Compare of navigation constellations´ GDOP with different construction

Author

Zhang, Weixing ; Li, Zhenghang ; Liu, Wanke

Author_Institution

Geodesy & Geomatics Sch., Wuhan Univ., Wuhan, China

fYear

2011

fDate

26-28 July 2011

Firstpage

3464

Lastpage

3467

Abstract

Based on the characteristics of the 2^nd BeiDou and GPS, three kinds of constellations constituted by MEO, GEO+IGSO+MEO and GEO+IGSO+LEO+MEO were simulated in this paper. Space geometry intensity of these constellations was compared during autonomous orbit determination and ground positioning. The results show that GDOP of MEO satellite has been improved in autonomous orbit determination after adding GEO, IGSO or LEO satellite where the total number of satellites remains the same. However, the geometry intensity of GEO and IGSO is relatively poor in the mean time. During the ground positioning, because GEO and IGSO are over China and surrounding, the positioning accuracy is improved in these areas and geometry intensity is weakened in other areas.

Keywords

Global Positioning System; artificial satellites; position control; BeiDou; China; GEO satellite; GEO+IGSO+LEO+MEO; GPS; IGSO satellite; LEO satellite; MEO satellite; autonomous orbit determination; ground positioning; navigation constellations GDOP; positioning accuracy; space geometry intensity; Geometry; Global Positioning System; Low earth orbit satellites; Orbits; GDOP; autonomous orbit determination; navigation system; the 2^nd BeiDou;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Technology (ICMT), 2011 International Conference on

Conference_Location

Hangzhou

Print_ISBN

978-1-61284-771-9

Type

conf

DOI

10.1109/ICMT.2011.6002698

Filename

6002698