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Reliable simulating star map is the important data source for ground test and performance test of star tracker. In order to provide star maps for test conveniently, a star map simulation software was developed in this paper. The imaging position of observing stars on the CCD plane can be calculated by constructing an ideal model of star sensor. By using the Gaussian gray diffusion model to simulate...
This study is concerned with the robust extended Kalman filtering problem for non-linear attitude estimation systems with multiplicative noises and unknown external disturbances. The multiplicative noises are modelled by random variables with bounded variance. The unknown external disturbances are described to lie in bounded set. The objective of the addressed attitude estimation problem is to design...
Considering that nonlinear systems exist non-additive correlated noises, a generalized augmented Gaussian approximation filter (GAGAF) is proposed. The proposed filter makes use of the state augmented method to overcome the limitation of traditional nonlinear filters based on additive correlated noises. Based on the proposed filter framework, a novel augmented cubature Kalman filter with non-additive...
The positioning accuracy of traditional SINS/CNS integrated navigation system is low, because of the limitation of level benchmark. So strap-down inertial navigation system/stellar refraction celestial navigation system integrated navigation method (SINS/SRCNS) based on starlight refraction method is proposed. The model errors which are uncertain exist in measurement equation are estimated by Minimum...
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