CN107979436B - Interference signal generation method and device, computer equipment and storage medium - Google Patents

Interference signal generation method and device, computer equipment and storage medium Download PDF

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CN107979436B
CN107979436B CN201711107679.4A CN201711107679A CN107979436B CN 107979436 B CN107979436 B CN 107979436B CN 201711107679 A CN201711107679 A CN 201711107679A CN 107979436 B CN107979436 B CN 107979436B
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interference
interference signal
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CN107979436A (en
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潘未庄
牟传坤
夏效禹
叶韬成
邹瑜
王甲池
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Guangzhou Haige Communication Group Inc Co
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/60—Jamming involving special techniques
    • H04K3/65—Jamming involving special techniques using deceptive jamming or spoofing, e.g. transmission of false signals for premature triggering of RCIED, for forced connection or disconnection to/from a network or for generation of dummy target signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/60—Jamming involving special techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators

Abstract

The invention relates to an interference signal generation method, an interference signal generation device, a storage medium and computer equipment. Analyzing the acquired interference parameter setting information to obtain analysis data; when the interference signal type is a suppressed interference signal type, generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data; converting the digital baseband interference signal into an analog baseband interference signal; mixing the analog baseband interference signal with a corresponding radio frequency signal to obtain a corresponding type of suppressed interference signal; amplifying the suppressed interference signals respectively, and outputting the amplified interference signals through corresponding interference channel radiation; when the interference signal type is a deception interference signal type, amplifying and filtering the received radio frequency signal to obtain a deception interference signal; and radiating and outputting the deception jamming signals through the corresponding jamming channels. The scheme of the invention can carry out parameter configuration according to actual requirements to realize the simultaneous output of interference signals with different functions.

Description

Interference signal generation method and device, computer equipment and storage medium
Technical Field
The invention belongs to the field of communication, relates to the field of satellite navigation application, and particularly relates to an interference signal generation method, an interference signal generation device, computer equipment and a storage medium.
Background
With the rapid development of communication technology, the application field of communication products is wider and wider, the requirements on the communication products are also improved, and the anti-interference performance of the communication products is taken as an effective means for checking the functions and performance of the products, and becomes a main standard for measuring the practical value of the communication products. In the communication field, a satellite navigation product can have practical value only by resisting various intentional and unintentional interferences, and functional tests of unmanned aerial vehicle management and control products, electromagnetic property tests of various electronic products and the like all require an interference source to simulate electromagnetic information in a specific environment, so that the quality of the interference source also seriously affects the quality of the communication product.
And traditional interference source is mostly single channel interference signal, can only realize the interference signal of the different frequency points of single passageway timesharing output through changing a plurality of local oscillator signals, can't provide the interference signal of different functions simultaneously.
Disclosure of Invention
In view of the above, it is necessary to provide an interference signal generating method, a system apparatus, a storage medium, and a computer device that can simultaneously provide interference signals of different functions in view of the above problems.
A method of interfering signal generation, comprising:
acquiring interference parameter setting information;
analyzing the interference parameter setting information to obtain analysis data, wherein the analysis data comprises interference signal types;
when the interference signal type is a suppressed interference signal type, generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data;
performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal;
mixing the analog baseband interference signal with a corresponding radio frequency signal to obtain a corresponding type of suppressed interference signal;
respectively amplifying the suppression interference signals, and outputting the amplified suppression interference signals through corresponding interference channels in a radiation manner;
when the interference signal type is a deception interference signal type, amplifying and filtering the received radio frequency signal to obtain a deception interference signal;
and radiating and outputting the deception jamming signals through the corresponding jamming channels.
In one embodiment, the spoofing interference signal includes a transponder-type spoofing interference signal, and the received radio frequency signal is amplified and filtered to obtain the spoofing interference signal, including:
amplifying and filtering the received radio frequency signal, and performing time simulation on the amplified and filtered radio frequency signal;
and performing power simulation on the signal after the time simulation is completed to obtain a forwarding type deception jamming signal.
In one embodiment, when the suppressed interference signal type is a multi-tone interference signal type, the digital baseband interference signal is a digital multi-tone baseband signal; generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data comprises:
calculating a frequency control word according to the analytic data and generating a corresponding radio frequency signal;
generating a corresponding single tone frequency according to the frequency control word;
the monophonic frequencies are synthesized into a digital polyphonic baseband signal.
In one embodiment, when the suppression interference signal type is the fm interference signal type, the digital baseband interference signal is a digital fm baseband signal; generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data comprises:
setting a phase control table according to the analytic data and generating a corresponding radio frequency signal;
and generating a digital frequency modulation baseband signal according to the phase control table.
In one embodiment, when the suppression interference signal type is a band-limited white gaussian noise interference signal type, the digital baseband interference signal is a digital frequency modulation baseband signal; generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data comprises:
generating Gaussian noise according to the analytic data and generating a corresponding radio frequency signal;
generating a noise signal by using Gaussian noise;
filtering the noise signal to obtain a phase control table;
and generating a digital frequency modulation baseband signal according to the phase control table.
In one embodiment, performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal includes:
generating a corresponding rectangular pulse signal according to the analytic data;
and controlling the digital baseband interference signal to perform digital-to-analog conversion according to the rectangular pulse signal to obtain an analog baseband interference signal.
The present invention also provides an interference signal generating apparatus, including:
the interface control module is used for acquiring interference parameter setting information;
the analysis module is used for analyzing the interference parameter setting information to obtain analysis data;
the generating module is used for generating interference signals of corresponding types according to the analysis data;
the amplifying module is used for amplifying the interference signal;
and the output module is used for radiating and outputting the amplified interference signals in the corresponding channels.
In one embodiment, the interference signal generating apparatus further includes:
and the pulse control module is used for generating a corresponding rectangular pulse signal according to the analysis data and controlling the digital baseband interference signal to perform digital-to-analog conversion according to the rectangular pulse signal to obtain an analog baseband interference signal.
The invention also provides a computer arrangement comprising a processor and a memory, the memory storing a computer program which, when executed by the processor, causes the processor to carry out the steps of a method of interference signal generation.
The invention also provides a computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, causes the processor to carry out the steps of the above-mentioned method.
According to the interference signal generation method, the interference signal generation device, the computer equipment and the storage medium, the analysis data is obtained by obtaining and analyzing the interference parameter setting information, the suppression interference signal and the deception interference signal can be simultaneously generated according to the interference signal type in the analysis data, and finally the interference signal of the corresponding type is radiated and output through the corresponding interference channel. By configuring different interference signal types according to the interference parameter setting information, an operator can perform parameter configuration according to actual requirements to simultaneously output interference signals with different functions.
