深空通信中一种循环能量谱的信号检测方案

doi:10.3969/j.issn.1001-2400.2013.04.017

J4 ›› 2013, Vol. 40 ›› Issue (4): 102-107.doi: 10.3969/j.issn.1001-2400.2013.04.017

• Original Articles • Previous Articles Next Articles

Novel cyclic energy spectrum detection method for deep space communications

REN Guangliang¹;MIN Quanyun¹;LU Manhong²

(1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071， China;
2. Beijing Research Institute of Telemetry, Beijing 100076， China)

Received:2012-12-25 Online:2013-08-20 Published:2013-10-10
Contact: REN Guangliang E-mail:glren@mail.xidian.edu.cn

Abstract

Abstract:

According to the extremely low signal-to-noise ratio (SNR) of the received signal and the large Doppler frequency shift in the deep space communication systems, a novel detection method based on the cyclic energy spectrum is proposed. Firstly, the distribution of energy of the cycle frequency slices in the cyclic spectrum is defined as the cyclic energy spectrum. Then we correlate the cyclic energy spectrum of the received signal with that of the transmitted signal as the detecting statistic, which can determine whether the signal is present or not. Simulation results show that the proposed detector can obtain a gain under an SNR of more than 6.5dB compared with the existing detectors, and is robust to the Doppler frequency shift.

Key words: deep space communication, cyclic energy spectrum, signal detection

CLC Number:

TN911

REN Guangliang;MIN Quanyun;LU Manhong. Novel cyclic energy spectrum detection method for deep space communications[J].J4, 2013, 40(4): 102-107.

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Novel cyclic energy spectrum detection method for deep space communications

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