关键词: 无源定位, 伪距, 铷钟, 导航

Abstract:

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 location accuracy is analyzed according to flight test  data.

Key words: passive location;pseudo-range;rubidium clock;navigation