Drawings
FIG. 1 is a flow chart illustrating a method for generating an interference signal according to an embodiment;
FIG. 2 is a schematic block diagram of interference signal modulation according to one embodiment;
FIG. 3 is a block diagram of a structure for generating a spoofed interfering signal in one embodiment;
FIG. 4 is a flow chart illustrating a method for generating an interference signal according to another embodiment;
FIG. 5 is a block diagram of an embodiment of generating a transponder-type spoofed jamming signal;
FIG. 6 is a flow diagram illustrating the generation of a digital multi-tone baseband signal from parsed data according to one embodiment;
FIG. 7 is a block diagram of a multi-tone interference signal generated in one embodiment;
FIG. 8 is a diagram illustrating key points in generating a multi-tone interference signal according to an embodiment;
FIG. 9 is a schematic flow chart of an embodiment for generating a digital FM baseband signal from parsed data;
FIG. 10 is a block diagram of an embodiment of generating a FM interferer;
FIG. 11 is a diagram illustrating key points in generating FM jamming signals according to one embodiment;
FIG. 12 is a schematic flow chart of an embodiment of generating a band-limited white Gaussian noise interference signal from analytic data;
FIG. 13 is a block diagram of an embodiment of generating a band-limited white Gaussian noise interference signal;
FIG. 14 is a diagram illustrating key points of an M-sequence generating a wideband white noise interference signal according to an embodiment;
FIG. 15 is a diagram illustrating key points of a plurality of narrow-band white noise interference signals generated by M sequences simultaneously according to an embodiment;
fig. 16 is a flow diagram illustrating the generation of a digital BPSK baseband signal from the parsed data in one embodiment;
figure 17 is a block diagram of the structure for generating a binary phase modulated BPSK interference signal in one embodiment;
fig. 18 is a diagram illustrating key points of the generation of BPSK interference signals by the M sequence according to an embodiment;
FIG. 19 is a schematic flow chart of an embodiment for generating a digital PN baseband signal from parsed data;
fig. 20 is a block diagram of a structure for generating a PN code modulated interference signal in one embodiment;
FIG. 21 is a diagram illustrating key points of an M sequence generating PN code modulated interference signals in one embodiment;
FIG. 22 is a flow chart illustrating the output of a pulse controlled interference signal according to one embodiment;
FIG. 23 is a block diagram of an embodiment of a structure for generating an impulsive interference signal;
fig. 24 is a block diagram showing the structure of an interference signal generating apparatus according to an embodiment;
fig. 25 is a block diagram of the structure of the interference parameter setting information reception and processing in one embodiment;
FIG. 26 is a schematic diagram of a multichannel expansion according to an embodiment;
fig. 27 is a block diagram showing the structure of an interference signal generating apparatus according to another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one embodiment, as shown in fig. 1, there is provided an interference signal generating method including:
step S100, obtaining interference parameter setting information.
An operator can configure interference parameter setting information according to actual needs, and transmit various control information and setting parameters to an interference source, wherein the interference parameter setting information comprises information such as interference signal types, numbers, power and the like.
Step S200, analyzing the interference parameter setting information to obtain analysis data, wherein the analysis data comprises interference signal types.
After the interference parameter setting information set by an operator is acquired, the interference parameter setting information needs to be analyzed, reformatting is carried out, and packaging is carried out, wherein the analyzed data comprises parameter information such as the type, the number and the power of interference signals, the analyzed data is correspondingly sent to each interference signal generation channel according to the type of the interference signals, and then the interference signals of corresponding types are generated in the corresponding channels according to the parameter information of the interference signals.
And step S300, when the interference signal type is a suppressed interference signal type, generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data.
And generating a digital baseband interference signal corresponding to interference parameter setting information set by an operator by adopting a digital processing technology according to the parameter information of the interference signal in the analysis data, and generating a radio frequency signal corresponding to the interference signal according to the parameter information. The suppressed interference signal includes a multi-tone interference signal, a frequency modulation interference signal, a band-limited white gaussian Noise interference signal, a Binary Phase Shift Keying (BPSK) modulated interference signal, and a Pseudo Noise (PN) code modulated interference signal, and when the interference signal is generated, the suppressed interference signal includes more than one type of the interference signal, and an operator can configure interference parameter setting information according to actual needs and control the type and number of the generated interference signal. According to the type and the number of the interference signals, corresponding interference signals can be generated by respectively setting corresponding channels. Meanwhile, the number of channels for generating the interference signals is also determined according to the interference parameter setting information configured by an operator.
And step S400, performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal.
And D/A converting the generated digital baseband interference signal to obtain an analog baseband interference signal, and completing the conversion from the digital baseband interference signal to the analog baseband interference signal.
Step S500, mixing the analog baseband interference signal and the corresponding radio frequency signal to obtain a corresponding type of suppressed interference signal.
And after the generated digital baseband interference signal is subjected to digital-to-analog conversion to obtain an analog baseband interference signal, mixing the analog baseband interference signal and the radio frequency signal of the corresponding type in a channel corresponding to the type of the suppressed interference signal to obtain the suppressed interference signal of the corresponding type, and finishing the conversion from the baseband interference signal to the radio frequency interference signal.
In step S500, the frequency mixing method for the analog baseband interference signal and the corresponding radio frequency signal is not unique, and in one embodiment, the frequency mixing method for the analog baseband interference signal and the radio frequency signal uses a zero intermediate frequency architecture and an IQ quadrature modulation method, and directly converts the digital zero intermediate frequency baseband signal to a radio frequency, so that the device size can be reduced, and the cost can be reduced; the modulation scheme is shown in fig. 2.
Assume that the digital baseband signal is represented as
s(n)＝cosΩ(n)+jsinΩ(n)
The analog baseband signal is represented as
s(t)＝cosΩt+jsinΩt
The radio frequency local oscillator signal is represented as
f(t0)＝cosμt0+jsinμt0
Then the baseband signal is modulated into the radio frequency signal
cosμt0×cosΩt+sinμt0×sinΩt＝cos(μt0-Ωt)
Namely, omega is deviated at the radio frequency central frequency point mu, and the modulation is realized. In this embodiment, except for the forwarding spoofing interference, the modulation method is adopted for generating all other interference signals, so as to complete the conversion from the digital signal to the radio frequency signal.
And S600, respectively amplifying the suppression interference signals, and outputting the amplified suppression interference signals through corresponding channels in a radiation manner.
Each interference suppression signal is generated in a channel corresponding to the type of the interference suppression signal, and each interference channel operates independently to realize independent generation of the interference signal.
And step S700, when the type of the interference signal is a deception interference signal type, amplifying and filtering the received radio frequency signal to obtain a deception interference signal.
And when the interference signal type is a deception interference signal type, receiving the radio frequency signal, amplifying the received radio frequency signal in a corresponding interference channel, and then filtering the amplified signal to obtain the deception interference signal.
And step S800, outputting the deception jamming signal through corresponding jamming channel radiation.
