Fig. 1. Geographic coordinate system of the ground D-DxDyDz and geographic coordinate system of the vehicle S-SxSySz

Fig. 2. Coordinate systems of the vehicle body A-AxAyAz and coordinate systems of the camera C-CxCyCz

Fig. 3. Coordinate systems of photography R-RxRyRz

Fig. 4. The schematic diagram of whisk-broom imaging

Fig. 5. LOS OU and its four positioning angles

Fig. 6. PR rotary system in R coordinate systems

Fig. 7. The schematic diagram of maximized cutting of image plane projection after k-angle rotation

Fig. 8. The schematic diagram of calculation of overlap ratio after cropping and alignment

Fig. 9. Aircraft attitude angle change curve

Fig. 10. Stabilizing effects of LOS （a）Stabilizing effects of this method，（b）Stabilizing effects of traditional method

Fig. 11. Simulate imaging effects （a）Imaging effects of this method, （b）Imaging effects of traditional method