High-speed And High-spin Pseudo-satellite-guided Bombs Control Technology

The short range air defense now is mainly dependent on antiaircraft gun weapon systems which utilize concentration fire shooting methods to compensate for the low hitting accuracy of the unguided projectiles, so a large amounts ammunitions are supposed to be expended thus cause heavy burden to economy. So it is meaningful in theory and application to improve conventional ammunition technology by using modern guidance approaches. A guidance method of the high-speed and high-rolling projectile which is stable with its own high speed spinning, hereinafter referred to as high-rolling projectile, is proposed with developed pseudo satellite technology in this thesis. The details is given in following:Firstly, the pseudo satellite technology applied to detect and locate high-rolling projectile is studied. Based on the previous research, an independent networking model of inverse pseudo satellites is proposed through studying the model that enhancing double-star with pseudo satellite. In other words, one pseudo satellite base station is set up in combat fieldsite to receive the signal from transmitter on borad to locate the projectile, the simulation results show this model has higher positioning accuracy.Then, the control mechanism of high-rolling projectile by changing centroid and combusting base bleed propellant is studied. Based on the previous research about the model, the model added a slide block mechanism and base bleed separately is deduced according to Newton's law and the theorem of momentum moment, the simulation results show bias flow vary from centroid to centroid, the delay and length of burst time has impact on range.Finally, trajectory correction technology is studied. The impact point can be We forecasted through the state information provided by positioning system, then the control signal is deduced according to the deviation value of impact point and target point. It is shown with the simulation results that the two-dimensional trajectory correction is realized and hitting accuracy is improved.