Abstract:

In the absence of other navigation systems, a cruise missile inertial navigation system (INS) localization error will cumulate continuously with time. On the basis of ignoring INS velocity estimation error, a novel INS fast localization error modification method for cruise missiles based on continuous observation to a single feature target is proposed in view of engineering application. Without changing the cruise path of the missile, combining the iteration algorithm and the mean denoising approach, this method can realize cruise missile INS localization error realtime modification only in 1 s. Simulation results show that this method can reduce the INS localization error to within 14 m under the condition that the INS velocity estimation error is not greater than 6.5 m/s although it is a biased estimation method.