CN117805739B - Wave control signal processing equipment and method - Google Patents
Wave control signal processing equipment and method Download PDFInfo
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
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Abstract
The invention discloses a wave control signal processing device and a wave control signal processing method, wherein the processing method comprises the following steps: s1: establishing a phased array wave-controlled radar antenna array; generating initial waveform parameters by a central computer, and establishing a phase distribution range; according to the number N of the sub-radar antenna arrays, matching an optimal phase value for each sub-radar antenna array by using a phase-distribution algorithm in a phase-distribution range; and inputting the optimal phase value corresponding to each sub-radar antenna array into a phase machine, wherein the optimal phase value is used as the phase matching value of the radar antenna unit transmitting wave beam in each sub-radar antenna array. The device for executing the processing method comprises the following steps: the system comprises a central computer, a wave control system, a wave control machine and a phased array wave controlled radar antenna array. The scheme firstly obtains enough and different phase values by establishing a reasonable phase distribution range and by a random value taking mode, and then generates an optimal phase value in the phase distribution range by utilizing a mutation, crossing and screening mode, thereby being a phase value generation method with high efficiency and high fault tolerance.
Description
Technical Field
The invention relates to the technical field of radar signal processing, in particular to wave control signal processing equipment and a wave control signal processing method.
Background
The phased array radar controls the phase of each unit in the array antenna through the wave control system to complete the electric control scanning of the antenna beam, and has the characteristics of rapidness and flexibility in scanning. The wave control system plays a vital role as a core system for controlling beam pointing of the phased array radar. The general beam control system should have the following functions: phase control, synchronization control, data transmission, BITE (fault detection). With the continuous innovation and development of radar technology, auxiliary functions such as random phase feeding, antenna feeder phase error correction, beam pointing correction of an antenna after agility, detection of working phase and beam shape change of a phase shifter, near field test and the like can be expanded according to specific requirements. The design requirements of the phased array radar on the wave control system are as follows: the system can complete the functions given by the system, meet the requirements of rapid scanning of antenna beams, have small volume and light weight, use as few devices as possible, have simple signal connection and the like.
The planar phased array antenna often contains a large number of antenna units, and for this case, a distributed wave control scheme needs to be adopted to divide the whole antenna array surface into a plurality of subarrays, and each subarray is specially used for carrying out operation and fault detection on the phase shift quantity of the antenna units in the subarray by using a wave control machine, so that the operation time can be greatly reduced, and the requirement of rapid scanning of antenna beams is met.
The phased array wave control technology can realize the directivity adjustment of the transmitted and received signals by changing the phase difference between the antenna units, thereby realizing the accurate positioning and tracking of the target. In the prior art, phase values are taken among different antenna units in a uniform increasing mode, so that the phase shift value of the last antenna unit is overlarge, the phase shift of the signal is overlarge, the phase noise is increased, and the spectral characteristics of the signal are affected; and can cause distortion and interference of the signal, thereby affecting the quality and reliability of the communication.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides wave control signal processing equipment and a wave control signal processing method, which solve the defects that the phased array radar array in the prior art calculates different phase values too much to influence signal quality.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
There is provided a wave control signal processing method including the steps of:
S1: establishing a phased array wave-controlled radar antenna array, wherein the radar antenna array comprises N sub-radar antenna arrays, each sub-radar antenna array comprises N radar antenna units, and each sub-radar antenna array is correspondingly provided with a wave control machine;
s2: the central computer generates initial waveform parameters, generates initial phase values X 1 of each sub-radar antenna array according to the initial waveform parameters, and generates initial phase values X 1 of each sub-radar antenna array according to allowable phase fluctuation values in the radar antenna arrays Establishing a phase distribution range；
S3: according to the number N of the sub-radar antenna arrays, the phase distribution range is definedMatching an optimal phase value for each sub-radar antenna array by using a phase distribution algorithm;
S4: and inputting the optimal phase value corresponding to each sub-radar antenna array into a phase machine, wherein the optimal phase value is used as the phase matching value of the radar antenna unit transmitting wave beam in each sub-radar antenna array.
