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Updated: Jul 9, 2025

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对称的双侧带相反叫的差分器FMCW LiDAR

Yanan Zhi, Yujiao Sun, Yu Zou

|November 29, 2023

概括

一个新的差分频调制连续波 (FMCW) LiDAR系统实现了对远程,非静止目标的高精度距离和矢量速度测量. 这项技术克服了噪音和非线性问题,提供了强大的实时性能.

科学领域:

光学工程是指光学工程.
遥感遥感遥感遥感
激光技术激光技术激光技术

背景情况:

传统的LiDAR系统面临着噪音和非线性方面的挑战.
精确测量远程,非静止目标需要先进的技术.

研究的目的:

提出和实验证明一个差异化的FMCW LiDAR系统.
为了实现高精度,同时测量范围和矢量速度.
为了克服连贯长度,非线性和外部噪声的局限性.

主要方法:

通过光学相位调制和过,产生对称相反的激光束.
采用光学相位和正方形解调来消除节拍信号的声.
使用微分处理和快速里埃转换 (FFT) 来进行数据分析.

主要成果:

实时同时测量范围和矢量速度的测量成功实现.
该系统表现出对内部激光相位噪声和外部噪声 (流,斑点,振动) 的免疫力.
速度测量不受激光频率扫描非线性影响.

结论:

不同的FMCW LiDAR方法有效地克服了连贯长度,非线性和外部噪声障碍.
这项技术使远距离,快速移动的目标能够同时实时测距和测速.
拟议的方法为先进的遥感应用提供了强大的解决方案.

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