According to the interference signal generation method, the analysis data is obtained by obtaining and analyzing the interference parameter information, the suppression interference signal and the deception interference signal can be simultaneously generated according to the interference signal type in the analysis data, and finally the interference signal of the corresponding type is radiated and output through the corresponding channel. Through configuring different interference signal types according to the parameter setting information, an operator can perform parameter configuration according to actual requirements to simultaneously output interference signals with different functions, the configurability is high, the functions are complete, and various tests with high requirements can be met.
In one embodiment, after step S200, the method further comprises the step of storing the parsed data.
After the acquired interference parameter setting information is analyzed to obtain the analysis data, the analysis data is stored, and the method can be used for next generation of the interference signal, so that the convenience of the interference signal generation method is improved.
In one embodiment, after step S300, the method further comprises the step of storing the digital baseband interference signal.
After the digital baseband interference signal is generated, the generated digital baseband interference signal is stored, and the stored digital baseband interference signal can be used for the generation of the interference signal next time, so that the convenience of the interference signal generation method is improved.
In one embodiment, when the jamming signal type is a spoofed jamming signal type, as shown in fig. 3, a GNSS (Global navigation satellite system) active antenna array including an LNA (Low noise amplifier) is used to receive, amplify and filter the GNSS radio frequency signal. Specifically, the GNSS active antenna 171 is used to receive a GNSS radio frequency signal, output the GNSS radio frequency signal to the GNSS radio frequency amplifier 173 for amplification, and filter the amplified signal through the filter 175 to obtain a spoofed interference signal. The deception jamming signal can simulate a real complex electromagnetic environment, and can be applied to simulation of electromagnetic environments in industries such as communication electronic countermeasure, radio frequency spectrum management, unmanned aerial vehicles and the like.
In an embodiment, the spoofed interference signal includes a transponder-type spoofed interference signal, and as shown in fig. 4, the step S700 of obtaining the spoofed interference signal after amplifying and filtering the received radio frequency signal specifically includes steps S702 and S704.
Step S702, performing amplification and filtering on the received radio frequency signal, and performing time simulation on the amplified and filtered radio frequency signal.
After the GNSS active antenna array including an LNA (Low noise amplifier) receives, amplifies, and filters a GNSS radio frequency signal, an initial spoofing interference signal may be obtained, and in one embodiment, as shown in fig. 5, the initial spoofing interference signal is output to the digital controlled delayer 150, and time simulation is completed under the control of the delay controller 140.
Step S704, performing power simulation on the signal after the time simulation is completed, and obtaining a forwarding spoofing interference signal.
Specifically, as shown in fig. 5, the signal after the time simulation is completed is output to the digital controlled attenuator 170, the signal power simulation is completed under the control of the power controller 160, a forwarding spoofing interference signal is obtained, and finally the forwarding spoofing interference signal is amplified by the power amplifier to drive the GNSS passive antenna to emit the signal.
The forwarding type deception jamming signal is generated by adopting a digital-analog mixed mode, the control part adopts a digital mode, so that the control is simpler, the amplification, filtering and delay part adopts an analog mode, a signal with continuous characteristics can be output, and the advantages of both digital and analog are fully combined. In one embodiment, an analog type delayer can be used for generating the forwarding spoofing interference, and the numerical control delayer is simpler to control and has good precision.
In one embodiment, the digital baseband interference signal is a digital multi-tone baseband signal when the squelched interference signal type is a multi-tone interference signal type. As shown in fig. 6, the step S300 of generating the digital baseband interference signal and the radio frequency signal corresponding to the interference suppression signal according to the analytic data includes steps S302, S304, and S306.
Step S302, calculating a frequency control word according to the analytic data and generating a corresponding radio frequency signal.
According to the number, frequency point and other parameter information of the single tone interference in the analytic data, calculating a frequency control word according to the following calculation formula:
where cw (control word) is a frequency control word, Fout is an equivalent single-tone frequency, Fclk is an operating clock frequency of a corresponding Numerically Controlled Oscillator (NCO), and N is a bit width of a phase accumulator of the NCO. And generating corresponding radio frequency signals according to the number of single tone interference, frequency point and other parameter information in the analytic data.
Step S304, generating a corresponding single tone frequency according to the frequency control word.
As shown in fig. 7, since the multi-tone interference signal is implemented by a plurality of tone frequencies, when the corresponding tone frequency is generated, frequency control words respectively calculated according to information such as the number of tone interferences and frequency points are included in the corresponding frequency control table, and then the corresponding tone frequency is generated according to the frequency control table. Then, the numerically controlled oscillator is controlled by the frequency control table to generate the corresponding single tone frequency.
Step S306, synthesize the mono-tone frequency into a digital multi-tone baseband signal.
All the generated single-tone frequencies are added by an adder to synthesize a composite signal. As shown in fig. 7, the composite signal is a Digital multi-tone baseband signal, and the Digital multi-tone baseband signal is output to a DAC (Digital to analog converter), and the DAC converts the Digital multi-tone baseband signal into an analog mono-tone baseband signal; the GNSS passive antenna is arranged in a modulator according to parameter information, analog single-tone baseband signals and Local Oscillator (LO) radio frequency signals are mixed, and finally amplified by a power amplifier to drive the GNSS passive antenna to emit.
The manner of implementing the multi-tone interference is not exclusive, and in one embodiment, the multi-tone interference is implemented by generating a plurality of complex signals in a digital device through NCO, as shown in fig. 8, wherein a cosine cos part is used as a real part of the complex number, a sine sin part is used as an imaginary part of the complex number, and the complex signals are respectively added and synthesized inside an FPGA (Field Programmable Gate Array), and converted into an analog signal through DAC, the signal output from the real part is used as an I branch, and the signal output from the imaginary part is used as a Q branch, modulated by a modulator, amplified by a power amplifier, and finally radiated through GNSS antenna.
The manner of generating the single-tone interference is not exclusive, and in one embodiment, the single-tone interference of each frequency point center frequency is generated in a very low frequency sine wave manner. Under special conditions, single-tone interference as same as a specific frequency point needs to be generated, under the condition of a zero intermediate frequency modulation architecture, the direct current output of an I path output to an IQ modulator is required, and the output of a Q path is 0. The lowest frequency of the digital signal in the equivalent direct current mode is determined by the following formula:
Figure BDA0001464764570000101
the effect of the interfering signal is not affected at all.
In one embodiment, when the squelch signal type is fm interference signal type, the digital baseband interference signal is a digital fm baseband signal, as shown in fig. 9, and the step S300 of generating the digital baseband interference signal and the rf signal corresponding to the squelch signal according to the analysis data includes steps S308 and S310.
And step S308, setting a phase control table according to the analytic data and generating a corresponding radio frequency signal.
And setting an NCO (numerically controlled oscillator) phase control table according to parameters such as the type, bandwidth, speed and frequency point of frequency modulation interference in the analysis data, and generating a radio frequency signal of a corresponding type according to parameter information in the analysis data.
