A UAV Based CMOS Ku-Band Metasurface FMCW Radar System for Low-Altitude Snowpack Sensing

IF 6.9 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE journal of microwaves Pub Date : 2023-11-13 DOI:10.1109/JMW.2023.3327188

Adrian Tang;Nacer Chahat;Yangyho Kim;Arhison Bharathan;Gabriel Virbila;Hans-Peter Marshall;Thomas Van Der Weide;Gaurangi Gupta;Raunika Anand;Goutam Chattopadhyay;Mau-Chung Frank Chang

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引用次数: 0

Abstract

This article presents development of a UAV based frequency modulated continuous wave (FMCW) radar system for remotely sensing the water contained within snowpacks. To make the radar system compatible with the payload requirements of small UAV platforms, the radar electronics are implemented with CMOS technology, and the antenna is implemented as an extremely compact and lightweight metasurface (MTS) antenna. This article will discuss how the high absorption losses of snowpacks lead to dynamic range requirements much stricter than FMCW radars used for automotive and other sensing applications, and how these requirements are met through antenna isolation, leakage calibration and exploitation of the range correlation effect. The article discusses in detail the implementation of the radar system, the CMOS microwave and digital circuitry, and the MTS antenna. The developed radar was mounted on a drone and conducted surveys in both Idaho and Alaska during the 2022-2023 winter season. We present several of those field results.

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基于无人飞行器的 CMOS Ku 波段地表 FMCW 雷达系统用于低空雪层感应

本文介绍了基于无人机的频率调制连续波（FMCW）雷达系统的开发情况，该系统用于遥感雪堆中的水。为了使雷达系统符合小型无人机平台的有效载荷要求，雷达电子元件采用了 CMOS 技术，而天线则采用了极为紧凑轻巧的元表面 (MTS) 天线。本文将讨论雪堆的高吸收损耗如何导致比用于汽车和其他传感应用的 FMCW 雷达更严格的动态范围要求，以及如何通过天线隔离、泄漏校准和利用范围相关效应来满足这些要求。文章详细讨论了雷达系统的实现、CMOS 微波和数字电路以及 MTS 天线。开发的雷达安装在无人机上，并于 2022-2023 年冬季在爱达荷州和阿拉斯加州进行了勘测。我们将介绍其中几项实地结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE journal of microwaves

CiteScore

10.70

自引率

0.00%

发文量

审稿时长

8 weeks