基于距离点偏移的140ghz波段雷达精确三维成像方法

Yuta Sasaki, S. Kidera, T. Kirimoto
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引用次数: 4

摘要

超宽带(UWB)毫米波雷达在实现更高的空间分辨率方面具有很大的优势,在近距离传感中的避碰或目标识别方面具有广阔的应用前景。本文以140 GHz波段雷达系统为研究对象,该系统具有更宽的频率范围和更紧凑的雷达模块等显著优势。针对这一应用,我们最初开发了一种基于三维目标边界提取方案的精确高速成像方法,称为距离点迁移(RPM)。本文介绍了现有的RPM雷达,以实现多接收机的快速数据采集。为了提高计算成本和精度,我们在原有的多静态RPM方法的基础上,引入了距离点选取和孤立点消除的预处理和后处理算法。以140 GHz雷达系统为例进行了数值模拟,结果表明,与原RPM方法相比,该方法实现了更高的三维成像效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Accurate 3-D Imaging Method Based on Range Points Migration for 140GHz-Band Radar
Ultra-wideband (UWB) millimeter wave radar has a great advantage for achieving higher spatial resolution and is promising for collision avoidance or target recognition in short range sensing issue. In this paper, we focus on the 140- GHz band radar system, which has a significant advantage for wider frequency range and more compact radar module. For such application, we have originally developed an accurate and high-speed imaging method named as range points migration (RPM), which is based on a 3-D target boundary extraction scheme. This paper introduces the existing RPM radar to achieve fast data acquisition with multiple receivers. To enhance a computational cost and accuracy, we newly introduce the pre- and post-processing algorithms for the original multi-static RPM method, as range points selection and isolated points elimination. Results from numerical simulations assuming 140 GHz radar system, demonstrate that the proposed method accomplishes more efficient 3-D imaging compared with that obtained by the original RPM method.
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