Blind Detection of Multi-satellite Signals Based on SVD
Peng Geng · Telecommunication Engineering · 2013
This paper introduces a method for blind detection of multi-satellite signals based on singular value decomposition(SVD) with low signal-to-noise ratio(SNR) in non-cooperative systems,by estimating the dimension of signal subspace.The proposed method establishes a test statistic by making full use of the relationship between singular value and eigenvalue,which can gather multiple signal energy.This method can be applied to lower SNR,and the detection performance is analyzed theoretically.Simulation results for common satellite signal indicate that the method is efficient and can adapt to multi-satellite signals under lower SNR,when false alarm probability is set to less than 1%,the blind detection probability reaches above 90% at SNR=-11 dB.And the computation complexity is reduced tenfold,which can be used in satellite-borne equipment.