摘要
时差定位技术因其隐蔽性好、具有较高的定位精度而得到广泛应用,时差定位的关键在于高精度时差的提取。介绍了2种时差测量方法,一种是基于信道化检测提取信号到达时间的时差测量方法;另一种是在信道化检测基础上,再进行信号相关的时差测量方法。从仿真结果可知,相同条件下,后者的时差测量精度优于前者。
TDOA(time difference of arrival)location is widely used because of its good concealment and high location accuracy.The key of TDOA location is to extract TDOA with high precision.Two TDOA measurement methods are introduced,one method is to extract the TDOA of the signal based on the channelized detection;the other one is to carry out the TDOA measurement of the signal correlation based on the channelized detection,The simulation results show that the accuracy of the latter method is better than that of the former under the same conditions.
作者
罗熙
顾文金
Luo Xi;Gu Wenjin(The 51th Research Institute of CETC,Shanghai 201802,China)
出处
《航天电子对抗》
2021年第3期55-59,共5页
Aerospace Electronic Warfare
关键词
时差测量
信道化
信号相关
TDOA measurement
channelized
signal correlation
