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Youngjoon Cho,Hamidreza Raei,Kyihwan Park 제어로봇시스템학회 2021 제어로봇시스템학회 국제학술대회 논문집 Vol.2021 No.10
ToF(Time of Flight) LiDAR detects the target distance by measuring the timing difference of the pulsed laser beam to the target and received signal. The intensity of the received signal varies with a number of factors. The measured timing can be vary depending on the different magnitude of the signals. It is required to control the amplifying gain to ensure accurate distance measurement with wide range of intensity. In this work, the distance accuracy is investigated when TDC measures the pulse signals. The electronic characteristic of MOSFET is treated and transformed to use it as a variable resistor. Auto Gain Control method is introduced by implementing MOSFET which has a variable resistance characteristics. As a result, simulations are carried out to investigate the AGC operation. The limitation and additional frequency issues will be treated for a next work.