Method of correcting thermal deformation errors of geostationary orbit optical camera
A technology of geostationary orbit and deformation error, which is applied in the field of space satellite positioning to achieve the effect of improving on-orbit positioning accuracy, correcting positioning error, and shortening avoidance time
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[0029] Taking the short-wave infrared data of a certain model of stationary orbital staring camera as an example, the thermal deformation positioning error data for 7 consecutive days is selected, and the specific implementation of the present invention is further described in detail with reference to the accompanying drawings:
[0030] In the present invention, the positioning error change law of thermal deformation is fitted with high precision, and the positioning error of the following day is corrected by a correction model composed of a fitting model for n consecutive days. Here, n=3 is selected, and the Fourier series model is selected as the third order, and the method is described. It mainly includes the following steps:
[0031] (1) Obtain the observation value of the thermal deformation positioning error of a certain model of stationary orbit optical camera in a continuous period through the geometric positioning model; figure 2 Shown is the variation of thermal deformat...
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