How to detect the pulse maneuver and compute Maneuvering value of space object quickly and accurately is the demand of space object detection. Orbital maneuvering of space object is determined by detecting the phase difference between the observation of space object and the theoretical value o-c, and the linear relationship between phase difference and orbital maneuvering value is used to solve the orbital maneuvering time and maneuvering value. After simulation, the object orbit change can be found and determined within 30–60 min, and the orbit change amount is calculated within 2 cycles. The calculated orbit change amount error is less than 10%, and the orbit change time error is less than 30 min, which can meet the task requirements.