Enough stars for navigation can be detected at infrared wavelengths. Limited by the objective conditions, large quantity of star images can not be obtained in the daytime. To accelerate the development and performance testing of the algorithms for three field-of-view star detection, star point location and star pattern recognition, a method for simulating all-time three field-of-view star images should be studied. The models of three field-of-view sky radiation, system noise and star imaging are established. The software for generating three field-of-view star maps is designed and operated. The result obtained is of importance to the acceleration of development and full performance testing of related algorithms.