Abstract: The objective of this paper is to explore feasibilities on attitude measurement of flying targets of remote and small field of view in range using weak perspective projection. Taking axis symmetric rotating object as an example, attitude measurement module of monocular vision is derived reversely by using projection image information and weak perspective projection principle. Experiment results verifies feasibilities of range attitude measurement in weak perspective projection, Under mentioned testing environments, error between weak perspective projection and perspective projection is less than 0.05°, and it mainly derives from operation range. Ultimate operating range is derived with algorithm applied. This study above lays a theoretical foundation for attitude measurement of flying targets of remote and small field of view in range.