Improvement of Quality of Missile Guidance Through Compensation for Errors of Nose Cone

The Nose cone is an integral part of the missile, with the role of protecting the self-guided head from the effects of the environment during the flight. However, the Nose cone also causes the error component of the angle due to the electromagnetic refraction effect when passing through the Nose cone, causing the missile guidance error. This article will analyze the relationship among the angular components during the proximity to the target of the missile, thereby using filters along with the dither signal to determine the angular error component caused by the Nose cone to eliminate the effect of the said error component This article proposes a simple compensation and rejection scheme based on the dither signal. With the proposed compensation scheme, the calculated volume is significantly reduced when compared to the method of compensation by the Kalman filter. The Nose cone error compensation ability of the compensation scheme proposed in this article will be verified through simulations on the MATLAB software. The results of the article will show that the Nose cone coefficient can be quickly estimated using a dither signal, bandpass filter and notch filter, so that we could get information about the Nose cone coefficient. With the practicality of the article results, it can be applied to radio self-guided head of the self-guided missile system to improve the quality of proximity to the target, reduce slippage at the time of meeting. © Published under licence by IOP Publishing Ltd.