Document Type : Original Article

Authors

1 Faculty Member, Satellite Research Institute, Iranian Space Research Center

2 Research Engineer, Satellite Research Institute, Iranian Space Research Center

3 Iranian Space Research Center

Abstract

In This paper, a domestic regional and independent satellite navigation system, known as "IRANSS" has been designed and analyzed to cover user needs in the Middle East Region. The Space Segment of this constellation is composed of nine satellites in four orbits, in such a way three satellites have been considered in one GEO orbit [1] and two satellites are considered in each of three IGSO orbits [2]. Two main Tracking and Control Ground Stations and twenty wide area reference stations, assigned only for augmentation, form the Ground Segment. The focus of this research is on space segment and specially design a navigation constellation and satellites’ system design, and evaluation of the performance of the navigation system in combination with other satellite-based navigation systems, since Augmentation Systems prepare correction signals for a specific Navigation System by ground segment. STK is the main software used to design and analyze the performance of the system by DOP as a reference for Ranging Errors based on Constellation Geometry. All of design parameters are computed in a way to minimize GDOP with four satellites. The parameters of navigation accuracy have been compared with other active GNSS [3] constellations to evaluate error in the designed system. Analysis results express that the geometric accuracy of the designed system is solely 16 meters in 95% of a day in all points of the desired area and would be improved to 14 and 12.5 meters in the case of combination with BeiDou and GPS, respectively

Keywords

Main Subjects

##European Global Navigation Satellite Systems Agency, “GSA GNSS Market Report”, 1, Issue 6, 2019.##
##European Global Navigation Satellite Systems Agency, “GSA GNSS Market Report”, 1, Issue 2, 2018.##
##A. Delépaut, P. Giordano, J. Ventura-Traveset, D. Blonski, M. Schönfeldt, P. Schoonejans, S. Aziz, R. Walker, “Use of GNSS for lunar missions and plans for lunar in-orbit development”, Advances in Space Research, Vol.66, Issue 12,##
##Bu, X. Zuo, X. Li, J. Chang, Xionghao Zhang, “Evaluation and analysis on positioning performance of BDS/QZSS satellite navigation systems in Asian-Pacific region”, Advances in Space Research, Vol.63, Issue 7,2019.##
##Giorgi, T.D. Schmidt, C. Trainotti, R. Mata-Calvo, C. Fuchs, M.M. Hoque, J. Berdermann, J. Furthner, C. Günther, T. Schuldt, J. Sanjuan, M. Gohlke, M. Oswald, C. Braxmaier, K. Balidakis, G. Dick, F. Flechtner, M. Ge, S. Glaser, R. König, G. Michalak, M. Murböck, M. Semmling, and H. Schuh, “Advanced technologies for satellite navigation and geodesy,” Advances in Space Research, vol.64, Issue 6, 2019.##
##Novatel, What are Global Navigation Satellite Systems?,HEXAGON, https://novatel.com/tech-talk/an-introduction-to-gnss/what-are-global-navigation-satellite-systems-gnss, 2019.##
##Delépaut, P. Giordano, J. Ventura-Traveset, D. Blonski, M. Schönfeldt, P. Schoonejans, S. Aziz, R. Walker, “Use of GNSS for lunar missions and plans for lunar in-orbit development”, Advances in Space Research, vol.66, Issue 12, 2020.##
##Choy, J. Kuckartz, A.G. Dempster, et al., “GNSS satellite-based augmentation systems for Australia” GPS Solutions 21, 835–848, 2017.##
##gov, Augmentation Systems GPS.gov ,https://www.gps.gov/systems/augmentations/, 2021##
##Camacho, Sergio. (2016). “Current and Future GNSS and Their Augmentation Systems”, 1-39. 10.1007/978-1-4614-6423-5_25-3.##
##Lawal, & C. Chatwin, (2019). “A Review of GNSS and Augmentation Systems”. Journal of Electrical and Electronics Engineering. 5. 1-21.##
##Chen, Y. Zhang, J. Wang, , S. Yang, D. Dong, Ji. Wang, W. Qu, & B. Wu. “A simplified and unified model of multi-GNSS precise point positioning”, Advances in Space Research, vol.55, 125-134, 2015.##
##Zhang, & R. Tu, & R. Zhang, & Y. Gao, & H. Cai,. (2018). “Combining GPS, BeiDou, and Galileo Satellite Systems for Time and Frequency Transfer Based on Carrier Phase Observations”. Remote Sensing, Vol.10, 324. 10.3390/rs10020324.##
##S. El-Sagir, , “Mathematical modelling and design of optimal satellite constellations with multi-fold continuous coverage for position location and navigation”, http://hdl.handle.net/11375/7619##
##Zardashti, & Sh. Emami. (2021). “Spatial Geometry Design of a Low Earth Orbit Constellation for Iranian Regional Navigation Satellite System”, Journal of Aerospace Technology and Management. 13. 10.1590/jatm.v13.1215.
##م. نوابی، ر. الهی‌نیا، س. ی. کریمی مسلم، 1388، شبیه‌سازی دینامیکی منظومه ماهواره‌ای ارتفاع پایین به منظور پوشش‌دهی منطقه‌ای، اولین کنفرانس تخصصی شبیه‌سازی پرواز، تهران،   https://civilica.com/doc/78910  ##