Multi-sensor-based attitude determination system
A sensor and attitude determination technology, applied in the field of attitude determination systems, can solve the problems of low integration, reduced attitude accuracy, low integration, etc., to improve attitude accuracy, reduce volume and power consumption, and improve integration. degree of effect
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[0019] like figure 1 As shown, the present invention is composed of a sensitive subsystem 1, a signal acquisition and preprocessing subsystem 2, and a comprehensive processing subsystem 3. Sensitive subsystem 1 mainly includes CMOS star-sensitive probe 11, sun-sensitive probe 12, fiber optic gyroscope 13 and three-axis magnetic field probe 14, wherein CMOS star-sensitive probe 11 and sun-sensitive probe 12 are sensitive to starlight information and sunlight information. It is converted into a corresponding electrical signal and followed and amplified. In order to avoid the interference of sunlight on the star sensor and facilitate the calculation of the orbital coordinate system, the installation angle of the sensitive optical axis of the CMOS star-sensitive probe 11 and the sun-sensitive probe 12 is set to 90 degrees, assuming that the initial body coordinate system coincides with the orbital coordinate system , when installed, the direction of the star-sensitive optical axi...
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