摘要
针对脉冲串序列信号的目标定位任务,传统的单脉冲到达时间差定位方法由于测量单个脉冲的到达时间产生的误差可能偏大,而导致目标定位精度不能满足实际工程需求。现提出两种优化定位精度的方法,前者是针对在脉冲串未出现缺失的条件下,利用最小二乘法计算两个基站接收到的脉冲串到达时间差;后者是针对在脉冲串出现缺失的条件下,利用序列相似性原理对脉冲串到达时间差进行搜索,两者都能减小测量误差对整个定位系统的影响,提高整个系统的定位精度。
Aiming at the target location task of pulse train signals,the traditional single pulse time difference of arrival(TDOA)location method can not meet the actual engineering requirements because of the large error caused by measuring the arrival time of a single pulse.Two methods are proposed to optimize the positioning accuracy.The former is to calculate the arrival time difference of the pulse train received by two base stations without missing the pulse train with the least square method.The latter is to search the arrival time difference of the pulse train by using the principle of sequence similarity under the condition of missing the pulse train.Both methods can reduce the influence of measurement error on the whole positioning system and improve the positioning accuracy of the whole system.
作者
李世豪
王建
LI Shi-hao;WANG Jian(No.724 Research Institute of CSIC,Nanjing 211106,China)
出处
《火力与指挥控制》
CSCD
北大核心
2020年第8期68-73,共6页
Fire Control & Command Control
基金
江苏省自然科学基金资助项目(BK20160852)。
关键词
脉冲串序列
时差定位
测量误差
TDOA
序列相似性
梯度下降算法
GDOP
pulse train sequence
time difference location
measurement error
TDOA
Sequence similarity
gradient descent algorithm
GDOP
作者简介
李世豪(1995-),男,江西上饶人,硕士研究生。研究方向:序列信号信息处理。
