Title :
New method for passive radar seeker to antagonize non-coherent radar decoy
Author :
Zhang Liang ; Xu Zhen-hai ; Xiong Zi-yuan ; Wang Xue-song
Author_Institution :
State Key Lab. of Complex Electromagn. Environ. Effects on Electron. & Inf. Syst., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
Using super resolution direction of arrival (DOA) estimation algorithm is an effective method for passive radar seeker (PRS) to antagonize non-coherent radar decoy. A novel DOA estimation algorithm is proposed to estimate the two-dimensional (2-D) arrival angles of multisource by using a uniformly circular array (UCA) of crossed dipoles. By exploiting the polarization diversity of the signals, PRS improves the resolution in condition of closely spaced noncoherent sources for both chirp signals and phase modulated (PM) signals, and offers superior performance as the polarization changes. Simulation results verify the capability and correctness of the new method.
Keywords :
dipole antenna arrays; direction-of-arrival estimation; passive radar; phase modulation; polarisation; radar resolution; DOA estimation algorithm; chirp signals; closely spaced noncoherent sources; crossed dipoles; noncoherent radar decoy; passive radar seeker; phase modulated signals; polarization diversity; super resolution direction of arrival estimation algorithm; two-dimensional arrival angles; uniformly circular array; non-coherent decoy; passive radar seeker; polarized sensitive arrays; resolution;
Conference_Titel :
Radar Conference 2013, IET International
Conference_Location :
Xi´an
Electronic_ISBN :
978-1-84919-603-1
DOI :
10.1049/cp.2013.0353
