基于高阶累计量的时延估计研究  

Research of time delay estimation based on high-order cumulant

作　　者：栾风虎 李玉峰[1] 于学明[1] 司锡才[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001

出　　处：《黑龙江大学自然科学学报》2010年第2期260-263,共4页Journal of Natural Science of Heilongjiang University

基　　金：国防基础研究基金资助项目(A2420061104-06)

摘　　要：在单站非合作无源定位中,TDOA的获取至为重要。针对传统以信号的二阶统计量为数学工具的TDOA估计存在对加性噪声敏感缺点,提出利用三阶或高阶统计量估计信号TDOA。该方法最大优点是能够有效抑制高斯背景噪声(白噪声和色噪声),适用于低信噪比信号的TDOA估计,最后利用Matlab仿真证明了其有效性。The obtain of TDOA is critical in SOPLAT. Concerning additive noise shortcomings of TDOA estimation using traditional mathmetical tool of second-order statistics of signals, take advantage of three-order or high-order statistics to estimate the TDOA of signal. The biggest advantage of this method is that it can restrain Gaussian noise （white noise and Colored noises）effectively. Thus it can be applied to TDOA estimation of lower SNR signal. In the end the validity was proved using Matlab simulation.

关 键 词：无源定位 时延估计 弱信号检测 

分 类 号：TN958.97[电子电信—信号与信息处理]