10 November 2007 Doppler shift estimation in DS/SS receiver using correlation-peak waveform fitting
Author Affiliations +
Proceedings Volume 6795, Second International Conference on Space Information Technology; 679517 (2007) https://doi.org/10.1117/12.773628
Event: Second International Conference on Spatial Information Technology, 2007, Wuhan, China
Abstract
We consider the estimation of Doppler shift of the data-modulated signal in the direct sequence spread spectrum (DS/SS) communication system. A new open-loop Doppler shift estimation algorithm is developed by taking advantage of the priori knowledge that correlation peak is Sinc-function of Doppler shift in the DS/SS receiver. The proposed algorithm samples correlation peaks on different Doppler shifts and fits these samples to the correlation peak curve using a nonlinear least squares method. Performance of the proposed method is demonstrated by statistical analysis and numerical simulation. And a comparison with the four-quadrant frequency discriminator algorithm (FQFD) is given.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tingyan Yao, Weigang Zhao, Qishan Zhang, Yanhong Kou, "Doppler shift estimation in DS/SS receiver using correlation-peak waveform fitting", Proc. SPIE 6795, Second International Conference on Space Information Technology, 679517 (10 November 2007); doi: 10.1117/12.773628; https://doi.org/10.1117/12.773628
PROCEEDINGS
6 PAGES


SHARE
Back to Top