与之前的算法进行对比，分析了最大似然函数法在定位精度、实现难易度、通用性等方面的特性。

We analysis maximum likelihood methods in positioning precision, ease of implementation, characteristics of the areas of commonality, compared with the previous algorithm.

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实验证明采用伪似然估计方法构造目标函数在时间复杂度方面比采用似然估计方法要低很多。

And the experimental results show that the time complexity of pseudo-likelihood is much lower than likelihood approach.

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