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介绍一种新的信号分析方法──“视在方位序列分析”方法。介绍了该方法的理论基础和基本思想，以及在水声信号处理领域的应用价值。提出了一种新型检测器──视在方位序列方差检测器（ＶＰＢＤ）。在混响背景条件下，该检测器具有比ＶＩＦＤ更优良的性能。通过计算机仿真研究和海试数据处理验证了其有效性。
This paper introduces a new signal analysis method ─ ─ “apparent azimuth sequence analysis” method. The theoretical basis and basic idea of this method are introduced, and its application value in underwater acoustic signal processing is introduced. A new type of detector - apparent azimuth sequence variance detector (VPBD) is proposed. Under reverberant background conditions, the detector has better performance than VIFD. Its effectiveness is verified by computer simulation and sea trial data processing.