The study of ds signals in this article broke through the conventional detection and estimation methods and modeled the ds signals as a cyclostationary random process . in this case , it can be analyzed by the theory of spectral correlation , and then we can finish the parameter estimation of ds signals by its characteristic in the field of spectral correlation 本文对低信噪比下的ds信号的研究突破常规信号检测和估计理论,将ds信号建模为周期平稳随机过程,应用谱相关理论来分析它的谱相关域特性,寻求ds信号的参数在谱相关域的特征表现,从中提取相应的ds信号参数信息。
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