Step S310, generating a digital frequency modulation baseband signal according to the phase control table.
And generating a corresponding digital frequency modulation baseband signal according to the address content of the NCO phase control table.
In one embodiment, as shown in fig. 10, the fm type selector, fm rate selector, and fm bandwidth selector select the fm interference type, rate, and bandwidth information in the analytic data, and set an NCO phase control table; then, outputting the address content of the control table to an NCO, and generating a required frequency modulation signal by the NCO; the NCO outputs the digital frequency modulation baseband signal to the DAC, and the DAC converts the digital frequency modulation baseband signal into an analog frequency modulation baseband signal; setting a local oscillator to generate a corresponding radio frequency signal according to the parameter information; in the modulator, the analog frequency modulation baseband signal and the local oscillator LO radio frequency signal are mixed, and finally amplified by the power amplifier to drive the GNSS passive antenna to emit.
In one embodiment, the frequency modulation interference is generated by updating the phase control word of the NCO in real time. As shown in fig. 11, the specific process is as follows:
firstly, according to the information of bandwidth B, frequency modulation type P and the like in the set parameters, calculating to obtain the frequency modulation step length
Wherein, N is a fixed frequency modulation point number, P is an interference type, P ═ 1 is sawtooth wave frequency modulation, and P ═ 2 is triangular wave frequency modulation;
then generating NCO phase control words according to the sampling clock frequency, stepping and other parameters, so that the frequency range of NCO output is
Figure BDA0001464764570000111
Storing the phase control word into a lookup table LUT (lookup Table);
finally, according to the frequency modulation rate S and the interference type P of the set parameters, a frequency modulation rate counter FCNT is designed, the output of the counter is used as the input of the LUT, and the overflow value M of the counter is calculated by the following formula.
M＝clk/S
The counter runs from 0 to M-1, when P is 1, the counter counts in one direction, counts up from 0 to M-1 and then directly resets to 0 to restart counting up; when P is 2, the counter counts up and down, incrementing from 0 to M-1 and then decrementing to 0, and then restarting the incrementing.
Optionally, when the frequency modulation interference signal is generated, an analog mode may be adopted, but the interference signal has a narrow bandwidth and a complex parameter setting.
In one embodiment, when the squelch signal type is the band-limited white gaussian noise (gbu) interference signal type, the digital baseband interference signal is a digital fm baseband signal, as shown in fig. 12, and the step S300 of generating the digital baseband interference signal and the rf signal corresponding to the squelch signal according to the analytic data includes steps S312, S314, S316, and S318.
Step S312, generating gaussian noise according to the analytic data and generating a corresponding radio frequency signal.
And generating Gaussian noise according to information such as the type, bandwidth and interference number of the band-limited Gaussian white noise interference signal in the analysis data, and generating a radio frequency signal of a corresponding type according to parameter information in the analysis data.
In step S314, a noise signal is generated using gaussian noise.
After Gaussian noise is generated, an M sequence (maximum length linear shift feedback register sequence) is adopted to generate a noise signal, wherein the M sequence is the maximum length linear shift feedback register sequence.
In step S316, the noise signal is filtered to be used as a phase control table.
And generating interference by using the noise signal as a frequency-modulated baseband signal, and filtering the noise signal to be used as an address input signal of a phase control table.
Step S318, generating a digital fm baseband signal according to the phase control table.
And generating a corresponding digital frequency modulation baseband signal according to the address content of the phase control table.
In an embodiment, when the interference signal type is a suppressed interference signal type and when the suppressed interference signal type is a band-limited white gaussian noise interference signal type, as shown in fig. 13, the gaussian noise generator generates gaussian noise according to information such as the type, bandwidth, and interference number of the band-limited white gaussian noise interference signal, generates the gaussian noise as a noise signal by using an M sequence (maximum length linear shift feedback register sequence), generates interference by using the noise signal as a baseband signal for frequency modulation, and generates an interference signal as an address input signal of the phase control table after being filtered by an all-pass or narrow-band filter; setting an NCO phase control table; then, outputting the address content of the control table to an NCO to generate a required frequency modulation signal; the NCO is output to the DAC, and the digital frequency modulation baseband signal is converted into an analog frequency modulation baseband signal; setting a Local Oscillator (LO) to generate a corresponding radio frequency signal according to the parameter information; in the modulator, the analog frequency modulation baseband signal and the local oscillator LO radio frequency signal are mixed, and finally amplified by the power amplifier to drive the GNSS passive antenna to emit.
In one embodiment, a specific diagram of generating a band-limited white noise interference by using an M sequence as white noise and using a filter with configurable coefficients and simultaneously generating a plurality of narrow-band white noise interferences is shown in FIG. 14, where a total n-bit register a is an-1～a0All elements are driven by the same clock to perform operations such as shifting, etc., in the figure
Figure BDA0001464764570000121
The number is XOR operation, and the total number of n +1 coefficients Cn～C0The value range can only be 0 or 1.
Thus, the register update value formula for the (n-1) th bit is as follows:
wherein, C0＝CnIn the present invention, n is 32, C0＝C1＝C2＝C22＝C32The other coefficients take 0. The initial values of n-bit registers a are all set to be 1, the value of a is taken as an interference signal to generate interference after passing through a Band-Pass Filter (BPF), the bandwidth of the interference is controlled by a coefficient, and the bandwidth is variable when different coefficients are selected to be loaded, so that the bandwidth can be set.
The generation of the multiple narrow-band white noise interferences is realized by adding multiple NCO to generate different frequency points on the basis of the principle, and simultaneously outputting white noise with different frequencies. The M sequence n-bit register a outputs the delay register in parallel to form IQ two-path interference signals, which are mixed with x frequencies after passing through x different BPFs, i.e., I path is multiplied by I path, Q path is multiplied by Q path, and finally output to the next processing module through the DAC, as shown in fig. 15.
In one embodiment, when the muting interference signal type is the binary phase modulation BPSK interference signal type, the digital baseband interference signal is the digital BPSK baseband interference signal, as shown in fig. 16, and the step S300 of generating the digital baseband interference signal and the radio frequency signal corresponding to the muting interference signal according to the analysis data includes steps S320, S322, and S324.
Step S320, generating an enable signal according to the analytic data and generating a corresponding radio frequency signal.
And generating an enabling signal corresponding to the M sequence according to the information such as the frequency, the bandwidth and the like of the BPSK interference signal in the analysis data, and generating a radio frequency signal of a corresponding type according to the parameter information in the analysis data.
In step S322, an M-sequence is generated according to the enable signal and the generation formula.
And generating a corresponding M sequence according to the corresponding enabling signal and a generating formula, so that the M sequence can be used as an input modulation signal to generate a corresponding digital baseband interference signal.
In step S324, the M sequence is used as an input modulation signal to generate a digital BPSK baseband signal.
