Abstract: In order to meet the detection requirement of aerial targets in the complex background based on space-based platform, the motion characteristics of aerial targets in different detection angles and space positions was studied, and the motion model of space-based detection scene was established. This study used the motion characteristics of aircraft in the actual situation, and analyzed the characteristics of the angle of pitching, departure and the rotation of the target, and the modeling simulation of target radiation characteristics was realized. On this basis, an integrated all-attitude motion characterization and parameter analysis system was designed based on space-based platform using MATLAB GUI software platform. Results show that in the medium wave, the radiation intensity in direction angle from 270 to 90 above 90 to 270, when the pitching angle is 90, the strongest radiation at the angle of departure of 0, rotation angle has no effect on radiation intensity. In the long wave, the radiation intensity is the strongest at the angle of pitching 0 and 30, the angle of departure 90, and the angle of rotation 90. The system can evaluate the performance of detection by signal interference ratio, moreover, it can further determine the system indices such as the detection resolution and spectrum. The study provides the technical support for space-based aerial target detection.