Coarse alignment method for fiber optic gyro strapdown inertial navigation system based on single axis rotation
A strapdown inertial navigation and fiber optic gyroscope technology, applied in the field of measurement, can solve the problems of poor alignment effect and poor alignment performance
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[0075] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings:
[0076] (1) Determine the initial position parameters of the carrier through GPS and bind them to the navigation computer;
[0077] (2) The strapdown inertial navigation system prepares for warm-up, collects the data output by the fiber optic gyroscope and the quartz accelerometer and processes the data;
[0078] (3) According to the mutual positional relationship of the coordinate system (as attached image 3 ) Determine the conversion matrix T between the navigation coordinate system and the inertial coordinate system i n .
[0079] Where T e n It is the transformation matrix between the navigation coordinate system n and the earth coordinate system e, which can be determined by the longitude and latitude (L, λ) of the point where the carrier is located.
[0080] T e n = 1 0 0 0 sin L cos L 0 - co...
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