摘要
针对被动测距的性能严重依赖于时延的估计精度,提出设计一种基于广义互相关法的高精度的时延估计器,分析了时延估计器原理,得出了测距时延差ε的真值,仿真分析时采用时延差内插算法,对四点内插法时延估计精度进行了分析,满足了实际需求。
Passive ranging performance is heavily dependent on the delay estimation accuracy.A high-precision time delay estimator based on generalized cross correlation method is proposed,which has analyzed the principle of time delay estimator.The true value ε of ranging delay differential is obtained.Simulation used interpoiation algorithm of delay differential.The accuracy of time delay estimation by four-point interpolation method is analyzed.It indicates that the method meets the practical needs.
出处
《舰船电子工程》
2011年第5期149-152,共4页
Ship Electronic Engineering
关键词
广义互相关法
被动测距
时延估计
generalized cross correlation method
passive ranging
delay estimation
