太赫兹科学与电子信息学报2025，Vol.23Issue(8)：816-824,9.DOI:10.11805/TKYDA2024616
分布式频率分集阵发射频偏与接收滤波器联合优化方法
Joint optimization method of frequency increments and receive filters in distributed frequency diverse array radar
摘要
Abstract
To further exploit the dual advantages of spatial diversity and waveform diversity in distributed frequency diverse array radar,a joint optimization method for transmit and receive parameters of distributed frequency diverse array radar based on the Maximum Block Improvement-Minorize Maximization(MBI-MM)is proposed.This method enhances the radar system's detection performance by jointly designing the transmit frequency offsets and receive filters of each radar station.Firstly,an optimization function is constructed to maximize the Signal-to-Interference-plus-Noise Ratio(SINR)of the target output in the clutter background,with constraints imposed on the frequency offsets and receive filters.Then,the original problem is decomposed into two independent subproblems,which are solved alternately.Finally,the MBI method is employed to iteratively update the optimization solutions of the two subproblems until the objective function converges.Simulations demonstrate that the joint optimization of frequency offsets and receive filters can significantly improve the SINR of the target output in the clutter background.Specifically,the target output SINR is improved by 5.7 dB when only the frequency offsets are optimized compared to when only the receive filters are optimized.After the joint optimization of transmit and receive parameters,the target output SINR is increased by 7.2 dB compared to when only the receive filters are optimized,and by an additional 1.5 dB compared to when only the frequency offsets are optimized.The proposed method enhances the radar's target detection performance in complex backgrounds for specific areas.关键词
分布式频率分集阵雷达/发射频偏/接收滤波器/联合优化/最大块改进-优化最大化/输出信干噪比Key words
distributed frequency diverse array radar/frequency increments/receive filters/joint optimization/Maximum Block Improvement-Minorize Maximization(MBI-MM)/output Signal-to-Interference-plus-Noise Ratio分类
信息技术与安全科学引用本文复制引用
李坤坤,朱嘉运,马润龙,魏法,兰岚..分布式频率分集阵发射频偏与接收滤波器联合优化方法[J].太赫兹科学与电子信息学报,2025,23(8):816-824,9.基金项目
国家自然科学基金资助项目(62471348 （）
62101402) （）
