s) are carried out comprehensive detection, has wide utilization prospect.This equipment is for concrete utilization object, can be designed to portablely, also can be designed to main equipment, and remote object is carried out Disturbance and deceit.Computer programming and easy to operation.At present, device required for the present invention is all with maturation.Its impact on environment is identical with radio fixing aid(s), and is portable then minimum because of radio-frequency power, on environment substantially without the impact.
The concrete application approach of the present invention is a lot, and the above only is preferred implementation of the present invention, should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (4)
1. reply formula wireless interference signal generation device for one kind, it is characterized in that, mainly comprise PDA, dsp controller, DRFM, frequency synthesizer, DDS and antenna, described PDA connects dsp controller, dsp controller connects respectively programmable pulse delay circuit, frequency synthesizer and DDS through the data buffer storage switching controller, and frequency synthesizer is exported local oscillation signal simultaneously to DDS and signal receiving circuit; The programmable pulse delay circuit is connected with the control end of DRFM again, and the input of DRFM connects signal receiving circuit, and signal receiving circuit top connects antenna; The output of DRFM connects the IF frequency mixer, and the IF frequency mixer also connects the clutter generator through numerical-control attenuator; The IF mixer output connects some roads signal output apparatus through power divider, and each road signal output apparatus also connects DDS simultaneously, the simulated target signal of each road signal output apparatus end after modulation of antenna output.
2. the formula wireless interference signal generation device of replying according to claim 1, it is characterized in that, signal receiving circuit comprises: downlink radio frequency switch, the limiting amplifier that is connected successively by antenna, turn frequency mixer to DRFM down, turn frequency mixer and also be connected with frequency synthesizer down.
3. the formula wireless interference signal generation device of replying according to claim 1 and 2 is characterized in that, signal output apparatus comprises: by DDS connect successively on turn frequency mixer, power amplifier, up radio-frequency (RF) switch, numerical-control attenuator to antenna.
4. reply formula wireless interference signal production method for one kind, it is characterized in that may further comprise the steps: the radio fixing aid(s) pulse signal that is received by reception antenna, through the limiting amplifier amplitude limit and by the radio-frequency (RF) switch control inputs, the intermediate-freuqncy signal that obtains after the radio-frequency (RF) local oscillator signal mixing that frequency mixer and frequency synthesizer are sent here is stored in the address that DRFM determines; The programming control signal that contains various information of being sent here by PDA is after DSP processes, export a control command by the data buffer storage translation interface, the delay time of calculating according to the simulated target movement locus removes to extract among the DRFM digital intermediate frequency signal, this signal after the D/A conversion in intermediate frequency mixer, the low-frequency disturbance information mixing of sending here with the clutter generator, produce new intermediate-freuqncy signal, frequency synthesizer produces the standard high-frequency reference signal of high stability, and being used for the upper and lower mixing coherent reference signal that turns frequency is f
1Signal; DDS produces under PDA control and contains speed doppler frequency f
1 ±f
dCoherent signal, this signal finally mixes with intermediate-freuqncy signal, on turn and frequently be reduced into the radio fixing aid(s) radiofrequency signal, power amplification is gone out by aerial radiation; The signal of aerial radiation also contains velocity information and interfere information except the first-harmonic of the radio fixing aid(s) of having been delayed time, the information that radio fixing aid(s) receives is exactly a simulated target signal that the motion of jamming pattern is arranged.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104849703A (en) * | 2015-05-25 | 2015-08-19 | 扬州宇安电子科技有限公司 | Internal and external field dual-purpose portable interference simulation device |
| CN107666363A (en) * | 2017-09-26 | 2018-02-06 | 中国人民解放军63888部队 | A kind of OFDM wireless communication signals interference method |
| CN108011646A (en) * | 2017-12-18 | 2018-05-08 | 南京新频点电子科技有限公司 | A kind of frequency adaptively suppresses countermeasure set |
| CN110927683A (en) * | 2019-10-17 | 2020-03-27 | 南京国立电子科技有限公司 | Interference signal generating device and method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104849703A (en) * | 2015-05-25 | 2015-08-19 | 扬州宇安电子科技有限公司 | Internal and external field dual-purpose portable interference simulation device |
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| CN108011646A (en) * | 2017-12-18 | 2018-05-08 | 南京新频点电子科技有限公司 | A kind of frequency adaptively suppresses countermeasure set |
| CN108011646B (en) * | 2017-12-18 | 2023-09-19 | 南京新频点电子科技有限公司 | Frequency self-adaptive interference suppression device |
| CN110927683A (en) * | 2019-10-17 | 2020-03-27 | 南京国立电子科技有限公司 | Interference signal generating device and method thereof |
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Denomination of invention: A responsive wireless interference signal generation device and its method Effective date of registration: 20220124 Granted publication date: 20150204 Pledgee: China Construction Bank Corporation Nanjing Xuanwu sub branch Pledgor: NANJING XINPINDIAN ELECTRONIC TECHNOLOGY CO.,LTD. Registration number: Y2022980000897 |