According to the restriction between the acquisition performance and the hardware consumption, a two-stage compressive acquisition method was proposed based on compressive sensing, specifically some coarse acquisition values can be got by the first stage, following by accurately detecting the signal in the values by the second stage. Firstly, the sparsity of DSSS signal in the correlation domain was explored, so as to build the sparsity transformation matrix. Secondly, the measurement matrixes and detection algorithms in both stages were produced according to the deterministic Walsh-Hadamard matrix. Finally, the acquisition performance of the provided method was analyzed theoretically in terms of the detection probability and the mean acquisition time, which was also verified by Monte Carle method. The theoretical analysis and the simulation results show that the novel method can use much less correlations to achieve the same performance as conventional parallel correlation-based methods.
程艳合, 杨文革. 基于压缩感知的DSSS信号双阶段捕获方法[J]. 北京航空航天大学学报, 2015, 41(4): 624-631.
CHENG Yanhe, YANG Wenge. Two-stage acquisition algorithm for DSSS signal based on compressive sensing. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2015, 41(4): 624-631.
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2015, Vol. 41 
