PMID- 27595795 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180515 LR - 20181113 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Sep 6 TI - A new analytical solar radiation pressure model for current BeiDou satellites: IGGBSPM. PG - 32967 LID - 10.1038/srep32967 [doi] LID - 32967 AB - An analytical solar radiation pressure (SRP) model, IGGBSPM (an abbreviation for Institute of Geodesy and Geophysics BeiDou Solar Pressure Model), has been developed for three BeiDou satellite types, namely, geostationary orbit (GEO), inclined geosynchronous orbit (IGSO) and medium earth orbit (MEO), based on a ray-tracing method. The performance of IGGBSPM was assessed based on numerical integration, SLR residuals and analyses of empirical SRP parameters (except overlap computations). The numerical results show that the integrated orbit resulting from IGGBSPM differs from the precise ephemerides by approximately 5 m and 2 m for GEO and non-GEO satellites, respectively. Moreover, when IGGBSPM is used as an a priori model to enhance the ECOM (5-parameter) model with stochastic pulses, named ECOM + APR, for precise orbit determination, the SLR RMS residual improves by approximately 20-25 percent over the ECOM-only solution during the yaw-steering period and by approximately 40 percent during the yaw-fixed period. For the BeiDou GEO01 satellite, improvements of 18 and 32 percent can be achieved during the out-of-eclipse season and during the eclipse season, respectively. An investigation of the estimated ECOM D0 parameters indicated that the beta-angle dependence that is evident in the ECOM-only solution is no longer present in the ECOM + APR solution. FAU - Tan, Bingfeng AU - Tan B AD - State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Wuhan 430077, China. FAU - Yuan, Yunbin AU - Yuan Y AD - State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Wuhan 430077, China. FAU - Zhang, Baocheng AU - Zhang B AD - State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Wuhan 430077, China. FAU - Hsu, Hou Ze AU - Hsu HZ AD - State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Wuhan 430077, China. FAU - Ou, Jikun AU - Ou J AD - State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Wuhan 430077, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160906 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 PMC - PMC5011712 EDAT- 2016/09/07 06:00 MHDA- 2016/09/07 06:01 PMCR- 2016/09/06 CRDT- 2016/09/07 06:00 PHST- 2016/05/09 00:00 [received] PHST- 2016/08/18 00:00 [accepted] PHST- 2016/09/07 06:00 [entrez] PHST- 2016/09/07 06:00 [pubmed] PHST- 2016/09/07 06:01 [medline] PHST- 2016/09/06 00:00 [pmc-release] AID - srep32967 [pii] AID - 10.1038/srep32967 [doi] PST - epublish SO - Sci Rep. 2016 Sep 6;6:32967. doi: 10.1038/srep32967.