Absolute distance interferometry using multiwavelength lasers：theories and progress review

Absolute distance interferometry (ADI) for large length measurements has been studied for several decades.In this period,many breakthroughs in ADI art have been achieved.Recent years,this technique has came to maturity in the subject of long distance measurement.Starting from the point of the detailed description of ADI principles,this paper reviews the development history of ADI,analyses the current state and future trends of ADI emphasizes the application of the multiwavelength infrared lasers in this subject.