分析了已有的序列线性复杂度分析方法，提出了用近似熵算法计算混沌运动的测度熵，作为衡量混沌伪随机序列复杂度的标准。
In this paper, the conventional pseudo-random sequence linear complexity is discussed, and a new criterion is proposed, based on the approximate entropy.
当潜艇利用双基阵进行目标跟踪时，把双基阵跟踪等效成单站跟踪，再采用伪线性估计器对目标的运动要素进行解算。
When dual-array tracking was applied by submarine, dual-array tracking was changed into single-array tracking, and then the movement factors of target were solved by pseudo-linearization estimator.
当潜艇利用双基阵进行目标跟踪时，把双基阵跟踪等效成单站跟踪，再采用伪线性估计器对目标的运动要素进行解算。
When dual-array tracking was applied by submarine, dual-array tracking was changed into single-array tracking, and then the movement factors of target were solved by pseudo-linearization estimator.
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