rootbrowseIAC-12B2session 66. Space-Based Navigation Systems and ServicesPapers1. Atomic Clocks continuous development in Selex Galileo for Navigation Satellite Systems.2. Enhanced Coefficient Based Ionosphere algorithm for Indian Regional Navigation Satellite System (IRNSS)3. ETRUSCO-2 @ SCF_LAB: an ASI-INFN Project of Development and Thermal-optical-vacuum Test of GNSS Laser Retroreflector Arrays4. Further approach to the GNSS localization accuracy estimation with respect to the navigated object Earth position and the season period advisement5. Improved orbit determination accuracy of IRNSS satellite using combined filter smoother method6. GNSS Reliability Testing in Signal-Degraded Scenario7. Efficient Production Engineering for the Manufacture of Galileo Payloads8. In-orbit autonomous navigation system based on attitude sensors9. Using pulsating sources for defining a relativistic space-based navigation system10. Match filtering approach for signal acquisition in radio-pulsar navigation11. Indoor messaging system12. Autonomous navigation for HEO satellites based on SINS/GNSS tight integration method13. System design and manufacture of China compass satellite14. Linear matrix inequalities based adaptive filter for autonomous navigation using Inter-Satellite-Link measurements