从地板到天花板的线性声源，它在声学上是无限长的，所以会产生柱形波。对于这个我还没有得出结论。

I have not come to conclusions about a line source that extends floor-to-ceiling, is infinitely long acoustically, and thus generates a cylindrical wave.

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本文针对无源声纳对运动声源的被动定位跟踪中的病态问题，提出一种基于线性估计、可减轻病态的新方法。

To solve the problem of the ill-condition in locating and tracking a moving source using passive measurements, a new method based on linear estimation is presented in this paper, the.

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