Abstract: The disclosed are a signal processing method, a signal processing device, a radar, a medium, a program product and a terminal. The method is applied to the radar, the radar includes M transmit channels, and the method includes: transmitting, during a first transmit cycle, a first detection signal through the M transmit channels; transmitting, during a second transmit cycle, a second detection signal through ml transmit channels in the M transmit channels, where m1<M, M is an integer greater than 0; and processing a first echo signal and a second echo signal to determine a correspondence between the first echo signal and the M transmit channels; where the first echo signal and the second echo signal are signals generated after the first detection signal and the second detection signal being reflected by a target, respectively. It is advantageous to better meet the radar measurement needs.