And multiplying the +/- (N-1) data by taking the M sequence as an input modulation signal, wherein N is the maximum output value of the digital-to-analog converter chip, and generating a digital BPSK baseband signal according to the modulation signal.
In one embodiment, when the interference signal type is a suppressed interference signal type and when the suppressed interference signal type is a binary phase modulation BPSK interference signal type, as shown in fig. 17, the bandwidth selector generates an enable signal required by the M sequence according to information such as frequency and bandwidth of the BPSK interference signal, the M sequence generator generates the M sequence according to a generation formula, and then the M sequence is used as an input modulation signal of the digital modulator to multiply ± (N-1) data; and N is the maximum output value of the DAC chip. The bit modulator outputs to the DAC, and the digital BPSK baseband signal is converted into an analog BPSK baseband signal; setting a Local Oscillator (LO) to generate a corresponding radio frequency signal according to the parameter information; in the modulator, the analog BPSK baseband signal and the local oscillator LO radio frequency signal are mixed, and finally amplified by the power amplifier to drive the GNSS passive antenna to emit.
In one embodiment, as shown in FIG. 18, a in an M-sequence n-bit register a0Is connected to the selection terminal of the selector when a0When it is 0, -M/2 is selected as output, when a0When the value is 1, the value is + M/2, and M is the maximum value of the DAC range.
In one embodiment, when the suppressed interference signal type is the PN code modulated interference signal type, the digital baseband interference signal is a digital PN baseband signal, as shown in fig. 19, and the step S300 of generating the digital baseband interference signal and the radio frequency signal corresponding to the suppressed interference signal according to the analysis data includes steps S326, S328 and S330.
In step S326, an enable signal is generated according to the parsed data and a corresponding radio frequency signal is generated.
And generating an enabling signal required by the M sequence according to information such as the frequency, the bandwidth and the like of the PN interference signal in the analysis data, and generating a radio frequency signal of a corresponding type according to parameter information in the analysis data.
In step S328, an M-sequence is generated according to the enable signal and the generation formula.
And generating a corresponding M sequence according to the corresponding enabling signal and a generating formula, so that the M sequence can be used as an input modulation signal to generate a corresponding digital baseband interference signal.
Step S330, generating a digital PN baseband signal according to the M sequence.
And (3) taking the signal generated by the last N bits of the M sequence as a digital PN baseband signal, wherein N is the digital-to-analog converter chip bit number.
In one embodiment, when the interference signal type is a suppressed interference signal type and when the suppressed interference signal type is a PN code modulation interference signal type, as shown in fig. 20, the enable generator generates an enable signal required by the M sequence according to information such as frequency and bandwidth of the PN interference signal; then the M sequence generator generates an M sequence according to a generation formula, and the last N bits of the M sequence are used as input signals of the DAC; and N is the DAC chip bit number. Converting the digital PN baseband signal into an analog PN baseband signal through a DAC; setting a Local Oscillator (LO) to generate a corresponding radio frequency signal according to the parameter information; in the modulator, the analog PN baseband signal and the local oscillator LO radio frequency signal are mixed, and finally amplified by the power amplifier to drive the GNSS passive antenna to emit.
In one embodiment, as shown in FIG. 21, take D bit a in an n-bit register of an M-sequenceD-1～a0And outputting the interference signals into a D bit selection delayer, forming two paths of interference signals with D bits, and outputting the two paths of interference signals to a DAC as an I path and a Q path respectively, wherein D-14 is the digital bus quantization bit number of the DAC chip. In the scheme, other digit numbers can be selected for the digit number D of the DAC, such as the digit number between 8 and 16, the 16-digit DAC has higher precision, but the volume, the power consumption and the cost are higher, and the resolution of the DAC below 14 digits is low. The DAC with 14 bits selected in the embodiment can reduce the size and power consumption on the premise of high resolutionAnd (4) cost.
Optionally, when generating the BPSK modulated interference signal and the PN code modulated interference signal, the M sequence may adopt different expressions and have different bits, and may also generate similar BPSK modulated interference signal and PN code modulated interference signal, and the principle is the same.
In one embodiment, as shown in fig. 22, the step S400 of performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal includes steps S402 and S404.
In step S402, a corresponding rectangular pulse signal is generated from the analysis data.
When the interference signal type is the interference signal suppression type, the interference signal suppression function is further provided for suppressing the interference signal, and a corresponding rectangular pulse signal is generated according to the information such as the width, the period and the precision of the pulse interference in the analysis data.
And S404, controlling the digital baseband interference signal to perform digital-to-analog conversion according to the rectangular pulse signal to obtain an analog baseband interference signal.
And controlling various interference suppression types to perform digital-to-analog conversion by using the generated rectangular pulse signal as an enabling switch, outputting each digital baseband interference signal to perform digital-to-analog conversion when the pulse signal is high, and not outputting each digital baseband interference signal when the pulse signal is low.
In one embodiment, when the interference signal type is the suppressed interference signal type, the suppressed interference signal also provides the impulse interference function, as shown in fig. 23, according to the information of the width, period, precision, etc. of the impulse interference, a corresponding rectangular pulse signal is generated, the rectangular pulse signal is used as a register set enable switch to control the data output by various suppressed interference signals to the DAC, when the pulse signal is high, the data is output to the DAC, and when the pulse signal is low, 0 is output. The digital baseband interference signal output to the DAC is converted into an analog baseband interference signal, a local oscillator LO is set according to parameter information to generate a corresponding radio frequency signal, the analog baseband interference signal and the local oscillator LO radio frequency signal are mixed in a modulator, and finally amplified by a power amplifier to drive a GNSS passive antenna to emit.
In one embodiment, the generation of the pulse interference signal can be realized by adopting a scheme that a radio frequency switch is adopted to control a radio frequency signal, an enabling end of a modulator, an enabling end of a radio frequency local oscillator and the like.
The generation of the suppressed interference signals is generated in a digital device, the suppressed interference signals have ultrahigh resolution in terms of amplitude, phase and time, interference waveforms can be reprogrammed and configured by an operator according to actual needs, and after the signals are stored in a memory, the operator can play back any interference waveform signals. The method can be widely applied to anti-interference performance evaluation, model approval, network access detection and verification test systems of satellite navigation products.
In one embodiment, the present invention further provides an interference signal generating apparatus, as shown in fig. 24, including an interface control module 10, a parsing module 20, a generating module 30, an amplifying module 40, and an output module 50.
The interface control module 10 is configured to obtain interference parameter setting information, and transmit the obtained interference parameter setting information to an interference source. The operating personnel can pass through interface control module 10 with various control information, set up the parameter and transmit to the interference source in, operating personnel's accessible computer disposes interference parameter setting information by oneself, information such as frequency point and power of each kind of interference signal all can be disposed, can programme and dispose arbitrary frequency point function, the interface mode of setting up the parameter can adopt USB, net gape and ordinary serial ports etc. in this embodiment, adopt the mode of ordinary serial ports, use ordinary common serial ports can accomplish all controls, and control is convenient, and the cost is lower.
