Yaya Zhang, Yin Guo, Yongjie Ren, Yue Shang, Yang Liu, Jigui Zhu. Study of Drift Error and Its Compensation Method in Absolute Distance Measurement by Optical Frequency Scanning Interferometry[J]. Acta Optica Sinica, 2017, 37(12): 1212001
- Acta Optica Sinica
- Vol. 37, Issue 12, 1212001 (2017)
Fig. 1. Schematic of OFSI distance measurement principle
Fig. 2. Variation curve of optical frequency of reference and measurement beam versus time
Fig. 3. Scanning curve of optical frequency triangular wave
Fig. 4. Spectrogram of interference signal
Fig. 5. Schematic of OFSI absolute distance measurement experiment principle
Fig. 6. 10 times measurement result of the measured target at the distance of 3615.47 mm
Fig. 7. Standard deviation of measurement at different measurement positions with distance of 50 mm
Fig. 8. Residual error of the system (a) before and (b) after compensation
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