Analysis of image motion compensation accuracy for aerial push-broom sensor

In order to analyze the effects of the speed,attitude and posture change of aircraft on the image quality of push-broom imaging sensor,an image motion model is established to calculate the accuracy of image motion compensation by combining light vector with optical axis revolution. The characteristics of image motion caused by translation and rotation are analyzed,and the image motion model of push-broom imaging sensors is established by decomposing the movement.With two groups of parameters,the influence of aircraft motion on image motion is analyzed and the method of image motion compensation is given. The accuracy of image motion compensation is calculated based on error budget of variable with Mont Carlo method.While the high-speed(v/H) ratio is 0.3 ~ 0.5(1 / s) and the TDI stage is no more than 32,the 3σ value of image motion compensation(IMC) error is 16 μm,which can satisfy the requirement of remote sensor.