基于Tikhonov正则化的多站测时差定位方法  

Multi-station TDOA Localization Algorithm Based on Tikhonov Regularization

作　　者：纪彦星 潘江怀[2] 

机构地区：[1]91404部队 [2]江苏自动化研究所

出　　处：《舰船电子工程》2016年第4期58-61,共4页Ship Electronic Engineering

摘　　要：论文针对多站测时差定位中,由于传感器布局不合理等因素所引起的定位估计结果不稳定、发散甚至无效的情况,提出了一种基于Tikhonov正则化的稳健定位方法,该方法对各站的布局要求不高,能有效兼顾定位参数估计的分辨率和方差,实现了对观测方程中随机观测噪声的有效抑制,具有较好的工程应用价值,数值模拟结果表明,定位结果相比传统算法精度和稳定性更高。Aiming at the invalidation of localization caused by the irrationality of the sensor distribution in multi-sation,a new robust localization algorithm based on Tikhonov regularization is proposed.The new method gives attention both to the resolution and the square error of the estimation results,restrains the uncertain part while keeps the certain part of the observation noise,and guarantees the validation of new method on multi-station TDOA localization even the the sensor distribution irrationally.It has a high vallue of engineering applicaton.The results of numerical simulation show that,the positioning result has higher accuracy and stability compared with traditional algorithm.

关 键 词：测时差 无源定位 TIKHONOV正则化 稳健估计 定位方法 

分 类 号：TN911.7[电子电信—通信与信息系统]