摘要
针对匀速直线运动的目标,依据相对运动三角形,利用任意不同时刻的3个方位值计算得到目标初始舷角,进而求取目标航向;基于一元线性回归分析理论,充分利用所测目标时间方位序列,构造系统函数,依此提出一种精度较高的目标航向估计算法;分析了不同运动态势下,观测数据的时间长度和方位精度对估计结果的影响。仿真结果表明,提出的算法精度较高,在观测方位误差相对较大时也同样适用,且随着观测数据时长增加、方位变化率增大以及观测方位精度增高,目标航向的估计结果越稳定。
Aiming at targets performing uniform linear motion,the target course is obtained with intial target course angle calculated by using three azimuths at any different time,according to the relative motion model in torpedo attacking theory.Based on the simple linear regression and bearing sequence,an accurate estimation algorithm of target course is proposed.The influences of the time period of observed data and course accuracy on estimation results are analyzed.The simulation results show that the proposed algorithm is of high accuracy,which is also practicable while the measuring error is relatively large.Moreover,the target course estimation result has the advantage of high accuracy and stablity with the increasing of observed data length,the change rate of azimuth,and the precision of azimuth.
作者
陈喆
戴卫国
王易川
Chen Zhe Dai Weiguo Wang Yichuan(Acoustic Center of Navy Submarine Academy, Qingdao 266100, China)
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2017年第2期320-327,共8页
Chinese Journal of Scientific Instrument
关键词
固定单基地
被动声纳
纯方位
航向
一元线性回归
影响因素
fixed monostatic
passive radar
bearing-only
course
simple linear regression
influencing factor
