A method of Robust low-angle target height and compound reflection coefficient joint estimation

• 作者: WANG Shenghua CAO Yunhe LIU Yutao
• 来源期刊: 系统工程与电子技术（英文版）
• 年，卷（期）: 2022,（2）
• 所属期刊栏目: DEFENCE ELECTRONICS TECHNOLOGY
• 页码范围: 322-329
• 页数: 8页
• 语种: 英文
• DOI: 10.23919/JSEE.2022.000033

摘要

It is always a challenging issue for radar systems to estimate the height of a low-angle target in the multipath propagation environment. The highly deterministic maximum likelihood estimator has a high accuracy, but the errors of the ground reflection coefficient and the reflecting surface height have serious influence on the method. In this paper, a robust es-timation method with less computation burden is proposed based on the compound reflection coefficient multipath model for low-angle targets. The compound reflection coefficient is es-timated from the received data of the array and then a one-di-mension generalized steering vector is constructed to estimate the target height. The algorithm is robust to the reflecting sur-face height error and the ground reflection coefficient error. Fi-nally, the experiment and simulation results demonstrate the validity of the proposed method.