摘要
舰艇编队组网定位系统中距离维量测受舰艇摇摆影响较小,因此利用多传感器纯距离信息进行目标定位具有精度高的特点。基于多传感器纯距离定位算法中的解二次方程法,研究通过对多传感器进行网络组合,从n个传感器选n 1个传感器构成n个子网。再利用不同子网对同一探测目标的定位差值,构建了系统误差观测模型;推导给出了多传感器距离误差配准算法;分析了系统误差条件下定位系统的GDOP表达形式。通过采用相对阈值和截断奇异值方法减轻矩阵病态性,提高了估计的稳健性。仿真结果表明给出的算法对于纯距离误差估计的有效性。
Range measurements are unaffected by the swaying of ships platform, so location algorithm using range measurements has a higher precision. An algorithm was proposed that chose n-1 sensors from n sensors network to form n subnetworks based on solving quadratic equation algorithm, the difference of location value between different subnetworks was used to build a model for estimating range-only system errors, the formula for errors estimation was obtained, and the formula of GDOP was provided when system errors existed. Using relative threshold and TSVD could lighten bad effect of ill condition of matrix and improve robustness of estimation results. Simulation results prove the effectiveness of the algorithm.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2013年第10期2509-2514,共6页
Journal of System Simulation
基金
国家重点基础研究发展计划(613101)
关键词
系统误差
距离误差配准
网络组合
仿真分析
病态性
system error
range-error registration
networks combination
simulation analysis
ill-condition
