岸舰双基地地波超视距雷达技术

摘要

岸舰双基地地波超视距雷达是一种在海边利用大型天线阵列发射、在舰船上接收的双基地多输入、单/多输出雷达。该雷达通过多个天线同时发射多个相互正交的信号，在接收端对各路发射信号分离后，利用发射阵列孔径通过信号处理综合形成发射方向图。概述该雷达的工作原理和主要特点，计算其威力覆盖范围，分析需要解决在运动平台上的时频同步、基于直达波的幅相校正、直达波抑制、电离层杂波与射频干扰的抑制等关键技术，介绍该雷达原理性试验系统及其试验结果。%Coast-ship bistatic surface-wave over-the-horizon radar is a bistatic multiple input and single/multiple output radar which uses a coast-located large scale antenna array to transmit and a ship-carried an-tenna to receive.This radar transmits multiple mutually orthogonal signals simultaneously via multiple an-tennas and synthesizes at the receiver to form transmit beam pattern.This paper offers an overview of the operating principle and main characteristics of this radar and calculates its power coverage.Some key tech-niques,such as the time-frequency synchronization technique at a moving platform,the suppression of direct wave and the suppression of ionospheric clutter and radio-frequency interference are analyzed.The primary experiment system of this radar and its experiment results are introduced.