精准的距离测量对于卫星编队飞行、行星空间定位、大型结构形状测量、微小位移测量以及工业制造测量等方面具有重要意义。近年来, 基于飞秒激光频率梳的测距技术以其测量速度快、准确度高等优点成为国际研究热点。在简要阐述飞秒激光频率梳原理特性基础上, 分析了目前国内外主要的飞秒激光频率梳测距的原理及测距结果, 包括飞行时间法、多波长干涉法、双频率梳法、空间色散干涉法、实时色散傅里叶变换法以及多技术综合测距法。简要介绍了在测量过程中对空气折射率修正和色散补偿方法, 对各类测距方法进行了对比总结, 着重介绍了基于飞秒激光频率梳的测距最新研究进展。

Precise ranging system is of key importance in fields like multiple satellites flying formation, planets spatial positioning, shape measurements of large-scale structure, measurement of tiny displacement and measurement in commercial manufacture. For the advantages of fast measuring speed and high precision, the distance measurement technique with femtosecond optical frequency comb has become the focus of study in recent years. Based on a brief introduction of basic theory and main applications of femtosecond optical frequency comb, several distance measurements and results were given, including time-of-flight method, multi-wavelength method, dual combs method, spatial dispersive interferometry method, method based on real-time dispersive Fourier transformation and multi-technique method. The approaches of atmospheric refractive index correction and dispersion compensation were briefly introduced. A comparison and a summary of these methods were given and the latest progresses were introduced.