Optical frequency combs have developed into powerful tools for distance metrology. In this paper we demonstrate absolute long distance measurement using a single femtosecond frequency comb laser as a ...

Pulse ‘time of flight’ and interferometric measurement have long been two major approaches of laser ranging, with the former featuring simple and robust, suitable for long distance absolute ranging in ...

For many centuries, the principle of triangulation - that is the geometric measurement using three-point relationships - has been relatively well known. In Europe, the land survey method established ...