Further, step S3 includes:
s31: according to the number N of the sub-radar antenna arrays, the phase fluctuation range Splitting into N phase value intervals with equal length, selecting N phase values in each phase value interval, wherein the phase value interval is used as the length of one chromosome, and the phase value is used as a gene in the chromosome;
S32: binarizing the phase value corresponding to each gene to obtain binary code corresponding to each gene, according to the set mutation rate eta, Randomly mutating the code within each binary code,/>A is the number of codes requiring mutation in a binary code, A is the total number of codes in the binary code;
S33: obtaining mutation genes according to binary codes after mutation, wherein one mutation gene corresponds to one mutation phase value, the mutation phase value is differenced from an initial phase value X 1, the absolute value is taken, a mutation phase shift value is obtained, and the mutation phase value is input into an initial waveform parameter to form a mutation waveform parameter;
Judging whether the phase noise Z 1 of the abrupt waveform parameter exceeds a noise threshold value; if yes, judging that the mutation of the mutant gene fails, and executing step S34; otherwise, step S36 is performed;
s34: returning to step S31, randomly selecting a gene again in the corresponding chromosome, and ensuring that the newly selected gene is different from the selected gene;
S35: until the n genes in each chromosome are successfully mutated, the successfully mutated genes are inherited to the next generation, and mutant chromosomes are formed;
S36: the cross substitution rate k is set and, Cross-substituting the coding of each mutant gene in the mutant chromosome according to the cross-substitution rate k,/>B is the number of codes in one gene that need cross substitution, and B is the total number of codes in one gene;
S37: after the cross replacement is completed, each mutant gene is transformed into a cross gene, the cross genes form a cross chromosome, one cross gene corresponds to one cross phase value, the cross phase value is differenced from the initial phase value X 1, and then the absolute value is taken to obtain a cross phase shift value;
S38: inputting the cross phase value into the abrupt waveform parameter to form the cross waveform parameter; comparing the phase noise Z 2 of the cross waveform parameter with the phase noise Z 1 before cross substitution, if Z 2＞Z1, judging that the gene cross substitution fails, and executing step S39; otherwise, if Z 2≤Z1, determining that the gene crossover replacement is successful, and executing step S311;
s39: returning to step S36, re-selecting additional genes within the chromosome for coding crossover replacement;
S310: until each gene in the chromosome is successfully crossed and replaced, the mutant gene is crossed and replaced by a crossed gene;
S311: extracting all cross genes successfully replaced by cross to form a cross chromosome; inputting a cross waveform parameter according to a cross phase value corresponding to each cross gene in the cross chromosome, and extracting corresponding phase noise Z 2;
S312: obtaining the cross phase value of the corresponding cross genes in each cross chromosome, and establishing phase noise data sets corresponding to n cross genes in the cross chromosome by taking each cross chromosome as a unit Obtaining phase noise data sets/>, corresponding to the N crossed chromosomes，/>Screening each phase noise data set for phase noise corresponding to the nth crossover gene in each crossover chromosomeInternal phase noise minimum/>Phase noise minimum/>The corresponding cross phase value is the optimal phase value of the sub-radar antenna array.
Further, the calculation model of the noise threshold V in is:
；
Wherein, For the closed loop response of the wave control signal transmission, f is the relation coefficient of phase noise and closed loop response,/>Allowed phase noise for the beam corresponding to the initial waveform parameters,/>For initial phase value,/>As a transfer function of the initial phase value,/>As a function of the frequency response of the amplitude to the initial phase.
There is provided a wave control signal processing apparatus that performs the above-described wave control signal processing method, including: the system comprises a central computer, a wave control system, a wave control machine and a phased array wave control radar antenna array, wherein the wave control system comprises a phase value generation module, an interface module and a BITE module and is used for generating an optimal phase value and sending the optimal phase value to the wave control machine.
