采用伪噪声重采样的海事卫星上行信号的检测与定向

doi:10.12066/j.issn.1007-2861.1752

Journal of Shanghai University（Natural Science Edition） ›› 2017, Vol. 23 ›› Issue (6): 865-.doi: 10.12066/j.issn.1007-2861.1752

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Detection and orientation for Inmarsat satellite uplink signal based on pseudo-noise resampling

WANG Jiadong^1,2,3, WANG Xiaojiang^1,2,3, NIU Liying^1,2,3, ZHENG Guoxin^1,2,3

1. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China;
2. Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai University, Shanghai 200444, China;
3. Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai 200444, China

Received:2016-01-07 Online:2017-12-30 Published:2017-12-30

Abstract

Abstract:

Pseudo-noise resampling (PR) is applied to uniform circular array (UCA) to find the direction of arrival (DOA) of Inmarsat satellite uplink signal based on ROOTMUSIC. To improve the DOA resolution at low SNR, a new estimation algorithm is proposed based on means and standard deviations of pre-estimate. Meanwhile, performance computations are carried out under different pre-estimation conditions due to different statistical data. Simulations show that the proposed scheme can significantly improve the DOA resolution at low signal noise ratio (SNR) compared with the conventional ROOTMUSIC algorithm.

Key words: direction of arrival (DOA), Inmarsat satellite, ROOT-MUSIC, uniform circular array (UCA), pseudo-noise resampling (PR)

WANG Jiadong1,2,3, WANG Xiaojiang1,2,3, NIU Liying1,2,3, ZHENG Guoxin1,2,3. Detection and orientation for Inmarsat satellite uplink signal based on pseudo-noise resampling[J]. Journal of Shanghai University（Natural Science Edition）, 2017, 23(6): 865-.

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Detection and orientation for Inmarsat satellite uplink signal based on pseudo-noise resampling

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