基于单比特量化接收机体积小、灵敏度高、瞬时带宽大、可实时处理信号等优点,文中通过理论和仿真分析了单比特量化下宽带辐射源信号参数估计性能。首先,简要介绍了两种典型的宽带辐射源信号参数估计方法;其次,描述了单比特量化的理论推导公式并重点介绍了一种协方差矩阵重构的估计性能改善方法;最后,通过仿真实验验证了单比特量化下宽带辐射源信号定位的有效性,对比分析了参数估计的性能。该研究成果旨在为实际工程应用提供理论支撑。

Based on the advantages of 1-bit quantized receiver such as small size, high sensitivity, large instantaneous bandwidth and real-time signal processing, the parameter estimation performance of wideband signal source under 1-bit quantized measurements is analyzed through theory and simulation. Firstly, two typical parameter estimation methods of wideband signal source are briefly introduced. Secondly, the theoretical derivation formulation of 1-bit quantized measurements is described and an improvement method of estimation performance based on covariance matrix reconstruction is introduced. Finally, the effectiveness of wideband signal source localization under 1-bit quantized measurements is verified by simulations and the estimation performance is compared with the case of unquantized measurements. The results of this paper are intended to provide theoretical support for practical applications.

TN957.51

国家自然科学基金资助项目; 国防科技 大学科研计划项目