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首页> 外文会议>2011 International Conference on Electronics, Communications and Control >Underwater targets detection using interference spectrum
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Underwater targets detection using interference spectrum

机译：使用干扰频谱进行水下目标检测

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The underwater sound radiated by vessels consists of deterministic mechanical sounds, propeller noise and hydrodynamic noise. Though many methods have been done to control the sound radiated by vessels, flow noise is always present around a moving vessel. Time-frequency analysis is often used as a method to observe energy distribution of ship noise. In the time-frequency distribution picture of surface ship noise, parabolic patterns are evident. They are caused by multipath transmission of vessel noise. In the paper, using interference spectrum for target detection is discussed. And the superimposed interference pattern is utilized to find moving vessel range. Finally the speed and the closet point of approach estimation of a moving vessel is given using the method.
机译：船只发出的水下声音包括确定性的机械声音，螺旋桨噪声和水动力噪声。尽管已经采取了许多方法来控制容器发出的声音，但是在移动的容器周围始终存在流动噪声。时频分析通常用作观察船舶噪声能量分布的一种方法。在水面舰船噪声的时频分布图中，可以看到抛物线形。它们是由船只噪声的多径传输引起的。在本文中，讨论了使用干扰频谱进行目标检测。叠加的干涉图样被用来寻找移动的船只范围。最后，使用该方法给出了移动船舶进近估计的速度和接近点。

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