Error Analysis of Explosion-Height Controlling Method Based on Geomagnetism Information
A new explosion-height controlling scheme of the ballistic missile based on geomagnetism information was put forward aiming at the deficiency of the traditional explosion- height controlling method. The simplified geomagnetism model was presented in this study for the error analysis and precision calculating. Although the scheme was not feasible yet, it could provide the beneficial reference for the explosion-height controlling system design of the ballistic missile. The explosive performance and explosion-height are main factors to influence the damage effect of the ballistic missile in reentry phase. For different targets, the optimal explosion- height must be presented with the best damage effect. The traditional methods of explosion-height controlling are based on the measuring using instantaneous fuze altimeter and radio altimeter respectively. However, the measurement precision of the instantaneous fuze is limited because of the differences between the actual and standard trajectory models. Moreover, the radio altimeter is easy to be disturbed by countermeasure material commonly. A new explosion-height controlling scheme of the ballistic missile based on the measuring using three tri-axial magnetometers is put forward. The feasibility and precision of the scheme are calculated and analyzed especially in this study.