CN113791390A - 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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- CN113791390A CN113791390A CN202111009653.2A CN202111009653A CN113791390A CN 113791390 A CN113791390 A CN 113791390A CN 202111009653 A CN202111009653 A CN 202111009653A CN 113791390 A CN113791390 A CN 113791390A
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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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Abstract
A radar communication integrated signal design method based on Reed-Solomon (RS) sequences and soft spread spectrum technology adopts RS sequences with good self-correlation and cross-correlation performances as spread spectrum sequences, and expresses the length of a binary system state of k-bit communication information corresponding to a corresponding state to be 2kThereby achieving a spreading gain of 2kA soft spread spectrum signal of/k; and then, modulating the spread spectrum signal to a linear frequency modulation radar signal through BPSK to form a radar communication integrated signal carrying communication information. At a communication receiving end, communication data is obtained after demodulation and de-spread; for radar signals, after the radar signals pass through a detection target, echo signals are subjected to matching filtering to obtain detection information. The invention can effectively solve the problem of overhigh occupied frequency spectrum resources of the spread spectrum radar communication integrated signal, and has the advantages of strong anti-interference capability and high utilization rate of frequency spectrum resources 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 a method for improving the anti-interference performance and the frequency spectrum resource utilization rate of a radar communication integrated system.
Background
In a radar communication integrated system, in order to ensure the accuracy of detection communication, the radar communication integrated system needs to have strong anti-interference performance. In a general radar communication system, the anti-interference capability of a radar communication integrated waveform is improved by adopting a direct sequence spread spectrum technology, the anti-interference performance of signals can be effectively improved by the technology, and the channel capacity is exchanged by sacrificing the frequency spectrum bandwidth. The system adopts the RS sequence soft spread spectrum technology to improve the anti-interference performance of the system, realizes spectrum expansion through 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.A communication information is spread by the RS sequence, and BPSK modulation is carried out on the spread communication signal by taking a radar signal as a carrier wave to form a radar communication integrated signal which is sent by a transmitter; at a communication receiving end, communication data is obtained after demodulation and de-spread; for radar signals, after the radar signals pass through a detection target, echo signals are subjected to matching filtering to obtain detection information, and a schematic block diagram of the radar signals is shown in an attached figure 2.
The technical problem solved by the invention is as follows: 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 a 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 digital communication signals into k bits per group, wherein binary states of each group of signals respectively correspond to length of 2kRepresents corresponding k-bit communication information by using the corresponding RS sequence, thereby realizing the spread spectrum gain of 2kThe soft spread spectrum signal of/k, RS sequence generation model is shown in figure 3.
2) And then, BPSK modulation is carried out on the communication signals by taking the radar signals as carrier waves to form radar communication integrated signals, and the radar communication integrated signals are sent by a transmitter.
Compared with the prior art, the invention has the advantages that: the radar communication integrated signal design method provided by the invention can improve the anti-interference capability and the frequency spectrum resource utilization rate of the radar communication integrated signal, and can improve the anti-interference capability and the frequency spectrum resource utilization rate of the signal compared with the traditional direct sequence spread spectrum radar communication integrated signal.
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 integration system of the method of the present invention.
FIG. 3 is a block diagram of a model for generating RS sequences in the method of the present invention.
Detailed Description
The invention relates to a radar communication integrated signal design block diagram based on an RS sequence and a soft spread spectrum technology, which is shown in an attached figure 1 and comprises the following specific steps:
1) firstly, carrying out spread spectrum on a communication signal by utilizing an RS sequence soft spread spectrum technology to obtain a communication spread spectrum signal; the specific operation is as follows:
dividing digital communication signals into k bits per group, wherein binary states of each group of signals respectively correspond to length of 2kRepresents corresponding k-bit communication information by using the corresponding RS sequence, thereby realizing the spread spectrum gain of 2kA soft spread spectrum signal of/k. Let communication data be a (t), and the signal after spectrum spreading is represented as follows:
wherein a isnFor communicating data symbols, TbIs code width, wherein gn(t) is a gate function, and the expression is:
to an(t) performing k-bit parallel processing and calculating a weighted value for the k-bit information code to obtain:
wherein j represents a label corresponding to the RS sequence, and the selection of the RS sequence in the coding space is completed according to the label, so that the baseband signal after the spectrum spreading is obtained as follows:
in the above formula, cjAnd (T) represents an RS code corresponding to k bits of information, and T is an RS sequence period.
2) And then, BPSK modulation is carried out on the communication signals by taking the radar signals as carrier waves to form radar communication integrated signals, and the radar communication integrated signals are sent by a transmitter. The radar signal is a chirp signal, and the chirp signal is used as a carrier and is subjected to BPSK modulation with a communication spread spectrum signal to obtain an integrated signal as follows.
Where rect (t) is a rectangular function, and the expression is:
the above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
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 of:
1) firstly, dividing digital communication signals into k bits per group, wherein binary states of each group of signals respectively correspond to length of 2kRepresents corresponding k-bit communication information by using the corresponding RS sequence, thereby realizing the spread spectrum gain of 2kA soft spread spectrum signal of/k;
2) and then, modulating the soft spread spectrum signal to a carrier linear frequency modulation radar signal through BPSK to form a radar communication integrated signal carrying communication information.
2. The RS sequence and soft-spread-spectrum-technology-based radar communication integrated signal design method of claim 1, wherein: step 1) dividing digital communication signals into k bits per group, wherein binary states of each group of signals respectively correspond to length of 2kRepresents corresponding k-bit communication information by using the corresponding RS sequence, thereby realizing the spread spectrum gain of 2kA soft spread spectrum signal of/k. Let communication data be a (t), and the signal after spectrum spreading is represented as follows:
wherein a isnFor communicating data symbols, TbIs code width, wherein gn(t) is a gate function, and the expression is:
to an(t) performing k-bit parallel processing and calculating a weighted value for the k-bit information code to obtain:
wherein j represents a label corresponding to the RS sequence, and the selection of the RS sequence in the coding space is completed according to the label, so that the baseband signal after the spectrum spreading is obtained as follows:
in the above formula, cjAnd (T) represents an RS code corresponding to k bits of information, and T is an RS sequence period.
3. The RS sequence and soft-spread-spectrum-technology-based radar communication integrated signal design method of claim 1, wherein: and 2) adopting a linear frequency modulation signal as a radar signal, and carrying out BPSK modulation on the linear frequency modulation signal serving as a carrier and a communication spread spectrum signal as an integrated signal as follows:
where rect (t) is a rectangular function, and the expression is:
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Citations (12)
| 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 |
| US20030152136A1 (en) * | 2002-02-11 | 2003-08-14 | Roman Vincentzio Isachar | Communication system with concatenated matched filter and doppler-tolerant polyphase codes |
| 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 |
-
2021
- 2021-08-31 CN CN202111009653.2A patent/CN113791390B/en active Active
Patent Citations (12)
| 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 |
| US20030152136A1 (en) * | 2002-02-11 | 2003-08-14 | Roman Vincentzio Isachar | Communication system with concatenated matched filter and doppler-tolerant polyphase codes |
| 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 (5)
| Title |
|---|
| RS码的性能分析与仿真: "RS码的性能分析与仿真" * |
| 刘明: "短波通信关键技术研究与DSP实现" * |
| 张玮: "基于MIMO的雷达通信一体化技术研究" * |
| 曾孝平等: "软扩频技术及其编码与性能分析" * |
| 苏宇航等: "一种降低新型OFDM数据链误码率的方法" * |
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