Evaluation of Signal-in-Space Continuity and Availability for BeiDou Satellite Considering Failures

Abstract

Signal-in-space (SIS) continuity and availability are important indicators of performance assessment for Global Navigation Satellite Systems (GNSSs). The BeiDou Navigation Satellite System (BDS) Open Service Performance Standard (BDS-OS-PS-1.0) has been released, and the corresponding public performance indicators have been provided, but the actual SIS performance is uncertain to users. SIS continuity and availability are primarily related to unscheduled outages (failures). Therefore, based on the existing failure classification system and actual operation modes, four types of failure modes are first analysed: long-term failure related to satellite service period, maintenance failure related to satellite manoeuvring, short-term failure associated with random repairable anomalies and equivalent failure corresponding to a combination of the above three types of failures. Second, based on the failure classification and selected precise and broadcast ephemerides from 2015–2016, the Mean Time Between Failure (MTBF) and Mean Time To Repair (MTTR) of each failure type are obtained using appropriate detection methods. Finally, using a corresponding assessment model, the SIS continuity and availability of BeiDou are calculated for individual and equivalent failure cases, and these are compared with the provided index in the BDS Open Service Performance Standard.

A lifecycle cost model considering both component and system burn-in for operationally unrepairable systems

“…Realistically, the failure of a system results in the unavailability of the system. Some models of constellation unavailability have been proposed recently (Wang et al , 2017; Fan et al , 2020; Teo et al , in press) and additional unavailability costs also have to be considered as a part of lifecycle costs. This has as yet not been studied by the current burn-in literature.…”

Research on BeiDou Satellite Positioning Algorithm Based on GPRS Technology

“…e ground measurement and control network includes the main control station, orbit measurement station, barometric altitude measurement station, and calibration station. e main control station is responsible for controlling the work of the entire system [10]. e orbiting station is used as a reference coordinate for positioning at a known location and can measure the propagation distance between the satellite and the orbiting station.…”

Analyzing Aging Impact on SatelliteCommunication Availability

“…Zeng et al [40] verify models and analyze reliability using a probabilistic approach. Lihong Fan [7] assesses signal continuity and availability for BeiDou constellations using CTMC. NASA's report [24] discusses methods focusing on critical Space Vehicle (SV) systems and the advantages of using models for software failures in space missions.…”