Observability and estimability of passive radar with unknown illuminator states using different observations  

作　　者：JING Tong TIAN Wei HUANG Gaoming PENG Huafu 

机构地区：[1]College of Electronic Engineering,Naval University of Engineering,Wuhan 430033,China

出　　处：《Journal of Systems Engineering and Electronics》2020年第6期1193-1205,共13页系统工程与电子技术（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(61803379);the China Postdoctoral Science Foundation(2017M613370,2018T111129).

摘　　要：Most existing studies about passive radar systems are based on the already known illuminator of opportunity(IO)states.However,in practice,the receiver generally has little knowledge about the IO states.Little research has studied this problem.This paper analyzes the observability and estimability for passive radar systems with unknown IO states under three typical scenarios.Besides,the directions of high and low estimability with respect to various states are given.Moreover,two types of observations are taken into account.The effects of different observations on both observability and estimability are well analyzed.For the observability test,linear and nonlinear methods are considered,which proves that both tests are applicable to the system.Numerical simulations confirm the correctness of the theoretical analysis.

关 键 词：passive radar passive coherent location(PCL) OBSERVABILITY ESTIMABILITY unknown illuminator states 

分 类 号：TN958.97[电子电信—信号与信息处理]