Design of measurement and control scheme for aerial recovery of launch vehicle sub-stage

The aerial recovery sub-stage uses the launch vehicle reuse is one of the rocket recovery methods, compared with the traditional one-time launch vehicle measurement and control, the aerial recovery sub-stage rocket has the characteristics of re-entry into the atmosphere, reuse, communication and positioning with other air vehicles such as helicopters, etc. , the system adopts S-band spread spectrum measurement and control system based on ground/space, and presents the scheme, composition and process of aerial recovery measurement and control.