The beneficial effects of the invention are as follows: according to the scheme, the wave control signal is processed through the established wave control system, the phase value of each antenna unit to be changed is ensured to be in a reasonable range aiming at the phased array wave controlled radar antenna array, and particularly, the operation time is greatly reduced aiming at a large number of radar antenna units, the requirement of rapid scanning of the antenna beam is met, and the purpose of controlling the whole antenna beam is achieved. According to the scheme, a reasonable phase distribution range is established, sufficient and different phase values are obtained in a random value taking mode, and an optimal phase value is generated in the phase distribution range by utilizing mutation, intersection and screening modes, so that the method is an efficient phase value generation method with high fault tolerance; the method and the device ensure that the signal quality and the reliability are effectively improved, and the stability of radar communication is ensured.
Drawings
Fig. 1 is a flowchart of a method for processing a wave control signal.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
As shown in fig. 1, the wave control signal processing method of the present solution includes the following steps:
S1: establishing a phased array wave-controlled radar antenna array, wherein the radar antenna array comprises N sub-radar antenna arrays, each sub-radar antenna array comprises N radar antenna units, and each sub-radar antenna array is correspondingly provided with a wave control machine;
s2: the central computer generates initial waveform parameters, generates initial phase values X 1 of each sub-radar antenna array according to the initial waveform parameters, and generates initial phase values X 1 of each sub-radar antenna array according to allowable phase fluctuation values in the radar antenna arrays Establishing a phase distribution range；
The central computer of the radar unit sends corresponding frequency codes, wave position codes, wave beam broadening codes and the like to the wave control system, the parameters such as the frequency codes, the wave position codes, the wave beam broadening codes, initial phase values and the like are used as initial waveform parameters, and the wave control system calculates the phase values required to be changed of each antenna unit through integration in cooperation with temperature information sensed by a temperature sensor near the phase shifter. And adding the changed phase value and the initial phase value, finally converting the result into a binary code and latching, and finally driving the latching result into a phase shifter of the radar antenna unit according to the instruction to complete one-time phase arrangement.
S3: according to the number N of the sub-radar antenna arrays, the phase distribution range is definedMatching an optimal phase value for each sub-radar antenna array by using a phase distribution algorithm;
the step S3 comprises the following steps:
s31: according to the number N of the sub-radar antenna arrays, the phase fluctuation range Splitting into N phase value intervals with equal length, selecting N phase values in each phase value interval, wherein the phase value interval is used as the length of one chromosome, and the phase value is used as a gene in the chromosome;
S32: binarizing the phase value corresponding to each gene to obtain binary code corresponding to each gene, according to the set mutation rate eta, Randomly mutating the code within each binary code,/>A is the number of codes requiring mutation in a binary code, A is the total number of codes in the binary code;
S33: obtaining mutation genes according to binary codes after mutation, wherein one mutation gene corresponds to one mutation phase value, the mutation phase value is differenced from an initial phase value X 1, the absolute value is taken, a mutation phase shift value is obtained, and the mutation phase value is input into an initial waveform parameter to form a mutation waveform parameter;
Judging whether the phase noise Z 1 of the abrupt waveform parameter exceeds a noise threshold value; if yes, judging that the mutation of the mutant gene fails, and executing step S34; otherwise, step S36 is performed;
s34: returning to step S31, randomly selecting a gene again in the corresponding chromosome, and ensuring that the newly selected gene is different from the selected gene;
S35: until the n genes in each chromosome are successfully mutated, the successfully mutated genes are inherited to the next generation, and mutant chromosomes are formed;
S36: the cross substitution rate k is set and, Cross-substituting the coding of each mutant gene in the mutant chromosome according to the cross-substitution rate k,/>B is the number of codes in one gene that need cross substitution, and B is the total number of codes in one gene;
