使用曲振幅调制的相位移方法对LiDAR的范围清晰化
Optics express
|September 15, 2023
概括
这项研究引入了一种新的激光曲振幅调制方法,以消除LiDAR中的范围模两可. 这种技术无限扩大了明确的范围,克服了精度和检测性能的局限性.
科学领域:
- 光学和光子学 在光学和光子学.
- 激光技术 激光技术 激光技术
- 信号处理 信号处理
背景情况:
- 范围模两可是振幅调制LiDAR的一个重大挑战.
- 这种模两可的情况在测距精度和明确的范围之间产生了权衡.
- 现有的方法很难克服这些固有的局限性.
研究的目的:
- 为LiDAR系统提出一种新的清晰化方法.
- 在理论上和实践中将明确的范围无限地扩展.
- 为了提高LiDAR中距离检测的性能.
主要方法:
- 使用带有 chirped 振幅调制的激光 (扫描调制频率).
- 采用Chirped振幅调制相位移 (CAMPS) 技术进行高精度相位移检测.
- 将CAMPS与绝对距离测量的新型明确化方法集成.
主要成果:
- 拟议的方法在理论上将明确的范围扩展到无限.
- 超出常规极限的绝对距离可以用<1%的频率扫描进行测量.
- 在使用分散调整扫描激光 (DTSL) 的非机械光谱扫描激光雷达 (NMSL) 系统中成功地证明了歧义.
结论:
- 这种新的 chirped 振幅调制方法有效地解决了 LiDAR 中的范围模糊性问题.
- 与此方法集成的CAMPS技术允许精确,远程距离测量.
- 这一进步在非机械扫描激光雷达系统中具有潜在的应用.
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