摘要
介绍了低信噪比正弦电压幅值测量用的多重自相关算法和数字相敏解调(DPSD)算法,概述了2种算法的理论依据,给出了2种方法在实际微弱信号检测中的测量结果。通过对实际测量结果的对比分析,确定了这2种方法各自所适用的范围及缺陷。
This paper introduced the methods of multi - layer autocorrelation and DPSD that can be used in weak signal detection. Both methods are used in the real detections and the results of each method are provided. The comparative analysis shows that DPSD can restrain noise strongly, and thereby detect weak signals effectively.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2007年第4期53-55,共3页
Journal of Wuhan University of Technology：Information & Management Engineering
基金
国家863计划重点基金资助项目(2006AA060101)
中国石油天然气集团公司重大科研基金资助项目(06B30201)
关键词
信号检测
微弱信号
自相关
数字相敏解调
signal detection
weak signal
multi- layer autocorrelation
DPSD
