Abstract: A light detection and ranging (LIDAR) system may include one or more processors configured to transmit an optical signal to an environment. The one or more processors may receive, from the environment, a returned optical signal in response to transmitting the optical signal. The one or more processors may generate, based on the returned optical signal, an electrical signal. The one or more processors may determine a Doppler frequency shift in the returned optical signal based on the electrical signal. The one or more processors may adjust the electrical signal using the Doppler frequency shift. The one or more processors may divide the adjusted electrical signal into a plurality of electrical signals. The one or more processors may determine a range of the returned optical signal by performing an operation on the plurality of electrical signals in parallel.

Abstract: A LIDAR sensor system includes one or more processors. The processors transmit a signal to an environment of the LIDAR sensor system, receive, from an object in the environment, a return signal in response to transmitting the signal, determine correlation data between the signal and the return signal, identify, in the correlation data, an initial location of a peak, convolve the correlation data with a predetermined function to refine the initial location of the peak, and in response to the refined location of the peak, determine at least one of a distance to the object from the LIDAR sensor system or a velocity of the object.