A reflected signal acquisition algorithm for Beidou GNSS-R receiver

Dianzi Jishu Yingyong

Yang Rui¹  Li Xin¹  Huang Haisheng¹  Cao Xinliang² 

[1] School of Electronic Engineering，Xi′an University of Posts and Telecommunications，Xi′an 710121，China;School of Physics and Electronic Information，Yan′an University，Yan′an 716000，China;

关键词: reflected signals;    navigation data;    coherent noncoherent;    FFT;    integral gain;   

DOI  :  10.16157/j.issn.0258-7998.174212

来源: DOAJ

【 摘 要 】

Aiming at the difficulty of Beidou reflected signal acquisition, this paper presents a capture algorithm for the reflected signal in the Beidou GNSS-R receiver. The algorithm uses the navigation data in the direct signal to peel off the navigation data in the reflected signal, and improves the traditional reflection signal acquisition algorithm through the cyclic accumulation operation and the FFT correlation.The algorithm can greatly reduce the computational complexity and shorten the capture time of long time integral of the reflected signal.In this paper, the MATLAB simulation of the new algorithm is carried out, and compared with the traditional coherent-uncoupling algorithm and the difference coherence algorithm. The simulation results show that the algorithm in this paper is superior to the traditional coherent noncoherent and differential coherent acquisition algorithm in capturing performance.

【 授权许可】

Unknown