A Performance Analysis Method of Radar Communication Integrated System Based on Mutual Information
A technology of system performance and analysis method, which is applied in the performance analysis field of radar communication integrated system based on mutual information, and can solve the problem that the performance limit of radar communication integrated system has not been studied.
Active Publication Date: 2020-04-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
From the current state of the art, the use of mutual information to estimate the performance bounds of radar-communication integration systems has not been studied
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[0091] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0092] see figure 1 , the present invention proposes a method for analyzing the performance of an integrated radar communication system based on mutual information, which is realized through the following steps:
[0093] S1. The integrated radar communication system receives radar signals and communication signals and performs modeling to obtain composite signals.
[0094] In this embodiment, the integrated radar communication system (JRCS) is composed of an active, monostatic pulse radar and a single-user communication base station. The JRCS joint receiver can simultaneously estimate the target parameters from the radar signal, and the observed The communication signal is decoded;
[0095] Given a set of Gaussian targets whose pulse-echo is g(t), the spectral variance is The transmission bandwidth is B r The radar emission signal s r (t) is used t...
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The invention provides a performance analysis method of a radar communication integration system based on mutual information, which belongs to the technical field of radar. The present invention first models the received signal, and then divides the radar signal and communication signal frequency band coexistence methods into two types according to the overlapping degree of the received radar signal and communication signal, that is, the traditional independent coexistence method and the partial frequency band coexistence method. Then formulate the performance characterization index of the system, use the mutual information and communication rate between the target and the received signal under additive Gaussian white noise to characterize the performance of the radar function and communication function, and deduce the theory of mutual information and communication rate Finally, the system performance under the coexistence mode of two frequency bands is deduced through mutual information and communication rate, which realizes the analysis and estimation of system performance and overcomes the problem that radar and communication share a transmitter / receiver, and radar and communication frequency bands coexist Under the circumstances, the performance of the integrated radar communication system is difficult to estimate.
Description
technical field [0001] The invention belongs to the technical field of radar, in particular to a performance analysis method of a radar communication integration system based on mutual information. Background technique [0002] How to combine radar and communication equipment into an integrated system to solve the problem of rational utilization of resources has become a hot research topic at home and abroad in recent years. Radar and communication spectrum sharing is an emerging technology for the coexistence of radar and communication. This is a very meaningful research, but a lot of research is needed to solve the mutual interference between radar signals and communication signals. At the same time, radar communication The development of integrated system performance evaluation index has become a key research topic of domestic and foreign experts. [0003] Since the radar communication integrated system combines the radar system and the communication system into one syst...
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IPC IPC(8): H04B17/29H04B17/15H04B17/391G01S7/40
Inventor 张天贤邓艳红田团伟韩毅孔令讲崔国龙
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA