北斗无源定位系统及其卡尔曼滤波分析

北斗卫星导航系统由于卫星数目有限,不能实现实时三维无源定位。文中提出利用铷钟作为北斗接收机内部时钟,进行无源定位的工程实现方案,该方案利用接收机测量的伪距信息以及数字高程来解算用户位置。介绍了北斗接收机连续定位原理、解算方法,并根据试飞数据分析了目前能达到的定位精度。

Beidou Passive Location Systems and the Analysis of their Kalman Filter

The Beidou star navigation system cannot accomplish real-time three-dimensional passive navigation due to the limitation of satellites.One passive navigation engineering scheme using the rubidium clock as the receiver clock under the flight environment is put forward.The receiver can calculate the position of the user according to the three measured pseudo ranges and altitude message.The continuous position principle and the method of calculating of the scheme are introduced in detail.The present obtainable...