基于单反射模型的混合定位算法研究

Study on hybrid location algorithm based on Single Reflect Model

摘要:

针对现有定位算法抗非视距能力弱、且对移动台求解时往往需要一个比较精确初始解的问题，利用移动台和散射体的几何位置关系，基于单次反射圆模型提出了一种抑制非视距误差的波达时间/波达角混合定位算法。定位过程中将散射体视为虚拟基站，根据最大散射半径确定移动台的可能位置范围，在该范围内搜寻所有满足约束条件的位置点，对这些点使用加权平均处理方式以提高定位精度，最后结果即为移动台估计位置。计算机仿真表明了算法的有效性。。

Abstract:

Aiming at the problem that the existing location algorithms that have low anti non line of sight (NLOS) ability, and often require a more accurate initial estimate in the calculation. In the Geometry Based Single-Bounced (GBSB) statistical model, through the geometric relationships between the mobile station (MS) and the scatter, A TOA/AOA hybrid location algorithm is proposed to suppress the non line of sight error. In the process of positioning, scatters are regarded as virtual base station (BS), and according to the maximum scatter radius can determine the possible location range, after the search of all point that satisfy the constraints, by using the distance weighted average method can improve the positioning accuracy, and the final result is the location of the mobile station. Computer simulations show the effectiveness of the algorithm.