The invention relates to a fast triangle star atlas identification method in
astronomy navigation technology field, which includes steps: 1. using star
angular distance as a main identification characteristic, using
relative magnitude difference of two
stars as a auxiliary identification characteristic to determine star atlas identification characteristic quantity, using the star
angular distance between two
stars, the
relative magnitude difference and star number of the two
stars composing the star pair as storage basic element, hypothesizing
star sensor view field
diagonal distance to be d, storing all basic elements with
diagonal distance less than or equal to d, constructing a navigation star
database and storing the same; 2. extracting observed stars in a observation star atlas, ordering the star from light to dark according to brightness, constructing a observation triangle to be identified; 3. performing triangle identification by utilizing the method; and 4. verifying. The method realizes fast identification of star triangle in the observation star atlas, has advantages of small amount of calculation, stronger
fault tolerance capability, faster identification time and navigation
database with smaller capacity, and reduces storage pressure of redundant data to hardware
system.