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首页> 外文会议>Conference on Independent Component Analyses, Wavelets, and Neural Networks Apr 22-25, 2003 Orlando, Florida, USA >The Effect of Non-Uniform Motion on the Doppler Spectrum of Scattered Continuous Wave Waveforms
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The Effect of Non-Uniform Motion on the Doppler Spectrum of Scattered Continuous Wave Waveforms

机译：非均匀运动对散射连续波形多普勒频谱的影响

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摘要

In this paper, we formulate the effect of non-uniform motion on radar wave forms. When there is non-uniform motion, the Doppler effect can produce complex behavior in the frequency spectrum so that a simple frequency analysis does not easily capture all of the target's behavior. When an object is undergoing non-uniform motion, the Doppler spectrum losses its ideal point like characteristics and starts to show broadening when the object is undergoing motion characteristics such as accelerations, jerks or exponential slowdowns. Such motion laws can lead to both broadening and multiple peaks in the Doppler spectrum under the right circumstances. This suggests that the effect of nonuniform Doppler is an area that is ripe for a time-frequency analysis. Both of these types of spectral characteristics produced by nonuniform motion, such complex Doppler has been characterized as micro-Doppler by Chen. In this paper, we formulate the effect of non-uniform motion on radar waveforms. Then we consider several specific examples of non-uniform motion on a continuous wave waveform. We then relate this analysis to micro-Doppler and then the application of time-frequency methods to these type of signals.
机译：在本文中，我们阐述了非均匀运动对雷达波形的影响。当运动不均匀时，多普勒效应会在频谱中产生复杂的行为，因此简单的频率分析不会轻易捕获目标的所有行为。当物体进行不均匀运动时，多普勒频谱会失去其理想点之类的特性，并在物体经历诸如加速，突跳或指数减速之类的运动特性时开始变宽。在适当的情况下，这样的运动定律会导致多普勒频谱同时变宽和出现多个峰值。这表明非均匀多普勒效应对时频分析是一个成熟的领域。这两种类型的频谱特征都是通过不均匀运动产生的，因此Chen将复杂的多普勒定为微多普勒。在本文中，我们公式化了非均匀运动对雷达波形的影响。然后，我们考虑连续波波形上非均匀运动的几个具体示例。然后，我们将这种分析与微多普勒相关，然后将时频方法应用于这些类型的信号。

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