earticle

영어

Sea-skimming missiles fly at very low altitude (5m-10m) above the mean sea level. An altimeter based height control system is used to keep the missile at the desired height by measuring the instantaneous height of the missile above the sea level. The altimeter measurement comes with the disturbances which forces the missile to follow the sea waves resulting is a complex trajectory and high energy requirements. An extended state observer based height control system with a proportional derivative controller is used for the real time estimation and rejection of sea wave disturbances to achieve a stable flight path for the missile. Simulations are carried out in both continuous and digital domain to understand the hardware implementation imperatives of the same.