搜索激光雷达:用于并行测距的单发射机CDMA-Hadamard激光雷达
Optics express
|December 19, 2025
概括
我们开发了一种成本高效的LiDAR系统,使用双调制 (CDMA和Hadamard编码) 进行混合固态并行测距. 这种创新的SEARCH LiDAR架构在信号噪声比低的环境中提供了卓越的性能.
科学领域:
- 光电学和光子学的光电子和光子学.
- 传感器技术 传感器技术
- 计算机视觉 计算机视觉
背景情况:
- 传统的LiDAR系统由于机械扫描的复杂性和高成本而面临限制.
- 现有的并行测距解决方案往往昂贵,缺乏可扩展性.
- 需要为自主系统提供具有成本效益和强大的LiDAR.
研究的目的:
- 提出并展示一种新的,成本高效的,可扩展的LiDAR架构.
- 为了使混合固态平行测距使用单个发射器和接收器.
- 为了提高LiDAR的性能,特别是在杂的环境中.
主要方法:
- 代码分割多重访问 (CDMA) 时间调制与基于哈达马德矩阵的空间编码的集成.
- 开发一个名为SEARCH LiDAR (单发射器和接收器CDMA-Hadamard LiDAR) 的双调制框架.
- 通过波长调整和CDMA编码实现混合固态扫描,然后使用S矩阵进行空间调制.
主要成果:
- 对1D SEARCH LiDAR概念进行实验验证.
- 在不同低信号噪声比 (SNR) 条件下,在3D成像中表现出卓越的稳定性.
- 未来扩展到完全固态2D扫描的可行性得到确认.
结论:
- 拟议的SEARCH LiDAR架构为低成本,高性能LiDAR提供了一条实用的途径.
- 双调制方法在杂环境中显著提高了强度.
- 这项技术适用于下一代自主感知系统.
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