基于预方位处理的双基阵方位-线谱测距方法

通过研究运动目标与观测平台保持匀速直线运动时目标方位随时间的变化规律,得出二者近似满足二次曲线的关系,以此为基础提出了一种基于二次曲线模型的目标观测方位序列的滤波预处理方法,然后将经过滤波预处理后的目标方位序列连同目标的某一特征线谱信息用于双基阵声纳被动测距。计算机仿真计算结果表明,目标方位序列经滤波预处理后的双基阵方位-线谱测距方法较预处理前能够更加精确地估计目标的距离。

Study on two arrays bearing-line spectrum ranging based on preprocessing bearings

By analyzing the case in which an observer keeps moving with constant course and velocity,it is found that the relationship between the bearings of a target and the time is approximate quadratic.Thus a preprocessing method of filtering the target bearings observed by two arrays is proposed.The preprocessed bearings and the characteristic line spectrum of the target are used for the dual-array passive ranging.Simulation results show that after the preprocessing the range of target can be estimated more precisely.