S37: after the cross replacement is completed, each mutant gene is transformed into a cross gene, the cross genes form a cross chromosome, one cross gene corresponds to one cross phase value, the cross phase value is differenced from the initial phase value X 1, and then the absolute value is taken to obtain a cross phase shift value;
S38: inputting the cross phase value into the abrupt waveform parameter to form the cross waveform parameter; comparing the phase noise Z 2 of the cross waveform parameter with the phase noise Z 1 before cross substitution, if Z 2＞Z1, judging that the gene cross substitution fails, and executing step S39; otherwise, if Z 2≤Z1, determining that the gene crossover replacement is successful, and executing step S311;
s39: returning to step S36, re-selecting additional genes within the chromosome for coding crossover replacement;
S310: until each gene in the chromosome is successfully crossed and replaced, the mutant gene is crossed and replaced by a crossed gene;
S311: extracting all cross genes successfully replaced by cross to form a cross chromosome; inputting a cross waveform parameter according to a cross phase value corresponding to each cross gene in the cross chromosome, and extracting corresponding phase noise Z 2;
S312: obtaining the cross phase value of the corresponding cross genes in each cross chromosome, and establishing phase noise data sets corresponding to n cross genes in the cross chromosome by taking each cross chromosome as a unit Obtaining phase noise data sets/>, corresponding to the N crossed chromosomes，/>Screening each phase noise data set for phase noise corresponding to the nth crossover gene in each crossover chromosomeInternal phase noise minimum/>Phase noise minimum/>The corresponding cross phase value is the optimal phase value of the sub-radar antenna array.
The calculation model of the noise threshold V in is:
；
Wherein, For the closed loop response of the wave control signal transmission, f is the relation coefficient of phase noise and closed loop response,/>Allowed phase noise for the beam corresponding to the initial waveform parameters,/>For initial phase value,/>As a transfer function of the initial phase value,/>As a function of the frequency response of the amplitude to the initial phase.
S4: and inputting the optimal phase value corresponding to each sub-radar antenna array into a phase machine, wherein the optimal phase value is used as the phase matching value of the radar antenna unit transmitting wave beam in each sub-radar antenna array.
A wave control signal processing apparatus that performs the above wave control signal processing method, comprising: the system comprises a central computer, a wave control system, a wave control machine and a phased array wave control radar antenna array, wherein the wave control system comprises a phase value generation module, an interface module and a BITE module and is used for generating an optimal phase value and sending the optimal phase value to the wave control machine.
According to the scheme, the wave control signal is processed through the established wave control system, the phase value of each antenna unit to be changed is ensured to be in a reasonable range aiming at the phased array wave controlled radar antenna array, and particularly, the operation time is greatly reduced aiming at a large number of radar antenna units, the requirement of rapid scanning of the antenna beam is met, and the purpose of controlling the whole antenna beam is achieved. The scheme firstly obtains enough and different phase values by establishing a reasonable phase distribution range and by a random value taking mode, and then generates an optimal phase value in the phase distribution range by utilizing a mutation, crossing and screening mode, thereby being a phase value generation method with high efficiency and high fault tolerance.
Claims (2)
1. A wave control signal processing method is characterized by comprising the following steps:
S1: establishing a phased array wave-controlled radar antenna array, wherein the radar antenna array comprises N sub-radar antenna arrays, each sub-radar antenna array comprises N radar antenna units, and each sub-radar antenna array is correspondingly provided with a wave control machine;
s2: the central computer generates initial waveform parameters, generates initial phase values X 1 of each sub-radar antenna array according to the initial waveform parameters, and generates initial phase values X 1 of each sub-radar antenna array according to allowable phase fluctuation values in the radar antenna arrays Establishing a phase distribution range/>；
S3: according to the number N of the sub-radar antenna arrays, the phase distribution range is definedMatching an optimal phase value for each sub-radar antenna array by using a phase distribution algorithm;
S4: inputting the optimal phase value corresponding to each sub-radar antenna array into a phase machine, wherein the optimal phase value is used as the phase matching value of the radar antenna unit transmitting wave beam in each sub-radar antenna array;
