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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Adaptive Through-Wall Indication of Human Target with Different Motions
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Adaptive Through-Wall Indication of Human Target with Different Motions

机译:具有不同运动的人类目标的自适应穿墙指示

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摘要

Through-wall indication of human targets is highly desired in many applications. Generally, human targets behind wall are noncooperative, and rare prior knowledge about the circumstance behind wall could be available. Thus, it requires the ability to indicate human targets with different motions from clutters. To investigate this problem, we first examine the conventional time-domain indication methods, and find that their performances are controlled by the historical pulse number adopted to estimate background, which corresponds to the tap-length from the angle of filter. Then, based on an intermittent mode of human target echoes, we define the optimum tap-length as the shortest tap-length that makes the filter output signal-to-clutter-and-noise ratio reach maximum and develop an adaptive indication method with a gradient tap-length control scheme to search the optimum tap-length. Finally, through-wall experiments with an impulse through-wall radar demonstrate that the proposed method can obtain a good adaptive indication performance on human target with different motions.
机译:在许多应用中都非常需要人的目标的穿墙指示。通常,在墙后的人类目标是不合作的,因此关于墙后情况的鲜有先验知识可能会提供。因此,它需要能够以杂波不同的动作指示人类目标。为了研究这个问题,我们首先检查了传统的时域指示方法,发现它们的性能受用于估计背景的历史脉冲数控制,该历史脉冲数与滤波器角度的抽头长度相对应。然后,基于人类目标回波的间歇模式,我们将最佳抽头长度定义为使滤波器输出的信噪比达到最大的最短抽头长度,并开发了一种自适应指示方法梯度抽头长度控制方案以搜索最佳抽头长度。最后,利用脉冲穿墙雷达进行穿墙实验表明,该方法可以在不同运动的人目标上获得良好的自适应指示性能。

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