Subcarrier allocation and waveform combined optimization design method of radar communication integral system

Abstract

The invention discloses a subcarrier allocation and waveform combined optimization design method of a radar communication integral system. The method comprises the following steps of Step 1, aiming atthe radar communication integral system, according to priori knowledge, obtaining the target detection channel frequency response H<rad>[k] and the communication channel frequency response H<com>[k]on the k-th subcarrier; Step 2, respectively building a mutual information expression representing the target parameter estimation performance and a data transmission speed expression representing thecommunication performance; Step 3, according to a preset target parameter estimation performance mutual information threshold value T<rad> and a preset data transmission speed threshold T<com>, building a subcarrier allocation and waveform combined optimization design model of the radar communication integral system; and Step 4, solving the subcarrier allocation and waveform combined optimizationdesign model of the radar communication integral system. The subcarrier allocation and waveform combined optimization design method of the radar communication integral system has the advantage that the radio frequency stealth performance of the system can be effectively improved.

Description

technical field [0001] The invention relates to radar waveform technology, in particular to a method for joint optimization design of subcarrier allocation and waveform in a radar communication integrated system. Background technique [0002] With the development of modern technology, the RF front-end architecture of radar and wireless communication technology is becoming more and more similar. Considering spectrum efficiency and cost-effectiveness comprehensively, the integration of radar communication has become the development trend of modern electronic equipment. The integrated radar communication system can use the same waveform to complete the communication function while performing radar detection. The OFDM waveform, as one of the optimal candidate waveforms for radar communication integration, has been widely concerned by scholars at home and abroad. [0003] At present, although the existing research results involve the optimal waveform design of radar communicati...

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Problems solved by technology

[0004] Purpose of the invention: The purpose of the invention is to provide a joint optimization design method of subcarrier allocation and waveform in the integrated radar communication system, which can solve the problems existing in the prior art The technical problem of the impact of subcarrier allocation in OFDM waveforms on the radio frequency stealth performance of the system is not considered

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