The parsing module 20 is configured to parse the interference parameter setting information to obtain parsed data, in an embodiment, the interface control module 10 transmits the obtained interference parameter setting information to the parsing module 20, specifically, parses the parameter through an interference source, reformats the parameter and packages the parameter to obtain parsed data, in an embodiment, as shown in fig. 10, the parsing module 20 includes a parameter setting module 22, the interference source parses the parameter and distributes the obtained parsed data to the parameter setting module 22 according to the functions of the type, number, power size, and the like of the interference signal, and the parameter setting module 22 is configured to distribute the interference parameter setting information to a corresponding interference channel according to the functions of the type, number, power size, and the like of the interference signal.
In one embodiment, the parsing module 20 is further configured to store the parsing parameters, and in one embodiment, the memory may be a nonvolatile memory, and the nonvolatile memory may store the parsing parameters after the interference source is powered off, and may read and use the last stored parameters for setting when the computer is turned on next time.
The generating module 30 is configured to generate the interference signal of the corresponding type according to the analytic data. In one embodiment, the interference channels are classified into two broad categories, jamming and spoofing, depending on the type of interfering signal. The squelch is generated inside the interference source, and the deceptive interference is divided into two types, namely, a forward deceptive interference and a generative deceptive interference. And each channel adopts a separate reference clock, so that the independent generation of interference signals is realized, and all channels operate independently.
In one embodiment, as shown in FIG. 25, the parallel output of multiple channels can be realized by expansion, the number of multiple channels is N, N ≧ 1, wherein the deceptive jamming channel can be expanded from the F1 channel to the Fx channel, x ≧ 2, and the victim jamming channel can be expanded from the J1 channel to the Jx channel, x ≧ 2.
The amplifying module 40 is configured to amplify the interference signal, and in one embodiment, as shown in fig. 25, each interference channel is configured with a power amplifier, and the interference signal in the interference channel is output to a separate power amplifier for amplification.
The output module 50 is configured to output the amplified interference signal in a corresponding channel by radiation, in an embodiment, as shown in fig. 11, each interference channel is configured with a GNSS (Global Navigation Satellite System) antenna, and the interference signal is amplified by a power amplifier, and then drives the GNSS antenna to output the interference signal by radiation.
In one embodiment, as shown in fig. 25, the number P1x of the power amplifier of the forwarding interference channel is the number A1x of the GNSS antenna, and x is greater than or equal to 1; the number of the generated interference channel power amplifier P2x and the number of the matched GNSS antenna A2x are more than or equal to 1.
The interference signal generating device obtains interference parameter setting information through the interface control module 10, the analysis module 20 analyzes the obtained interference parameter setting information to obtain analysis data, then the generation module 30 generates interference parameters of corresponding types according to the analysis data, then the amplification module 40 amplifies the interference signals, and finally the output module 40 outputs the amplified interference signals in corresponding interference channels in a radiation manner. By generating the interference parameters of the corresponding types according to the analysis data in the analysis module 20, an operator can perform parameter configuration according to actual requirements to realize multi-channel parallel output of interference signals with different functions, so that a global satellite navigation system can be covered by a single device, the functions are complete, and the function comprehensiveness of the interference signal generation device is improved.
In an embodiment, the generating module 30 includes a pulse control module, and the pulse control module is configured to generate a corresponding rectangular pulse signal according to the analysis data, and control the digital baseband interference signal to perform digital-to-analog conversion according to the rectangular pulse signal to obtain an analog baseband interference signal. The pulse control module can configure the interference signal in the output frequency band, provide the pulse interference function and improve the function comprehensiveness of the interference signal generating device.
In an embodiment, the interference signal generating apparatus further includes a storage module 60, as shown in fig. 27, the storage module 60 is configured to store the generated interference signal, and in an embodiment, the storage module 60 may be a Random-access memory (RAM), and the RAM may store the generated interference signal at any time, and has a fast access speed, and can be taken out or stored at any time as needed, so that the operation convenience of the interference signal generating apparatus is improved.
In one embodiment, a computer device is provided, which may be a terminal. The computer device comprises a processor and a memory, the memory storing a computer program which, when executed by the processor, causes the processor to perform the steps of: acquiring interference parameter setting information; analyzing the interference parameter setting information to obtain analysis data, wherein the analysis data comprises interference signal types; when the interference signal type is a suppressed interference signal type, generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data; performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal; mixing the analog baseband interference signal with a corresponding radio frequency signal to obtain a corresponding type of suppressed interference signal; respectively amplifying the suppression interference signals, and outputting the amplified suppression interference signals through corresponding interference channels in a radiation manner; when the interference signal type is a deception interference signal type, amplifying and filtering the received radio frequency signal to obtain a deception interference signal; and radiating and outputting the deception jamming signals through the corresponding jamming channels.
In one embodiment, the spoofed interfering signal comprises a transponder spoofed interfering signal, and the computer program further causes the processor to perform the following steps for amplifying and filtering the received radio frequency signal to obtain the spoofed interfering signal: amplifying and filtering the received radio frequency signal, and performing time simulation on the amplified and filtered radio frequency signal; and performing power simulation on the signal after the time simulation is completed to obtain a forwarding type deception jamming signal.
In one embodiment, when the squelched interference signal type is a multi-tone interference signal type, the digital baseband interference signal is a digital multi-tone baseband signal; for the step of generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal from the parsed data, the computer program further causes the processor to perform the steps of: calculating a frequency control word according to the analytic data and generating a corresponding radio frequency signal; generating a corresponding single tone frequency according to the frequency control word; the monophonic frequencies are synthesized into a digital polyphonic baseband signal.
In one embodiment, when the squelch signal type is fm interference signal type, the digital baseband interference signal is a digital fm baseband signal; for the step of generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal from the parsed data, the computer program further causes the processor to perform the steps of: setting a phase control table according to the analytic data and generating a corresponding radio frequency signal; and generating a digital frequency modulation baseband signal according to the phase control table.
In one embodiment, when the suppressed interference signal type is a band-limited white gaussian noise interference signal type, the digital baseband interference signal is a digital frequency modulation baseband signal; for the step of generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal from the parsed data, the computer program further causes the processor to perform the steps of: generating Gaussian noise according to the analytic data and generating a corresponding radio frequency signal; generating a noise signal by using Gaussian noise; filtering the noise signal to obtain a phase control table; and generating a digital frequency modulation baseband signal according to the phase control table.
In one embodiment, when the victim interference signal type is a binary phase modulated BPSK interference signal type, the digital baseband interference signal is a digital BPSK baseband interference signal, and for the step of generating the digital baseband interference signal and the radio frequency signal corresponding to the victim interference signal from the parsed data, the computer program further causes the processor to perform the steps of: generating an enabling signal according to the analysis data and generating a corresponding radio frequency signal; generating an M sequence according to the enabling signal and a generating formula; the M sequence is used as an input modulation signal to generate a digital BPSK baseband signal.
