absolute distance interferometry的用法和样例：
- Output power equalization of laser dual spectrum lines is a special requirement which is put on its laser source by two wavelength beat-wave absolute distance interferometry.
- An absolute distance heterodyne interferometer using a dual longitudinal mode He Ne laser is proposed.
- An optic interferometer system based on optical multiplication for measuring absolute distance was presented.
- Thirdly, different judging criteria, including absolute distance, Euclidian distance and similarity matching, are adopted to match different requirements on recognition speed or accuracy.