CN113791390B - Radar communication integrated signal design method based on RS sequence and soft spread spectrum technology - Google Patents
Radar communication integrated signal design method based on RS sequence and soft spread spectrum technology Download PDFInfo
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- CN113791390B CN113791390B CN202111009653.2A CN202111009653A CN113791390B CN 113791390 B CN113791390 B CN 113791390B CN 202111009653 A CN202111009653 A CN 202111009653A CN 113791390 B CN113791390 B CN 113791390B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
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- Radar, Positioning & Navigation (AREA)
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- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
A radar communication integrated signal design method based on Reed-Solomon (RS) sequence and soft spread spectrum technology adopts RS sequence with good self-cross correlation performance as spread spectrum sequence, and binary state of k-bit communication information is expressed that the corresponding length of corresponding state is 2 k Thereby realizing a spread spectrum gain of 2 k Soft spread signal of/k; and then modulating the spread spectrum signal onto the linear frequency modulation radar signal through BPSK to form a radar communication integrated signal carrying communication information. At a communication receiving end, obtaining communication data through demodulation and despreading; for radar signals, after passing through a detected target, echo signals are subjected to matched filtering to obtain detection information. The method can effectively solve the problem of excessively high frequency spectrum resource occupation of the spread spectrum radar communication integrated signal, and has the advantages of strong anti-interference capability and high frequency spectrum resource utilization rate compared with other direct sequence spread spectrum radar communication integrated signals.
Description
Technical Field
The invention relates to the field of radar communication, in particular to an integrated radar communication system for improving anti-interference performance and spectrum resource utilization rate.
Background
In the radar communication integrated system, in order to ensure the accuracy of detection communication, the radar communication integrated system is required to have stronger anti-interference performance. In a general radar communication system, a direct sequence spread spectrum technology is adopted to improve the anti-interference capability of radar communication integrated waveforms, and the technology can effectively improve the anti-interference performance of signals, but the technology is used for sacrificing the channel capacity of spectrum bandwidth. The system adopts the RS sequence soft spread spectrum technology to improve the anti-interference performance of the system, realizes spectrum spread by the coding technology, and has the advantages of high spectrum resource utilization rate and stronger anti-interference capability compared with the common direct sequence spread spectrum technology.
Disclosure of Invention
The invention relates to a radar communication integrated signal design method based on an RS sequence and a soft spread spectrum technology, which is applied to a radar communication integrated system, wherein communication information is spread by the RS sequence, a radar signal is taken as a carrier wave to carry out BPSK modulation on the spread communication signal, and then the spread communication signal is formed into a radar communication integrated signal to be transmitted by a transmitter; at a communication receiving end, obtaining communication data through demodulation and despreading; for radar signals, after passing through a detected target, echo signals are subjected to matched filtering to obtain detection information, and a schematic block diagram of the radar signals is shown in figure 2.
The invention solves the technical problems that: by applying the RS sequence technology and the coding technology to the radar communication integrated signal design, the anti-interference capability and the spectrum resource utilization rate of the radar communication integrated system can be effectively improved.
The technical scheme of the invention is as follows: the radar communication integrated signal design method based on the RS sequence and the soft spread spectrum technology comprises the following steps:
1) Dividing the digital communication signals into k bits/group, the binary state of each group of signals respectively corresponding to length 2 k The corresponding RS sequence is used for representing the corresponding k-bit communication information, thereby realizing the spread spectrum gain of 2 k Soft spread signal of/k, RS sequence generation model is shown in fig. 3.
2) And then BPSK modulating the communication signal by taking the radar signal as a carrier wave to form a radar communication integrated signal, and transmitting the radar communication integrated signal through a transmitter.
Compared with the prior art, the invention has the advantages that: the radar communication integrated signal design method provided by the invention has the advantages that the anti-interference capability and the spectrum resource utilization rate of the radar communication integrated signal are improved, and compared with the traditional direct sequence spread spectrum radar communication integrated signal, the anti-interference capability and the spectrum resource utilization rate of the signal can be improved.
Drawings
Fig. 1 is a system block diagram of the method of the present invention.
Fig. 2 is a schematic block diagram of a radar communication integrated system of the method of the present invention.
FIG. 3 is a block diagram of a model of RS sequence generation in the method of the present invention.
Detailed Description
The invention relates to a radar communication integrated signal design block diagram based on RS sequence and soft spread spectrum technology, which is shown in figure 1, and comprises the following specific steps:
1) Firstly, spreading a communication signal by using an RS sequence soft spreading technology to obtain a communication spread spectrum signal; the specific operation is as follows:
dividing the digital communication signals into k bits/group, the binary state of each group of signals respectively corresponding to length 2 k The corresponding RS sequence is used for representing the corresponding k-bit communication information, thereby realizing the spread spectrum gain of 2 k Soft spread signal of/k. Let the communication data be a (t), the spectrum spread signal is represented as follows:
wherein a is n For communicating data symbols, T b Is code width g n (t) is a gate function, expressed as:
the k-bit parallel processing is carried out on the a (t), and the weighting value of the k-bit information code is obtained:
wherein j represents a corresponding reference number of the RS sequence, and the coding space RS sequence is selected according to the reference number, so that the baseband signal after spectrum expansion can be obtained as follows:
in the above, c j And (T) represents an RS code corresponding to k-bit information, and T is an RS sequence period.
2) And then BPSK modulating the communication signal by taking the radar signal as a carrier wave to form a radar communication integrated signal, and transmitting the radar communication integrated signal through a transmitter. The radar signal is a chirp signal, and the integrated signal obtained by BPSK modulating the chirp signal as a carrier and a communication spread spectrum signal is as follows.
