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1.79GHz采集速率绝对距离测量使用尼酸盐电光

Yifan Qi¹, Xingyu Jia¹, Jingyi Wang²

¹State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China.

Nature communications

|March 26, 2025

概括

本研究引入了一种新的超快速绝对距离测量方法,用于自动驾驶汽车. 重复率调制频率 (RRMFC) 实现了前所未有的采集速率,使其能够精确地传感环境.

科学领域:

光子学和光学工程的工程.
自主系统技术技术自主系统技术
李达尔发展发展

背景情况:

自动驾驶汽车需要高速,精确的3D环境传感.
当前的LiDAR系统在采集率和测量范围之间面临着权衡,这限制了性能.

研究的目的:

为自动驾驶汽车开发一种超快的绝对距离测量方法.
克服现有的LiDAR技术在速度和距离方面的局限性.

主要方法:

用尼奥巴特电光启用方法的演示:重复率调制频率 (RRMFC).
集成尼酸盐相调节器,具有低半波电压 (1.47 V),可实现50多个侧带.
在4微秒内调整12 GHz的重复率.

主要成果:

获得了高达1.79 GHz的采集率,超过了最先进的技术水平超过4个数量级.
通过检测时间域干扰峰值,实现连贯的距离测量.
证明了对绝对距离测量至关重要的大量非模糊性范围.

结论:

RRMFC为自动驾驶汽车提供了LiDAR技术的重大进步.
该方法允许使用单个激光在高速情况下感知微细环境细节.
这项技术提高了人工智能支持的自动驾驶的安全性和能力.

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