Study on time deviation detection method and experiment of photoelectric theodolite camera

Xin Zhou; Zhenkun Wang; Rui Cao; Xuyang Li; Yanfang Li; Xiaogang Zhu; Kunjun Hu; Xiang Zhai

doi:10.1117/12.2664755

4 April 2023 Study on time deviation detection method and experiment of photoelectric theodolite camera

Xin Zhou, Zhenkun Wang, Rui Cao, Xuyang Li, Yanfang Li, Xiaogang Zhu, Kunjun Hu, Xiang Zhai

Proceedings Volume 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications; 1261724 (2023) https://doi.org/10.1117/12.2664755
Event: 9th Symposium on Novel Photoelectronic Detection Technology and Applications (NDTA 2022), 2022, Hefei, China

Abstract

When the photoelectric theodolites are used to measure the same object, the values of timing equipment between the devices have deviation as well as the response of the camera and other devices also has difference. This situation leads to certain deviation of the synchronization of each device. At the same time, the exposure time of the camera deviates from the set value, which affects both the center exposure system and the front exposure system. The above situation leads to the time misalignment error of the target image when multiple photoelectric theodolites synchronously observe the same target. This error affects the accuracy of data processing and makes the calculation result unable to meet the measurement equipment of high accuracy undershoot. To measure the exposure time and the time deviation between camera, this paper studied the detection method based on calibrating lamp and experimented with this method. As a result, the detection method based on calibrating lamp can be used to measure exposure time both in visible light and shortwave as well as the time deviation detection. The detection accuracy is up to 5us. This method can be widely used in the camera detection of time deviation in optical equipment.

Citation Download Citation

Xin Zhou, Zhenkun Wang, Rui Cao, Xuyang Li, Yanfang Li, Xiaogang Zhu, Kunjun Hu, and Xiang Zhai "Study on time deviation detection method and experiment of photoelectric theodolite camera", Proc. SPIE 12617, Ninth Symposium on Novel Photoelectronic Detection Technology and Applications, 1261724 (4 April 2023); https://doi.org/10.1117/12.2664755

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KEYWORDS

Light emitting diodes

Cameras

Calibration

Time metrology

Image processing

Signal processing

Design and modelling

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