Orientation determination technology based on satellite navigation system Non-coaxial rotation compound modulation technology for strapdown inertial navigation system Ionospheric measurement and application technology based on satellite beacon signals Logistics information technology & information system 并列题名:Orbit determination technology of earth observation satellites and its application Spacecraft autonomous navigation technology based on multi-source information fusion Design theory and key technology of multiband satellite navigation signal Research on I/O optimization technology based on solid state disk 并列题名:Ionospheric measurement and application technology based on satellite beacon signals Orbit determination technology of earth observation satellites and its application