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1·Detecting sonar pulse transmitted by an active sonar, it is called sonar pulse detection.

声呐脉冲侦察是利用目标主动声呐发射的脉冲信号来探测目标的技术。

2·The main task of it is to measure the working parameter of active sonar and track the target.

其主要任务是侦察目标主动声呐的工作参数，对目标实施跟踪。

3·This dissertation studies and analyses active sonar reverberation model and anti-reverberation signal processing.

本论文研究并分析了主动声呐混响模型以及抗混响信号处理。

4·This method is greatly increased in the high-intensity direct wave interference under active sonar echo extraction accuracy.

该方法极大地提高了在高强度直达波干扰下主动声呐提取目标回波的精度。

5·In the littoral environment, the bottom scattering is one of the most important factors for limiting the performance of active sonar.

在浅海环境中，海底散射是影响主动声纳性能的最主要因素之一。

6·The U. S. Navy plans to deploy a new submarine detection system, known as Low Frequency Active Sonar (LFA), throughout 80% of the world's oceans.

在世界的 80% 的大海各处， 美国海军计划部署一个新的海中发现系统， 即是低的频率活跃的声纳 （LFA） 。

7·For the active sonar operating in the reverberation-limited environment, reverberation is one of main factors restricting the performance exertion.

就工作在混响限制区域的主动声纳而言，混响成为限制声纳性能发挥的主要因素之一。

8·In this thesis, the signal waveforms of an active sonar in shallow waters are studied, in particular, the structure of wideband Doppler sensitive signals are emphasized.

浅海环境下主动声纳具体信号形式尤其是宽带多卜勒敏感信号波形结构特点分析与检测技术是本论文研究的主要内容。

9·This paper analysised the possibility of using the adaptive line spectrum enhancer with LMS to improve the detection range of active sonar according to its characteristics.

本文针对主动声纳的特点，分析了利用LMS算法的自适应线谱增强器提高主动声纳作用距离的可行性。

10·With analyzing the detecting procedure of Low-frequency active sonar and emulating about it, the Optimum Detection frequency Band of Low-frequency active sonar were researched.

本文通过对低频主动声纳的主动声纳方程的分析与声学探测过程的仿真，初步研究了低频主动声纳在不同距离上的最优探测频率问题。