In one embodiment, when the suppressed interference signal type is a PN code modulated interference signal type, the digital baseband interference signal is a digital PN baseband signal, and for the step of generating the digital baseband interference signal and the radio frequency signal corresponding to the suppressed interference signal from the analytic data, the computer program further causes the processor to perform the steps of: generating an enabling signal according to the analysis data and generating a corresponding radio frequency signal; generating an M sequence according to the enabling signal and a generating formula; generating digital PN baseband signals from M sequences
In one embodiment, for the step of performing a digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal, the computer program further causes the processor to perform the steps of: generating a corresponding rectangular pulse signal according to the analytic data; and controlling the digital baseband interference signal to perform digital-to-analog conversion according to the rectangular pulse signal to obtain an analog baseband interference signal.
The computer equipment obtains and analyzes the interference parameter setting information to obtain analysis data, can simultaneously generate a suppression interference signal and a deception interference signal according to the type of the interference signal in the analysis data, and finally outputs the interference signal of the corresponding type through the radiation of the corresponding interference channel. By configuring different interference signal types according to the interference parameter setting information, an operator can perform parameter configuration according to actual requirements to simultaneously output interference signals with different functions.
In one embodiment, a computer readable storage medium is provided, the computer readable storage medium storing a computer program that, when executed by a processor, causes the processor to perform the steps of: acquiring interference parameter setting information; analyzing the interference parameter setting information to obtain analysis data, wherein the analysis data comprises interference signal types; when the interference signal type is a suppressed interference signal type, generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data; performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal; mixing the analog baseband interference signal with a corresponding radio frequency signal to obtain a corresponding type of suppressed interference signal; respectively amplifying the suppression interference signals, and outputting the amplified suppression interference signals through corresponding interference channels in a radiation manner; when the interference signal type is a deception interference signal type, amplifying and filtering the received radio frequency signal to obtain a deception interference signal; and radiating and outputting the deception jamming signals through the corresponding jamming channels.
In one embodiment, the spoofed interfering signal comprises a transponder-type spoofed interfering signal, and the received radio frequency signal is amplified and filtered to obtain the spoofed interfering signal, and when the computer program is executed by the processor, the computer program further causes the processor to perform the following steps: amplifying and filtering the received radio frequency signal, and performing time simulation on the amplified and filtered radio frequency signal; and performing power simulation on the signal after the time simulation is completed to obtain a forwarding type deception jamming signal.
In one embodiment, when the squelched interference signal type is a multi-tone interference signal type, the digital baseband interference signal is a digital multi-tone baseband signal; for the step of generating the digital baseband interference signal and the radio frequency signal corresponding to the suppressed interference signal from the parsed data, when the computer program is executed by the processor, the computer program further causes the processor to perform the steps of: calculating a frequency control word according to the analytic data and generating a corresponding radio frequency signal; generating a corresponding single tone frequency according to the frequency control word; the monophonic frequencies are synthesized into a digital polyphonic baseband signal.
In one embodiment, when the squelch signal type is fm interference signal type, the digital baseband interference signal is a digital fm baseband signal; for the step of generating the digital baseband interference signal and the radio frequency signal corresponding to the suppressed interference signal from the parsed data, when the computer program is executed by the processor, the computer program further causes the processor to perform the steps of: setting a phase control table according to the analytic data and generating a corresponding radio frequency signal; and generating a digital frequency modulation baseband signal according to the phase control table.
In one embodiment, when the suppressed interference signal type is a band-limited white gaussian noise interference signal type, the digital baseband interference signal is a digital frequency modulation baseband signal; for the step of generating the digital baseband interference signal and the radio frequency signal corresponding to the suppressed interference signal from the parsed data, when the computer program is executed by the processor, the computer program further causes the processor to perform the steps of: generating Gaussian noise according to the analytic data and generating a corresponding radio frequency signal; generating a noise signal by using Gaussian noise; filtering the noise signal to obtain a phase control table; and generating a digital frequency modulation baseband signal according to the phase control table.
In one embodiment, when the squelch signal type is a binary phase modulation BPSK interference signal type, the digital baseband interference signal is a digital BPSK baseband interference signal, and for the step of generating the digital baseband interference signal and the radio frequency signal corresponding to the squelch signal from the parsed data, the computer program when executed by the processor further causes the processor to perform the steps of: generating an enabling signal according to the analysis data and generating a corresponding radio frequency signal; generating an M sequence according to the enabling signal and a generating formula; the M sequence is used as an input modulation signal to generate a digital BPSK baseband signal.
In one embodiment, when the squelched interference signal type is a PN code modulated interference signal type, the digital baseband interference signal is a digital PN baseband signal, and for the step of generating the squelched interference signal and the rf signal corresponding to the squelched interference signal from the parsed data, the computer program, when executed by the processor, further causes the processor to perform the steps of: generating an enabling signal according to the analysis data and generating a corresponding radio frequency signal; generating an M sequence according to the enabling signal and a generating formula; generating digital PN baseband signals from M sequences
In an embodiment, for the step of digital-to-analog converting the digital baseband interference signal into an analog baseband interference signal, the computer program, when executed by the processor, further causes the processor to perform the steps of: generating a corresponding rectangular pulse signal according to the analytic data; and controlling the digital baseband interference signal to perform digital-to-analog conversion according to the rectangular pulse signal to obtain an analog baseband interference signal.
The storage medium obtains analysis data by obtaining and analyzing the interference parameter setting information, can simultaneously generate a suppression interference signal and a deception interference signal according to the interference signal type in the analysis data, and finally outputs the interference signal of the corresponding type through the corresponding interference channel radiation. By configuring different interference signal types according to the interference parameter setting information, an operator can perform parameter configuration according to actual requirements to simultaneously output interference signals with different functions.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A method for generating an interference signal, comprising:
acquiring interference parameter setting information;
analyzing the interference parameter setting information to obtain analysis data, wherein the analysis data comprises interference signal types;
when the interference signal type is a suppressed interference signal type, generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data;
performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal;
mixing the analog baseband interference signal with the corresponding radio frequency signal to obtain a suppressed interference signal of a corresponding type;
amplifying the suppression interference signals respectively, and outputting the amplified suppression interference signals through corresponding interference channels in a radiation manner;
when the interference signal type is a deception interference signal type, amplifying and filtering the received radio frequency signal to obtain a deception interference signal;
the deception jamming signal is radiated and output through a corresponding jamming channel;
the suppressed interference signal comprises a multi-tone interference signal, a frequency modulation interference signal, a band-limited white Gaussian noise interference signal, a BPSK modulation interference signal or a PN code modulation interference signal; generating corresponding interference signals by respectively setting corresponding channels according to the type and the number of the self-set interference suppression signals; each interference suppression signal is generated in a channel corresponding to the type of the interference suppression signal, and each interference channel operates independently, so that the interference signals are generated independently.
