Collection Method of Arbitrary Laser Echo Based on STM32. Issue 1 (May 2021)

• Record Type: Journal Article
• Authors: Li, Weihao; Zhou, Guoqing; Zhou, Xiang; Tan, Yizhi; Lin, Gangchao; Li, Xianxing; Deng, Ronghua
• Is Part Of: IOP conference series. Volume 783:Issue 1(2021)
• Publication Date: 2021-05
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/783/1/012146
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: When LIDAR measures the water depth, in most cases the echo signal is more complex, with more backscattering, and it is difficult to observe different parts of the waveform separately, especially the underwater echo signal. Therefore, this paper uses an STM32 controller to design a signal generator to send out pulse signals, which act on the detection device PMT in the LIDAR detection system to control the start and stop of the PMT receiving channel. By adjusting the frequency, duty cycle, and other parameters of this signal generator, the arbitrary part of the waveform can be collected, and the waveform is not disturbed. Using the STM32 instead of a traditional signal generator can reduce system power consumption and load capacity.