the step S3 includes:
s31: according to the number N of the sub-radar antenna arrays, the phase fluctuation range Splitting into N phase value intervals with equal length, selecting N phase values in each phase value interval, wherein the phase value interval is used as the length of one chromosome, and the phase value is used as a gene in the chromosome;
S32: binarizing the phase value corresponding to each gene to obtain binary code corresponding to each gene, according to the set mutation rate eta, Randomly mutating the code within each binary code,/>A is the number of codes requiring mutation in a binary code, A is the total number of codes in the binary code;
S33: obtaining mutation genes according to binary codes after mutation, wherein one mutation gene corresponds to one mutation phase value, the mutation phase value is differenced from an initial phase value X 1, the absolute value is taken, a mutation phase shift value is obtained, and the mutation phase value is input into an initial waveform parameter to form a mutation waveform parameter;
Judging whether the phase noise Z 1 of the abrupt waveform parameter exceeds a noise threshold value; if yes, judging that the mutation of the mutant gene fails, and executing step S34; otherwise, step S36 is performed;
s34: returning to step S31, randomly selecting a gene again in the corresponding chromosome, and ensuring that the newly selected gene is different from the selected gene;
S35: until the n genes in each chromosome are successfully mutated, the successfully mutated genes are inherited to the next generation, and mutant chromosomes are formed;
S36: the cross substitution rate k is set and, Cross-substituting the coding of each mutant gene in the mutant chromosome according to the cross-substitution rate k,/>B is the number of codes in one gene that need cross substitution, and B is the total number of codes in one gene;
S37: after the cross replacement is completed, each mutant gene is transformed into a cross gene, the cross genes form a cross chromosome, one cross gene corresponds to one cross phase value, the cross phase value is differenced from the initial phase value X 1, and then the absolute value is taken to obtain a cross phase shift value;
S38: inputting the cross phase value into the abrupt waveform parameter to form the cross waveform parameter; comparing the phase noise Z 2 of the cross waveform parameter with the phase noise Z 1 before cross substitution, if Z 2＞Z1, judging that the gene cross substitution fails, and executing step S39; otherwise, if Z 2≤Z1, determining that the gene crossover replacement is successful, and executing step S311;
s39: returning to step S36, re-selecting additional genes within the chromosome for coding crossover replacement;
S310: until each gene in the chromosome is successfully crossed and replaced, the mutant gene is crossed and replaced by a crossed gene;
S311: extracting all cross genes successfully replaced by cross to form a cross chromosome; inputting a cross waveform parameter according to a cross phase value corresponding to each cross gene in the cross chromosome, and extracting corresponding phase noise Z 2;
S312: obtaining the cross phase value of the corresponding cross genes in each cross chromosome, and establishing phase noise data sets corresponding to n cross genes in the cross chromosome by taking each cross chromosome as a unit Obtaining phase noise data sets/>, corresponding to the N crossed chromosomes，/>Screening each phase noise data set/>, for phase noise corresponding to the nth crossover gene in each crossover chromosomeInternal phase noise minimum/>Phase noise minimum/>The corresponding cross phase value is the optimal phase value of the sub-radar antenna array.
2. The method of claim 1, wherein the noise threshold calculation model is:
；
Wherein, For the closed loop response of the wave control signal transmission, f is the relation coefficient of phase noise and closed loop response,/>Allowed phase noise for the beam corresponding to the initial waveform parameters,/>For initial phase value,/>As a transfer function of the initial phase value,/>V in is the noise threshold as a function of the frequency response of the amplitude to the initial phase.
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| KR100948257B1 (en) * | 2007-09-20 | 2010-03-18 | 한국전자통신연구원 | Phase Correction Apparatus of Phased Array Antennas and its Method |
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| KR20110115465A (en) * | 2010-04-15 | 2011-10-21 | 국방과학연구소 | Method of beam nulling in phase arrangement antenna |
| JP2014027525A (en) * | 2012-07-27 | 2014-02-06 | Mitsubishi Electric Corp | Antenna excitation phase determination method, phase shifter control device and communication system |
| CN110265794A (en) * | 2019-03-18 | 2019-09-20 | 西安天伟电子***工程有限公司 | The control method of active phase array antenna and antenna beam |
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