摘要
提出了将阵列扩展测向用于反辐射导弹(ARM)抗诱偏的思想,并提出了一种改进的ESPRIT算法:共轭增强ESPRIT(CA-ESPRIT)算法。该算法利用阵列输出的延迟相关函数及其共轭形成伪阵列输出,从而得到伪协方差矩阵,对其进行特征分解,用ESPRIT算法得到波达方向。该算法有阵列扩展作用,具有比传统的MUSIC和ESPRIT算法更高的角度分辨能力。仿真实验表明,将阵列扩展用于反辐射导弹测向可将雷达和诱饵较早地从角度上分辨开。
Herein, an extended-aperture algorithm for direction finding called conjugate augmented ESPRIT （CAESPRIT） for anti-decoy in anti-radiation missile （ARM） is proposed. The basic idea of CA-ESPRIT is to use the crosscorrelation and its conjugated form to derive the pseudo-data matrix from which the pseudo covariance matrix is constructed. Then the directions of arrival of the signals are estimated by ESPRIT algorithm. The resolution of CA-ESPRIT is better than MUSIC and ESPRIT algorithm due to its extended-aperture effect. Applying the algorithm to contradict decoy for ARM, it is easily to distinguish radar and decoy from directions of arrival.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2007年第3期365-367,共3页
Systems Engineering and Electronics
基金
国家自然科学基金资助课题(60502040)
关键词
反辐射导弹
测向
阵列扩展
诱饵
anti-radiation missile （ARM）
direction finding
aperture extension
decoy
