北斗二代卫星导航系统(BDS Ⅱ)是我国自主研发、开放兼容、技术先进、由区域逐渐向全球覆盖的导航系统。目标是提供全天候、全天时定位和导航服务。文中介绍的车载炮位侦查与校射雷达配置北斗接收系统进行双频快速定向。在多径信号分析建模的基础上,北斗定位定向仪在扼流圈天线设计、信号处理等方面采取适宜的多径抑制措施。其中,改进窄相关器对同相多径信号起到了较好的抑制效果。测试结果表明:北斗系统具有稳定可靠的定向精度,满足雷达方位标定需求。

BeiDou navigation satellite system of the second generation (BDS Ⅱ) is a satellite system of independent research and development by our country. Also it is open, receptive and technologically advanced. It will cover from region to the world. The goal is to provide all-weather positioning and navigation services. The vehicle emplacement and calibration radar what this paper introduces equips compass receiver system for dual frequency fast orientation. Positioning and orientation instrument takes various and optimum measures of multipath suppression such as choke ring antenna and signal processing on a multipath signal analysis modeling basis. Among them the improved narrow correlator has better suppression effect on the in-phase multipath signal. Test results show that the system runs stably and directional precision is accuracy. BeiDou orientation meets the requirement of radar automatic azimuth calibration.

TN959.71