Integrated simulation modeling of transfer alignment with airborne weapon

Navigation precision of an airborne weapon is affected directly and mostly by the precision and speed of initial alignment of inertial navigation system (INS) onboard the weapon. Transfer alignment (TA) technology proved to be an efficient way to solve such problems. The key and foundation of TA is the modeling of various error sources which makes difference in motion between weapon and aircraft, including physical misalignment angle, lever-arm effect, flexure, time delay, sensors, etc. Constructing integrated uniform model is elementary to achieve greater efficiency of research in simulation and experiment of TA because of the serious coupling of different error sources. Based on deeply analysis of the functional mechanism and interaction of error sources, a TA integrated simulation model which is as possible as close to the real flight condition is proposed in this paper. To validate the constructed model, a traditional velocity plus attitude matching method will be used.