The invention discloses an on-site test method for a
radar speed
detector. The method includes the steps of enabling a small vehicle provided with a
microwave antenna matched with the
radar speed
detector to pass through the
radiation area of the
radar speed
detector in the running direction of the vehicle on a road provided with the radar speed detector, finding the point with the maximum power and the points with the power 3 dB lower than the maximum power, measuring a physical included
angle alpha between the radar speed detector and the running vehicle, an
angle alpha 1, generated when the vehicle enters one of the points with the power 3 dB lower than the maximum power, between the radar speed detector and the running vehicle, an
angle alpha 2, generated when the vehicle leaves the other point with the power 3 dB lower than the maximum power, between the radar speed detector and the running vehicle, and the distance L between the position where the vehicle enters the one of the points with the power 3 dB lower than the maximum power and the position where the vehicle leaves the point with the power 3 dB lower than the maximum power, measuring the
microwave transmitting frequency of the radar speed detector to obtain the error of the
microwave transmitting frequency of the radar speed detector, imputing alpha 1, alpha 2, L and a speed to be detected into a moving target speed
simulation device, and detecting the speed error of the radar speed detector through the moving target speed
simulation device. The on-site test method is high in safety performance, high in accuracy and high in stability, and enables data to reappear,
work pressure of technical staff is reduced, and work intensity of the technical staff is lowered.