Image shift compensation calculation method based on elliptical orbit
An elliptical orbit and calculation method technology, applied in the field of aerospace, can solve the problem that the image motion compensation model cannot compensate for the image motion of the elliptical orbit, and achieve the effect of ensuring the accuracy of image motion compensation
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[0016] Specific implementation mode 1. Combination Figure 1 to Figure 4 To describe this embodiment,
[0017] Step 1. Based on the calculation model of the image motion velocity vector of the near-circular orbit, the image motion velocity vector model of the elliptical orbit is established, such as figure 1 Shown; O is the center of the planet, O b is the orbital center, F 1 and F 2 are the two foci of the ellipse, and B is the position of the spacecraft at a certain moment. During the imaging process, the spacecraft was kept pointing towards the center of the planet. V is the orbital velocity of the spacecraft at this moment, tangent to the orbit, and the optical axis of the camera is along BF 1 The direction points to the center of the planet, and BG is the integral direction of the TDI CCD on the focal plane;
[0018] Step 2. Calculation of elliptical orbital velocity. According to the vitality formula of ellipsoidal motion, the elliptical orbital velocity can be obt...
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