MIMO雷达导引头正交波形设计与应用技术

Design and Application of Orthogonal Waveformof MIMO Radar Seeker

摘要:

针对多输入多输出(Multiple Input Multiple Output, MIMO)雷达导引头发射波形设计问题,分析了正交频分复用线性调频信号的自相关和互相关特性,设计了正交频分复用线性调频波形并给出了基于直接数字频率合成芯片的波形产生方法。针对正交波形匹配接收工程实现运算量太大的问题,给出了基于现场可编程门阵列的并行正交信号匹配接收过程,对时、频域正交信号匹配接收的算法结构和运算量进行了优化和对比,为MIMO 雷达导引头的工程实现提供了参考。

Abstract:

Aiming at the transmitting orthogonal waveform design problem of multiple inputmultiple output (MIMO) radar seeker, the auto-correlation and cross-correlation characteristics oforthogonal frequency division multiplexing linear frequency modulation ( OFDM-LFM) signals areanalyzed, the waveform is designed and a method based on direct digital synthesizer(DDS)is proposed.To solve the problem of large computation in engineering of orthogonal signal matching filtering, areceiving process of parallel orthogonal signal matching based on field programmable gate array(FPGA) is presented, The algorithm structure and calculation of orthogonal signal matching receptionin time and frequency domain are given and compared, The proposed method provides a reference forthe engineering realization of MIMO radar seeker.