基于WLS-TIR的多目标识别认知雷达波形自适应方法  

Adaptive Waveform Design Based on WLS-TIR for Multiple Targets Recognition in Cognitive Radar

作　　者：范梅梅[1] 廖东平[1] 丁小峰[2] 黎湘[1] 

机构地区：[1]国防科技大学电子科学与工程学院 [2]中国人民解放军96627部队

出　　处：《电子学报》2012年第1期73-77,共5页Acta Electronica Sinica

基　　金：国家自然科学基金委杰出青年基金(No.61025006)

摘　　要：针对多个雷达目标的识别问题,研究认知雷达的波形自适应方法,对目标冲激响应线性加权求和获得多个目标的加权表示,基于互信息准则,通过最大化接收到的信号与目标冲激响应线性加权和(WLS-TIR)的互信息获得了针对多目标识别的最优波形,给出了权值的计算方法和多目标识别的自适应机制.仿真实验表明,本文提出的方法相对于传统的线性调频信号(LFM)对多目标的识别性能有明显的提高,并具有较强的实用性和可行性.A method of adaptive waveform design for multiple targets recognition is proposed. It includes three main parts： first,a new information theoretic criterion which is the mutual information between the received signal and the weighted linear sum of the target impulse responses （WLS-TIR） is proposed; second, a method of calculating the weights is developed; third, a strategy of adaptively adjusting the waveforms for multiple targets recognition is present. The simulation results show that the proposed method increases the performance of a radar system apparently for multiple targets recognition,besides,it is realistic and feasible.

关 键 词：认知雷达 雷达目标识别 多目标 波形自适应设计 

分 类 号：TN957.51[电子电信—信号与信息处理]