منابع مشابه
An Autonomous Star Identification Algorithm Based on One-Dimensional Vector Pattern for Star Sensors
In order to enhance the robustness and accelerate the recognition speed of star identification, an autonomous star identification algorithm for star sensors is proposed based on the one-dimensional vector pattern (one_DVP). In the proposed algorithm, the space geometry information of the observed stars is used to form the one-dimensional vector pattern of the observed star. The one-dimensional ...
متن کاملStar Identification using Neural Networks
Star trackers provide spacecraft with the most precise estimate of their orientation,or attitude, with respect to a fixed celestial coordinate system. The star tracker camera views a patch of the celestial sphere and attempts to recognize the stars contained within. Then from the known star positions it will calculate the attitude. A number of pattern recognition methods, each with various stre...
متن کاملa star identification algorithm based on a voting scheme for star trackers
star identification is one of the most important stages in attitude determination with star trackers. this can be performed using matching algorithms between observed stars and a master star catalogue. the main challenge in this approach is to provide a fast and reliable identification algorithm that is sufficiently robust in different pointing views of the star tracker optical system in the sp...
متن کاملA Brightness-Referenced Star Identification Algorithm for APS Star Trackers
Star trackers are currently the most accurate spacecraft attitude sensors. As a result, they are widely used in remote sensing satellites. Since traditional charge-coupled device (CCD)-based star trackers have a limited sensitivity range and dynamic range, the matching process for a star tracker is typically not very sensitive to star brightness. For active pixel sensor (APS) star trackers, the...
متن کاملNon - Existence of Star - supported
We consider polynomial spline spaces S r d (4) of degree d and smoothness r deened on triangulations. It is known that for d 3r + 2, S r d (4) possesses a basis of star-supported splines, i.e., splines whose supports are at most the set of triangles surrounding a vertex. Here we extend the theory by showing that for all d 3r + 1, there exist triangulations for which no such bases exist. x1. Int...
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ژورنال
عنوان ژورنال: Sensors
سال: 2020
ISSN: 1424-8220
DOI: 10.3390/s20092697