A Polar Coordinate System Based Grid Algorithm for Star Identification

• DOI: 10.4236/jsea.2010.31004
• Publication Date: 2010-04-29T02:38:47Z
• Authors: Hua ZHANG; Hongshi SANG; Xubang SHEN
• Keywords: Polar coordinate system; Geographic coordinate conversion; Rectangle; Identification; Star (game theory); Ellipsoidal coordinates; A* search algorithm

In Cartesian coordinate systems, the angular separation-based star identification algorithms involve much trigon- ometric function computing. That delays algorithm process. As in a polar system, coordinates are denoted by values, it is potential to speed up process adopting sys-tem. An system introduced and grid based on proposed enhance performances of The simulations demonstrate that superior rectangle com-puting cost rate. It can be used sensors for high precision reliability spacecraft navigation.