双机频率域交替闪烁的协同相参信号处理方法  

Cooperation Coherent Signal Processing Method for Alternating Flicker in the Frequency Domain of Dual-aircraft

作　　者：张亚男[1] 王娜 董乔龙 张劲东[1] Zhang Yanan;Wang Na;Dong Qiaolong;Zhang Jingdong(Nanjing University of Aeronautics and Astronautics,Nanjing 211100,China;Wuhan Guide Infrared Co.,Ltd,Wuhan 430205,China)

机构地区：[1]南京航空航天大学,江苏南京211100 [2]武汉高德红外股份有限公司,湖北武汉430205

出　　处：《航空科学技术》2024年第6期86-95,共10页Aeronautical Science & Technology

基　　金：航空科学基金(20172052015)。

摘　　要：多机协同探测从空域方面扩展了雷达辐射波形的复杂度,频率域交替闪烁为空战场强对抗复杂电磁环境下空、时、频域高度隐蔽提供了多维手段。针对双机编队频率域交替闪烁探测模式下距离—多普勒二维相参处理,本文提出了一种交替方向乘子法(ADMM)框架下嵌套多点欠定系统聚焦求解(MFOCUSS)的相位误差估计和二维场景重构方法。仿真结果表明,该方法能够精确估计双机雷达系统频率源引入的固有相位误差,同时对大间隔的双机频率能够进行有效地相参积累和二维场景重构。通过研究,本文设计一种新的双机协同探测工作模式,解决了双机频率域闪烁探测模式下的相位校正和场景重建问题,为复杂电磁环境下协同探测提供了信号处理方法。Multi aircraft cooperative detection expands the complexity of radar radiation waveform from the aspect of airspace,and provides more possibilities for air combat field strength against covert detection in complex electromagnetic environment.In this paper,the working mode of two aircraft self transmit and receive signal level cooperative detection is designed,and a phase error estimation and sparse scene reconstruction method based on the combination of multiple underdetermined system solver(MFOCUSS)and alternating direction multiplier method(ADMM)is proposed.Simulation results show that this method can accurately estimate the system phase error and effectively coherently accumulate and reconstruct the scene of two frequencies at any interval.Through the research,a new dual-aircraft cooperative detection mode has been designed,which solves the phase correction and scene reconstruction issues in the dual-aircraft frequency flicker detection mode.This provides a signal processing method for cooperative detection under complex electromagnetic environments.

关 键 词：双机协同探测 相参积累 稀疏重构 系统相位误差 交替方向乘子法 

分 类 号：TN958[电子电信—信号与信息处理]