量子电子学报2026，Vol.43Issue(2)：196-209,14.DOI:10.3969/j.issn.1007-5461.2026.02.003
基于光-微波映射的大量程频域干涉测距技术研究
Large-range frequency-domain interferometric ranging technology based on light-microwave mapping
摘要
Abstract
This paper presents a large-range frequency-domain interferometric ranging method based on light-microwave mapping.Theoretical analysis shows that the frequency-domain interferometric signal can be periodically mapped from the optical frequency-domain to the microwave frequency-domain through photoelectric conversion,enabling high-resolution acquisition in the microwave frequency-domain.This overcomes the limitations caused by the relatively low spectral measurement resolution and provides the possibility to expand the measurement range of optical frequency-domain interferometry.A principle verification experiment is carried out,and absolute distance measurement with an accuracy of 11.1 μm is achieved within a range of 5 m.Compared with the existing optical frequency-domain interferometric ranging technology,this method expands the measurement range by about 30 times while maintaining a ranging accuracy of around 10 μm.In addition,a fast and high-fidelity sampling method for wide-spectrum frequency-domain interferometric signals is also studied.And it shows that within a range of 5 m,as the sampling time gradually increases to 10 μs,the ranging standard deviation ultimately remains within 200 μm.Finally,the kilometer-level ranging capability of this technology is experimentally investigated,and it shows that millimeter-level ranging accuracy can be achieved within the microsecond scale,providing a new solution for optical frequency-domain,interferometric,fast absolute distance measurement with high-precision and large-range.关键词
光学/光学频域干涉/光-微波映射/传感器设计/信号处理/绝对距离测量Key words
optics/optical frequency-domain interference/light-microwave mapping/sensor design/signal processing/absolute distance measurement分类
数理科学引用本文复制引用
刘天赐,米江,周笑阳,刘海,娄金伟,高涵宇,唐隆煌..基于光-微波映射的大量程频域干涉测距技术研究[J].量子电子学报,2026,43(2):196-209,14.基金项目
国家重点研发计划(2024YFF0619204),国家自然科学基金(U2241276) （2024YFF0619204）
