基于声纳目标多线谱信息的目标运动参数估计  

Target Motion Parameter Estimation Based on Sonar Target Multi-line Spectrum Information

作　　者：吕琳[1] 费志刚[1] 冯达[1] 

机构地区：[1]91388部队92分队

出　　处：《舰船电子工程》2013年第4期135-137,共3页Ship Electronic Engineering

摘　　要：在方位信息基础上,利用频率信息可以在本艇不机动条件下完成对目标的观测,而一般情况下,水下目标辐射噪声存在多个线谱频率,根据单阵或多阵所测得的目标方位和多线谱频率信息建立量测方程,对于求解这种非线性问题,利用一种改进极大似然估计方法避免残差值较大时收敛性存在的不足,完成对目标的运动参数进行估计。通过蒙特卡罗仿真表明,此算法具有比方位-单频率算法收敛速度更快、精度更高、稳定性更好等优点。由于线谱一般都处于低频段,信噪比高,因此该算法可应用于远距离的水下被动目标运动参数估计。Azimuth information based on the use of the frequency information of the observation of the target can be completed in the conditions of the boats are not motorized, under normal circumstances, the underwater target radiated noise there is more than one line spec trum frequency, based on a single array or array measuredgoal orientation and multi-line spectrum frequency information to establish the measurement equation for solving this non-linear problem, the use of an improved maximum likelihood estimation method to avoid larger re- siduals convergence shortcomings, the completion of the movement of the targetparameter estimation. Monte Carlo simulation shows that this algorithm than orientation - a single frequency algorithm converges faster and higher precision, better stability. Line spectra are generally in the low frequency band and high signal-to-noise ratio, the algorithm can be applied to long-distance underwater passive target motion pa- rameter esttmatlon.

关 键 词：多频率线谱 方位 目标运动参数 

分 类 号：TN929.3[电子电信—通信与信息系统]