原始笔记链接:https://mp.weixin.qq.com/s?__biz=Mzg4MjgxMjgyMg==&mid=2247486665&idx=1&sn=6a3174ae4412f32160a4348c84765480&chksm=cf51be30f82637265c90104969e2bbfe0244eac26f7b15e66782bd4698eacaedba3141f4153c#rd
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IEEE Access 2023 | Precise 2D and 3D Fluoroscopic Imaging by Using an FMCW Millimeter-Wave Radar
毫米波雷达综述论文阅读笔记: IEEE Access 2023 | Precise 2D and 3D Fluoroscopic Imaging by Using an FMCW Millimeter-Wave Radar
Abstract
- 本文
- utilized MIMO-SAR to achieve 2D and 3D imaging
- 方法
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analyzing IF signal from transmitted and received chirp signals
✅ ⇒ \Rightarrow ⇒ obtained Range FFT spectra with object distance and reflection intensity info
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Integration of reflection intensity
✅ ⇒ \Rightarrow ⇒ provide 不同距离下的综合图象
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Developed data processing techniques for 3D imaging
-
- 实验结果
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对箱子内隐藏物体的高分辨成像: spatial resolution < 1 mm
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重建穿着衣服的人的表面图像 :3D image of clothed human body surface
✅ 能够 identify concealed dangerous objects
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I. INTRODUCTION
mmWave (30-300 GHz) have gained research attention for imaging due to advantages
- imaging through obstacles
- 无安全风险
- 全天时全天候
本文目标:毫米波precise 3D shape measurement and processing
- 用于非接触安检
挑战1:系统体积
- 已有方法:系统过大、成本高
- 本文:使用TI IWR1443, 成本低
挑战2:曲面成像
- 已有方法:平面物体成像
- poor visibility due to lack of 3D contour data processing
- 本文:3D contour data processing
- 处理点云,to faithfully reconstruct 3D shapes
II. MILLIMETER-WAVE FMCW RADAR SYSTEM
-
系统概述
- IWR1443 mmWave module
- mounted on 2-axis stage for X-Z scanning
- 77-81 GHz range, 40 μs duration
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数据处理
-
Received signal ⇒ \Rightarrow ⇒ IF signal
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IF signal ⇒ \Rightarrow ⇒ Range FFT spectrum
✅ each peak in the spectrum reflects the position of the object surface
-
-
MIMO-SAR
- MIMO: multiple Tx and Rx antennas
- SAR: virtual track, transmit and receive signals while moving
- Range resoltuion: 3.75 cm ( Δ r = c 2 B \Delta_r = \frac{c}{2B} Δr=2