Volume 40 Issue 4
Jul.  2020
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WANG Mengli, XU Junyi, XIANG Caibing, YAO Lihao. Fault and Detection Performance Definition of Beidou Satellite Space Signal[J]. Journal of Space Science, 2020, 40(4): 572-577. doi: 10.11728/cjss2020.04.572
Citation: WANG Mengli, XU Junyi, XIANG Caibing, YAO Lihao. Fault and Detection Performance Definition of Beidou Satellite Space Signal[J]. Journal of Space Science, 2020, 40(4): 572-577. doi: 10.11728/cjss2020.04.572

Fault and Detection Performance Definition of Beidou Satellite Space Signal

doi: 10.11728/cjss2020.04.572
  • Received Date: 2019-04-26
  • Rev Recd Date: 2019-12-23
  • Publish Date: 2020-07-15
  • Performance index assignment and demonstration is an important accordance for satellite navigation system, and it is necessary to direct and restrict each system scheme design and project implementation. Integrity and continuity are key service performance indexes, and whether they are satisfied with user requirement depends on the design of SIS (Signal in Space) fault and monitoring performance. In the system index design, the fault rate of satellite signal and the integrity monitoring index of satellite signal are complementary and constrained with each other. It is necessary to realize the comprehensive design according to the index of each link of the system. Taking user integrity and continuity performances as designing accordances, the conversion and distribution relationships among SIS fault times, mean fault probability, fault misdetecting probability, fault alarming probability and hazardous probability are defined. Then calculation and analyzation are implemented aiming at Beidou system and its constellation characters. In the calculation, requirements of user integrity and continuity adopt the ICAO standard, and the level of satellite signal failure refers to the actual operation level of Beidou regional system. Beidou system monitoring performance index under different SIS fault level is analyzed. The research conclusions provide demonstration and design foundation of the reliability index for Beidou global system.

     

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