A radar communication integrated system performance analysis method 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: 2019-06-07
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 radar communication integrated system performance analysis method based on mutual information, and belongs to the technical field of radars. The method comprises the followingsteps: firstly, modeling a received signal; according to the overlapping degree of the received radar signal and the communication signal, dividing Radar signals, The communication signals into two types in frequency band coexistence mode, a traditional independent coexistence mode and a partial frequency band coexistence mode; then, formulating performance characterization indexes of the system;characterizing the radar function and the performance of the communication function by adopting mutual information and communication rate between a target and a received signal under additive Gaussian white noise; deriving a theoretical expression of mutual information and communication rate; and finally, deriving the system performance under the coexistence of two frequency bands through mutualinformation and communication rate, so that the analysis and estimation of the system performance are realized, and the problem that the performance of the radar communication integrated system is difficult to estimate under the condition that the radar and communication share one transmitter / receiver and the radar and communication frequency bands coexist is solved.
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