Wherein rect (t) is a rectangular function, and the expression is:
the foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. The radar communication integrated signal design method based on the RS sequence and the soft spread spectrum technology is characterized by comprising the following steps:
1) Firstly, dividing digital communication signals into k bits/group, and respectively corresponding binary states of each group of signals to length 2 k The corresponding RS sequence is used for representing the corresponding k-bit communication information, thereby realizing the spread spectrum gain of 2 k Soft spread signal of/k; let the communication data be a (t), the spectrum spread signal is represented as follows:
wherein a is n For communicating data symbols, T b Is code width g n (t) is a gate function, expressed as:
the k-bit parallel processing is carried out on the a (t), and the weighting value of the k-bit information code is obtained:
wherein j represents a corresponding reference number of the RS sequence, and the coding space RS sequence is selected according to the reference number, so that the baseband signal after spectrum expansion can be obtained as follows:
in the above, c j (T) represents an RS code corresponding to k-bit information, and T is an RS sequence period;
2) And then modulating the soft spread spectrum signal onto a carrier linear frequency modulation radar signal through BPSK to form a radar communication integrated signal carrying communication information.
2. The method for designing a radar communication integrated signal based on the RS sequence and the soft spread spectrum technology according to claim 1, wherein: step 2) the radar signal adopts a linear frequency modulation signal, and the integrated signal after BPSK modulation is carried out on the linear frequency modulation signal serving as a carrier wave and a communication spread spectrum signal is as follows:
wherein rect (t) is a rectangular function, and the expression is:
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209145A (en) * | 2013-04-15 | 2013-07-17 | 深圳市力合微电子有限公司 | Orthogonal frequency division multiplexing (OFDM) modulation-based method for detecting power line carrier channel |
| CN103414670A (en) * | 2013-08-21 | 2013-11-27 | 电子科技大学 | Long code DSSS signal blind dispreading method based on semi-definite programming |
| CN104811222A (en) * | 2015-04-23 | 2015-07-29 | 西安电子工程研究所 | Design method of radar communication integrated signal |
| CN106291610A (en) * | 2015-06-12 | 2017-01-04 | 北京信息科技大学 | A kind of parallel correlation module of compression for GNSS signal compression capture processing means and its implementation |
| CN107086975A (en) * | 2017-03-21 | 2017-08-22 | 西安电子科技大学 | A kind of method for realizing the integration of OFDM radar communications signal |
| CN107425953A (en) * | 2017-05-26 | 2017-12-01 | 北京理工大学 | Sychronisation, synchronous method and the speed receiver using the sychronisation |
| CN107666333A (en) * | 2017-01-20 | 2018-02-06 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Expansion/Frequency Hopping Signal system array antenna Adaptive beamformer system |
| CN108768446A (en) * | 2018-05-30 | 2018-11-06 | 西安电子科技大学 | The signal waveform design method of low probability of intercept radar communication integrated system |
| CN108833025A (en) * | 2017-12-29 | 2018-11-16 | 西安电子科技大学 | The low interception performance appraisal procedure of spread spectrum radar communication integrated system |
| CN112235224A (en) * | 2020-10-12 | 2021-01-15 | 电子科技大学 | Link 16-based enhanced data Link transmission waveform design method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020009125A1 (en) * | 2000-06-12 | 2002-01-24 | Shi Zhen Liang | High bandwidth efficient spread spectrum modulation using chirp waveform |
| US7224716B2 (en) * | 2002-02-11 | 2007-05-29 | Hypertag Communications, Inc. | Communication methods and apparatus employing spread spectrum techniques and doppler-tolerant polyphase codes |
-
2021
- 2021-08-31 CN CN202111009653.2A patent/CN113791390B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103209145A (en) * | 2013-04-15 | 2013-07-17 | 深圳市力合微电子有限公司 | Orthogonal frequency division multiplexing (OFDM) modulation-based method for detecting power line carrier channel |
| CN103414670A (en) * | 2013-08-21 | 2013-11-27 | 电子科技大学 | Long code DSSS signal blind dispreading method based on semi-definite programming |
| CN104811222A (en) * | 2015-04-23 | 2015-07-29 | 西安电子工程研究所 | Design method of radar communication integrated signal |
| CN106291610A (en) * | 2015-06-12 | 2017-01-04 | 北京信息科技大学 | A kind of parallel correlation module of compression for GNSS signal compression capture processing means and its implementation |
| CN107666333A (en) * | 2017-01-20 | 2018-02-06 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Expansion/Frequency Hopping Signal system array antenna Adaptive beamformer system |
| CN107086975A (en) * | 2017-03-21 | 2017-08-22 | 西安电子科技大学 | A kind of method for realizing the integration of OFDM radar communications signal |
| CN107425953A (en) * | 2017-05-26 | 2017-12-01 | 北京理工大学 | Sychronisation, synchronous method and the speed receiver using the sychronisation |
| CN108833025A (en) * | 2017-12-29 | 2018-11-16 | 西安电子科技大学 | The low interception performance appraisal procedure of spread spectrum radar communication integrated system |
| CN108768446A (en) * | 2018-05-30 | 2018-11-06 | 西安电子科技大学 | The signal waveform design method of low probability of intercept radar communication integrated system |
| CN112235224A (en) * | 2020-10-12 | 2021-01-15 | 电子科技大学 | Link 16-based enhanced data Link transmission waveform design method |
Non-Patent Citations (1)
| Title |
|---|
| 曾孝平等.软扩频技术及其编码与性能分析.《重庆邮电学院学报(自然科学版)》.2001,(第S1期),22-25. * |
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