2. The method of claim 1, wherein the spoofed interfering signal comprises a transponder spoofed interfering signal, and the received rf signal is amplified and filtered to obtain the spoofed interfering signal, comprising:
amplifying and filtering the received radio frequency signal, and performing time simulation on the amplified and filtered radio frequency signal;
and performing power simulation on the signal after the time simulation is completed to obtain a forwarding type deception jamming signal.
3. The jamming signal generating method according to claim 1, wherein when the squelched jamming signal type is a multi-tone jamming signal type, the digital baseband jamming signal is a digital multi-tone baseband signal; generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data comprises:
calculating a frequency control word according to the analytic data and generating a corresponding radio frequency signal;
generating a corresponding single tone frequency according to the frequency control word;
frequency synthesizing the single tone into a digital multi-tone baseband signal.
4. The jamming signal generating method according to claim 1, wherein when the squelch jamming signal type is an fm jamming signal type, the digital baseband jamming signal is a digital fm baseband signal; generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data comprises:
setting a phase control table according to the analytic data and generating a corresponding radio frequency signal;
and generating a digital frequency modulation baseband signal according to the phase control table.
5. The jamming signal generating method according to claim 1, wherein when the squelch jamming signal type is a band-limited white gaussian noise jamming signal type, the digital baseband jamming signal is a digital frequency modulation baseband signal; generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data comprises:
generating Gaussian noise according to the analytic data and generating a corresponding radio frequency signal;
generating a noise signal using the gaussian noise;
filtering the noise signal to be used as a phase control table;
and generating a digital frequency modulation baseband signal according to the phase control table.
6. The method of claim 1, wherein performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal comprises:
generating a corresponding rectangular pulse signal according to the analytic data;
and controlling the digital baseband interference signal to perform digital-to-analog conversion according to the rectangular pulse signal to obtain an analog baseband interference signal.
7. An interference signal generation apparatus, comprising:
the interface control module is used for acquiring interference parameter setting information;
the analysis module is used for analyzing the interference parameter setting information to obtain analysis data; the analytic data comprises interference signal types;
the generating module is used for generating interference signals of corresponding types according to the analysis data; when the interference signal type is a suppressed interference signal type, generating a digital baseband interference signal and a radio frequency signal corresponding to the suppressed interference signal according to the analysis data; performing digital-to-analog conversion on the digital baseband interference signal to obtain an analog baseband interference signal; mixing the analog baseband interference signal with the corresponding radio frequency signal to obtain a suppressed interference signal of a corresponding type; when the interference signal type is a deception interference signal type, amplifying and filtering the received radio frequency signal to obtain a deception interference signal;
the amplification module is used for amplifying the interference signal;
the output module is used for outputting the amplified interference signals in a radiation mode in the corresponding channels;
the suppressed interference signal comprises a multi-tone interference signal, a frequency modulation interference signal, a band-limited white Gaussian noise interference signal, a BPSK modulation interference signal or a PN code modulation interference signal; generating corresponding interference signals by respectively setting corresponding channels according to the type and the number of the self-set interference suppression signals; each interference suppression signal is generated in a channel corresponding to the type of the interference suppression signal, and each interference channel operates independently, so that the interference signals are generated independently.
8. The interference signal generating apparatus according to claim 7, further comprising:
and the pulse control module is used for generating a corresponding rectangular pulse signal according to the analytic data and controlling the digital baseband interference signal to perform digital-to-analog conversion according to the rectangular pulse signal to obtain an analog baseband interference signal.
9. A computer device comprising a processor and a memory, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of the method of any one of claims 1 to 6.
10. A computer-readable storage medium, storing a computer program which, when executed by a processor, causes the processor to perform the steps of the method of any one of claims 1 to 6.
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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109039525A (en) * 2018-06-04 2018-12-18 成都大公博创信息技术有限公司 A kind of unmanned aerial vehicle radio disturbance suppression method and system
CN109274627B (en) * 2018-11-19 2021-05-11 上海航天测控通信研究所 Ka frequency band QPSK direct modulation device and communication equipment
CN110971489A (en) * 2019-12-04 2020-04-07 盛科网络（苏州）有限公司 Simulation test method and device for variable deflection based on simulation clock generator
CN111474523B (en) * 2020-04-07 2023-06-30 南京理工大学 Multichannel extensible universal deception jamming simulation method and system
CN111555837B (en) * 2020-04-13 2023-06-27 安徽白鹭电子科技有限公司 Ultra-short wave communication self-adaptive interference method and system
CN111970082A (en) * 2020-07-08 2020-11-20 北京航天华腾科技有限公司 Interference signal generating device and interference signal source equipment
CN111970083B (en) * 2020-07-08 2022-04-08 北京航天华腾科技有限公司 Interference signal generating device and method and interference signal source equipment
CN116400311B (en) * 2023-06-07 2023-09-19 清华大学 Radar interference simulation method and device based on generation countermeasure network and electronic equipment

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4548954B2 (en) * 2001-03-09 2010-09-22 株式会社日立国際電気 Interference signal canceller
CN101349740B (en) * 2008-07-29 2011-09-07 北京航空航天大学 General-purpose satellite navigation signal interference source and method for generating signal thereof
CN102916752A (en) * 2012-05-07 2013-02-06 中国人民解放军国防科学技术大学 Automatic generation method and device of complex interference
CN103312347B (en) * 2013-05-21 2015-08-12 成都国星通信有限公司 A kind of multichannel interference signal generation device and interference signal production method
CN103675772B (en) * 2013-11-26 2015-11-04 北京宇航系统工程研究所 A kind of Multifunctional SAR complex electromagnetic environment simulator
CN105657727B (en) * 2014-12-03 2019-04-05 中国移动通信集团江苏有限公司 The determination method and device thereof of interference signal interference type
CN104901719B (en) * 2015-04-10 2017-04-05 北京航空航天大学 A kind of common satellite interference signal generation method
CN106501782B (en) * 2016-10-14 2019-01-04 湖南鼎方量子科技有限公司 A kind of multichannel satellite navigation and interference signal simulation source and signal imitation method
CN106646540A (en) * 2016-12-23 2017-05-10 上海创远仪器技术股份有限公司 Integrated desk-type signal simulation platform for satellite navigation anti-interference test, and application method for integrated desk-type signal simulation platform
CN106680852B (en) * 2017-03-20 2019-02-12 武汉大地线科技有限公司 Localization method and system based on satellite navigation signals Deceiving interference
CN107238847A (en) * 2017-04-21 2017-10-10 中国科学院光电研究院 A kind of satellite navigation interferer signal detection method and system
CN107271970B (en) * 2017-09-04 2019-05-21 电子科技大学 A kind of radar co-interfere method based on distributed platform

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