LIDAR SIGNAL RECEIVING CIRCUITS, LIDAR SIGNAL GAIN CONTROL METHODS, AND LIDARS USING THE SAME

摘要

The present application relates to a Lidar that includes a laser transmitter to emit a laser beam; an optical processing circuit. The optical processing circuit is configured to receive the laser beam reflected from a target object and convert the reflected laser beam to a photocurrent signal, and convert the photocurrent signal from an optical receiver to a voltage signal. The Lidar also includes a gain control circuit, connecting to the optical processing circuit; and a controller, connecting to the gain control circuit, to adjust a gain of the optical processing circuit via the gain control circuit and based on an amplitude of the voltage signal.