Double-sensor distance measurement target positioning and tracking method

The invention relates to a dual-sensor distance measurement target positioning and tracking method, which comprises the following steps of: establishing a target tracking model in a distance-Doppler space, extracting distance-Doppler states from respective measurements in the distance-Doppler space by two sensors which are separately arranged by using an unscented Kalman filter to obtain distance estimation and Doppler estimation; and performing cross positioning on the two groups of distance estimation and Doppler estimation obtained by the two sensors, and solving the motion state of the target. Compared with a traditional single sensor, the non-linear degree of the tracking model is relatively low, a part of non-linear effect is moved out of a filter through the fusion part of cross positioning, error feedback accumulative increase can be effectively avoided, and therefore the positioning and tracking performance is improved. According to the invention, angle information measured by a sensor is ignored, a