本文通过将双基地声呐中发射和接收站的测量数据进行融合处理，提出了基于加权最小二乘估计（WLS）的双基地声呐定位优化算法，给出了算法的原理和误差分布。
Weighted least squares (WLS) localization algorithm for bistatic sonar was proposed by fusing the data of transmitter and receiver. The localization principle and error of the algorithm were given.
给出了算法的原理，并通过数值仿真，对不同条件下，双基地系统定位误差的几何分布进行了研究。
The principle of the algorithm is described. Through numerical simulation, the Geometrical Dilution of Precision (GDOP) for two different conditions is given.
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