Research on application of Terahertz technology to near-space hypersonic spacecraft Tracking Telemetry and Command

Abstract:

Tracking Telemetry and Command(TT&C) for near space hypersonic spacecraft needs to solve blackout，over-the-horizon and multi-target problems. According to the characteristics that Terahertz waves can penetrate the plasma and are attenuated intensively in the atmosphere，the Terahertz TT&C system based on airborne platform including aeroplane and airship is researched. The Terahertz system can accomplish integrated function of velocity measurement，ranging，telemetry and telecommand by using spread spectrum technology；and tracking telemetry and command for multi-target can be realized as well. The ballistic measurement of hypersonic spacecraft can be implemented by using nR (n≥3) method. The analysis results indicate that the technology solutions for air-borne Terahertz spread spectrum TT&C system are reasonable，while there are significant differences for engineering application.