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A Radar Communication Waveform Design Method Based on Sparse Frequency

A sparse frequency, radar waveform technology, applied in the field of signal processing, can solve the problems of low communication efficiency and small number of communication samples, achieve the effect of low interception rate, simple implementation, and guaranteed detection characteristics

Active Publication Date: 2017-11-03
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0007] In view of this, the present invention aims at the radar embedded communication realized by linear frequency modulation (LFM) pulse, and the embedded communication signal can only use less frequency band resources, thus resulting in less number of communication samples and low communication efficiency, and proposes A Sparse Frequency Waveform Design Method for Radar Embedded Communication

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  • A Radar Communication Waveform Design Method Based on Sparse Frequency
  • A Radar Communication Waveform Design Method Based on Sparse Frequency
  • A Radar Communication Waveform Design Method Based on Sparse Frequency

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Embodiment Construction

[0063] The present invention provides a sparse frequency waveform design method for radar embedded communication, the basic idea of ​​which is as follows: figure 1 As shown, first, a sparse frequency waveform is designed by the power spectral density matching method; then the eigenvalue decomposition of the sparse frequency waveform sequence is performed to obtain the eigenvector group; finally, a part of the eigenvectors is used to design the communication signal. The radar receiver receives the radar scattered echo signal and the radar embedded communication waveform to realize the two functions of radar detection and communication, and the communication process can achieve the purpose of concealment.

[0064] figure 2 It is a flowchart of a preferred embodiment of the present invention, such as figure 2 As shown, it specifically includes the following five steps:

[0065] 1. Based on the radar tag (Tag) system application, establish a radar embedded communication model....

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Abstract

The invention discloses a sparse frequency waveform design method for radar embedded communication. The steps of the method are as follows: step (1), the radar identification Tag system receives the radar scattering echo, and uses a power spectral density matching method to design the sparse radar scattering echo. Frequency radar waveform; Step (2), carry out eigendecomposition to the sequence of sparse frequency radar waveform, obtain feature vector group; Utilize a part in the described feature vector group to design communication waveform; Step (3), step (2) obtains The communication waveform is embedded into the resulting sparse frequency radar waveform, and the resulting blended waveform is sent to the radar receiver. Compared with the linear frequency modulation waveform, the application of the sparse frequency waveform in the present invention can increase the space occupied by the frequency band of the communication signal, so that a higher communication rate can be obtained. At the same time, the communication signal samples are orthogonal to each other and have a certain correlation with the sparse frequency waveform. It can guarantee the low bit error rate and low interception rate of the communication signal.

Description

technical field [0001] The invention belongs to the field of signal processing, in particular to a sparse frequency waveform design method for radar embedded communication. Background technique [0002] The main functions of radar are detection, target location and guidance. The composition principle of the communication system and the radar is similar, both include the process of transmitting and receiving electromagnetic waves. Under the premise of sharing resources such as frequency bands and antennas, the same system can realize radar detection and communication functions, which is the concept of radar communication integration. There are three approaches to radar communication integrated waveform design: 1. Modulate communication data on radar waveform; 2. Transform communication signal into radar detection waveform; [0003] The communication system in the general research of radar communication integration is mainly for large-bandwidth data communication between two...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G01S13/88
Inventor 张冰尘麦超云孙进平毕辉洪文
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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