An improved FFT acquisition method for weak signal in deep-space communications

Xi Pan*, Ming Chen

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

In deep space communication, due to the restricted transmitted power, sharply-attenuated of signals because of long distance and all the noise in space, the received signals from the deep space have low signal to noise ratio (SNR) and high carrier phase noise. The Ultra long point FFT algorithm and binary branch acquisition technique were studied and the modified binary branch FFT acquisition method was proposed. The more flexible method has faster acquisition ability and higher detection probability. Based on the software radio technology, the hardware platform of "FPGA + DSP" was built to implement the 216 FFT using modified two-arm acquisition technique, the carrier wave acquisition and tracking were implemented on the condition of extra-low SNR and the test result indicated the method in this paper can implement the quick detection under the 16dBHz SNR or below.

源语言英语
主期刊名International Conference on Space Information Technology 2009
DOI
出版状态已出版 - 2010
活动International Conference on Space Information Technology 2009 - Beijing, 中国
期限: 26 11月 200927 11月 2009

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
7651
ISSN(印刷版)0277-786X

会议

会议International Conference on Space Information Technology 2009
国家/地区中国
Beijing
时期26/11/0927/11/09

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引用此

Pan, X., & Chen, M. (2010). An improved FFT acquisition method for weak signal in deep-space communications. 在 International Conference on Space Information Technology 2009 文章 76510S (Proceedings of SPIE - The International Society for Optical Engineering; 卷 7651). https://doi.org/10.1117/12.855385