Abstract: Angular glint is main error source of the modern air defense guided weapon. The field measurement of dynamic glint of stealth aircraft takes long time and has the problem of low accuracy. Thus, a real-time approach based on FEKO to simulate the characteristics of dynamic glint of radar targets is proposed. Firstly, the azimuth and pitch angle of the target model during flying, which changes over time, are obtained by the coordinate transformation of radar coordinate system and target coordinate system. Then, the method and steps of calculating dynamic glint of the target are introduced through FEKO simulation. Finally, one kind of stealth aircraft target is taken as example. The real-time characteristics of dynamic glint of radar target in snake maneuver are achieved by simulation. The conclusion can be obtained through simulation that the approach can be used to get the information of real-time electric field of the target, furthermore, the angular glint can be calculated. The study provides the analysis for theory and the basis for experiments, which help improve the anti-deception of air-defense weapon and reduce the miss distance.