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Rodriguez-Solano, C.; Hugentobler, U.; Steigenberger, P. Adjustable box-wing model for solar radiation pressure impacting GPS satellites. Adv. Space Res. 2012, 49, 1113–1128. [ Google Scholar] [ CrossRef] China Satellite Navigation Office. BeiDou Navigation Satellite System Signal in Space Interface Control Document Open Service Signal B2a (Version 1.0); China Satellite Navigation Office: Beijing, China, 2017. [ Google Scholar] CDDIS (2019) Merged multi-GNSS broadcast navigation files. ftp://cddis.eosdis.nasa.gov/gnss/data/campaign/mgex/daily/rinex3/YYYY/brdm. Accessed 27 May 2019 Dilssner F, Springer T, Schönemann E, Enderle W (2014) Estimation of satellite Antenna Phase Center corrections for BeiDou. In: Proceedings of IGS Workshop 2014, June 23–27, Pasadena, USA

Li, F.; Tu, R.; Han, J.; Zhang, S.; Liu, M.; Lu, X. Performance research of real-time kinematic/5G combined positioning model. Meas. Sci. Technol. 2022, 34, 035115. [ Google Scholar] [ CrossRef] Yuan, Y.; Li, X.; Zhu, Y.; Xiong, Y.; Huang, J.; Wu, J.; Li, X.; Zhang, K. Improving QZSS precise orbit determination by considering the solar radiation pressure of the L-band antenna. GPS Solut. 2020, 24, 50. [ Google Scholar] [ CrossRef] Alghisi, M.; Biagi, L. Positioning with GNSS and 5G: Analysis of Geometric Accuracy in Urban Scenarios. Sensors 2023, 23, 2181. [ Google Scholar] [ CrossRef] [ PubMed] In case of BeiDou GEO satellites which transmit D2 navigation signal, there is no NH code modulation on top of the data bits. But, D2 signal has a data bit rate of 500 bps, meaning that each data bit will last for 2 ms. Therefore, the bit transition in case of BeiDou D2 signal may occur after every 2 ms unlike the GPS L1 C/A signal, where the bit transition may occur only after 20 ms. In view of this much frequent sign transition occurrences, a similar strategy like D1 signal acquisition technique is implemented for BeiDou D2 signal. The implementation strategy for D2 signal acquisition is described in the following. Step 1: Zumberge, J.; Heflin, M.; Jefferson, D.; Watkins, M.; Webb, F. Precise point positioning for the efficient and robust analysis of GPS data from large networks. J. Geophys. Res. Solid Earth 1997, 102, 5005–5017. [ Google Scholar] [ CrossRef][ Green Version]Jiao, W.; Ding, Q.; Li, J.; Lu, X.; Feng, L.; Ma, J.; Chen, G. Monitoring and Assessment of GNSS Open Services. J. Navig. 2011, 64, S19–S29. [ Google Scholar] [ CrossRef] As the data-bit set length is 2 X bit, there will be altogether 2 X bit chunks of correlation matrices with all possible code delay and carrier Doppler combinations for a specific BeiDou GEO satellite. The winning index is the one which has the maximum correlation peak, and therefore, it can then be used for detecting the presence of the satellite, along with the estimation of the carrier Doppler and the code phase via a pre-detection threshold computed against a certain probability of false alarm.

Arnold D, Meindl M, Beutler G, Dach R, Schaer S, Lutz S, Prange L, Sośnica K, Mervart L, Jäggi A (2015) CODE’s new solar radiation pressure model for GNSS orbit determination. J Geod 89(8):775–791. https://doi.org/10.1007/s00190-015-0814-4Bruyninx C, Kenyeres A, Takacs B (2002) EPN data and product analysis for improved velocity estimation: first results. IAG Symp Ser 125:47–53 Xia F, Ye S, Chen D, Jiang N (2019) Observation of BDS-2 IGSO/MEOs yaw-attitude behavior during eclipse seasons. GPS Solut 23:71. https://doi.org/10.1007/s10291-019-0857-8 The chosen number of coherent integration summation should be even ( i.e., multiple of 2 due to the bit interval duration of D2 signal). Constellation Level 2, Upon the Turbulent Sea, the Thunder Arises: " Stormbreaker's arc lightning can jump to 2 additional targets." See above for more information.

IGS RINEX WG, RTCM-SC104 (2015) RINEX—the Receiver Independent EXchange format, Version 3.03. ftp://igs.org/pub/data/format/rinex303.pdf. Accessed 14 July 2015

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The "DMG Bonus on Hit Taken" Talent multiplier listed in the Skill Attributes is additive to the "Base DMG" Talent multiplier. For example, taking 2 hits while holding this skill will cause it to deal (122% + 160% × 2) = 442% ATK as DMG at Talent Level 1. The signal power μ S,N is computed from the prompt correlation between the incoming signal and the locally generated PRN code after each code integration period T coh ( i.e., 1 ms for GPS L1 or BeiDou B1). Wübbena G, Schmitz M, Boettcher G, Schumann C (2006) Absolute GNSS antenna calibration with a robot: repeatability of phase variations, calibration of GLONASS and determination of carrier-to-noise pattern. In: Proceedings of the IGS workshop 2006 perspectives and visions for 2010 and beyond, May 8–12, Darmstadt, Germany Shang, P.; Wang, X.; Zou, D.; Chu, Z.; Guo, Y. Acquisition performance of B1I abounding with 5G signals. J. Syst. Eng. Electron. 2022, 33, 563–574. [ Google Scholar] [ CrossRef] Destino, G.; Saloranta, J.; Seco-Granados, G.; Wymeersch, H. Performance analysis of hybrid 5G-GNSS localization. In Proceedings of the 2018 52nd Asilomar Conference on Signals,Systems, and Computers, Pacific Grove, CA, USA, 28–31 October 2018; pp. 8–12. [ Google Scholar]

Since Taiwan is geographically located in the footprint of Beidou satellites, the application of the PC-based software receiver can thus provide an independent assessment of the Chinese Beidou navigation satellite signals. Appleby G, Rodrguez J, Altamimi Z (2016) Assessment of the accuracy of global geodetic satellite laser ranging observations and estimated impact on ITRF scale: estimation of systematic errors in LAGEOS observations 1993–2014. J Geod 90(12):1371–1388. https://doi.org/10.1007/s00190-016-0929-2 Dilssner, F.; Springer, T.; Gienger, G.; Dow, J. The GLONASS-M satellite yaw-attitude model. Adv. Space Res. 2011, 47, 160–171. [ Google Scholar] [ CrossRef]Drewes H, Kuglitsch F, Adám J, Szabolcs R (2016) The geodesist’s handbook 2016. J Geod 90(10):907–1205. https://doi.org/10.1007/s00190-016-0948-z Wang C, Guo J, Zhao Q, Liu J (2018) Yaw attitude modeling for BeiDou I06 and BeiDou-3 satellites. GPS Solut 22:117. https://doi.org/10.1007/s10291-018-0783-1 Hugentobler U (2017) Innovation: laser ranging to GNSS satellites. In: GPS world, vol 28, no 5, 42 pp, May 2017. http://gpsworld.com/kindred-spirits-laser-ranging-to-gnss-satellites/ Jiao W, Ding Q, Li J, Lu X, Feng L, Ma J, Chen G (2011) Monitoring and assessment of GNSS open services. J Navig 64(S1):S19–S29. https://doi.org/10.1017/s0373463311000385 CSNO (2018a) Development of the BeiDou navigation satellite system (version 3.0). http://www.beidou.gov.cn/xt/gfxz/201812/P020190117356387956569.pdf. Accessed 9 Feb 2020