Inertial navigation system horizontal prime plane curvature radius measuring method
A technology of inertial navigation system and radius of curvature, which is applied in the direction of measuring devices, navigation through speed/acceleration measurement, instruments, etc., can solve problems such as lack, achieve the effects of reducing measurement errors, improving navigation accuracy, and simple and convenient measurement methods
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[0020] The present invention will be further described below in conjunction with the drawings:
[0021] In order to solve the problem that the inertial navigation system needs to use real-time measurement of the radius of curvature of the transverse surface when the ship enters the polar region when it is working in the polar mode, the present invention proposes an inertial navigation system to measure the radius of curvature of the transverse surface. method. This method uses the ellipsoid model to describe the earth, and uses the current output of the inertial navigation system to measure the radius of curvature of the transverse plane. The measurement method can meet the needs of high-precision inertial navigation system for polar navigation.
[0022] The specific steps of this method are as follows:
[0023] 1. The ship sails to the polar region, and the inertial navigation system enters the polar region mode;
[0024] 2. Collect the position data output by the polar mode of the ...
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