Error correction model based on echo light intensity in pulse laser ranging system

Fan Wang; Weixian Qian; Ye Qian; Wenguang Yang

doi:10.1117/12.2526526

9 September 2019 Error correction model based on echo light intensity in pulse laser ranging system

Fan Wang, Weixian Qian, Ye Qian, Wenguang Yang

Proceedings Volume 11129, Infrared Sensors, Devices, and Applications IX; 111290U (2019) https://doi.org/10.1117/12.2526526
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

In the pulse laser ranging system based on time-of-flight measurement, since different targets have different reflection characteristics, the echo light intensity will affect the leading edge moment received by the range finder, which results in the deviation of the ranging result. In order to address this problem, this paper proposes a leading edge time correction model based on pulse width. The pulse width of the echo is positively correlated with the light intensity, so the pulse intensity can be used to characterize the light intensity and correct the leading edge time. According to Marius law, the leading edge moment acquisition experiments are carried out under different echo intensities produced by polarization state generator (PSG). It has been demonstrated that the presented model is consistent with experimental data. From the analysis and discussion, it is shown that the correction model can effectively correct the error caused by the echo light intensity of the pulsed laser ranging system, thus improving the accuracy of ranging.

Citation Download Citation

Fan Wang, Weixian Qian, Ye Qian, and Wenguang Yang "Error correction model based on echo light intensity in pulse laser ranging system", Proc. SPIE 11129, Infrared Sensors, Devices, and Applications IX, 111290U (9 September 2019); https://doi.org/10.1117/12.2526526

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