The Design and Implementation of Tracking BeiDou High Sensitivity Acquisition Method

Abstract

With the rapid and efficient development of BeiDou navigation system, the high-sensitivity signal capture chip based on Soc (system on Chip) architecture has gradually become the industry research and development mainstream and benchmark. Thus, how to design and implement the weak BOC-modulated BDS signal acquisition and tracking process has already been a research hotspot and difficulty. To meet the satellite signal RF module demand of high dynamic, high precision and high sensitivity performance, the technical architecture has been designed for fast, accurate and effective capture of the two-dimensional, weak and no-fuzzy BDS navigation signal trapped fundamental issue, which can significantly resolve and enhance the tough problems in traditional BPSK-modulated BDS signal acquisition and tracking process. Finally, scenario was tested in real-time weak signal scene which are provided by Spirent signal simulator. The results indicate the proposed design and implementation can correctly collect and track the weak BPSK-modulated BDS weak navigation signal. The accurate parameters such as user's location, velocity and PDOP can be provided to users with accurate precision and high sensitivity.