多传感器极大似然定位中站址误差的影响

针对多传感器目标定位中站址误差对定位精度的影响.首先给出了站址误差的传播模型,然后通过理论和仿真对模型进行了详细的分析.分析表明,站址误差导致的定位误差是各站址误差的代数和,且其系数满足"同向传播系数之和为1,非同向传播系数之和为0"的关系.分析还表明,该误差可以分离为两部分:一部分是"确定性部分".取决于目标和传感器的几何位置关系:另一部分是随机部分,依赖于传感器的量测噪声.此外还证明了该模型虽然是基于极大似然法推导而来的,但却是一个通用模型,只需经过很小的改动即可用于其他定位方法站址误差的影响分析.

Effects of Stations' Position Errors on the ML Position Estimation in Multisensor System

This paper deals with the target location estimation error due to stations' position errors in multisensor system.The propagation model of stations' position errors is developed.Then the model is analyzed theoretically and simulationally.It's found that the error is the algebraic sum of the surveyed position errors of each sensor and these coefficients meet the relation that the equidirectional propagation coefficients equal to 1,the non-equidirectional propagation coefficients equal to 0.It's also found th...