基于巴谷星表星挑选出等小于2的恒星，利用matlab实现可生成任意方向的导航星星图以作为天文导航识别定位定姿依据的程序。(Pick out the star catalog prakob etc. less than 2 stars for navigation based on star map can be generated in any direction as celestial navigation positioning and orientation according to the recognition procedure using matlab.)