Geomagnetic Field To Determine The Roll Attitude Of The Trajectory Correction

Trajectory correction projectile is a kind of precise guided ammunition coming forth in 1980's.The development of this ammunition promoted the strike probability of common shell and rocket projectile greatly. Nowadays it has been the most important filed of ammunition research.The detecting means for rolling attitude affects the precision of trajectory correction projectile directly. The main assignment of this paper is to develop one detecting module for rolling attitude.One real-time detecting means for rolling attitude is put forward, using geomagnetism detection and trajectory flight dynamics based on one HE projectile. Corresponding mathematical model is given and solved in DSP. The principle prototype is developed.This detecting means is approved from the experiments output. Precision of the principle prototype is achieved to 1 degree, which can afford real-time azimuth of trajectory correction projectile.