An application of GPS dual frequency codeless receiver for ionospheric delay to single frequency VLBI observation

Author

Imae, M. ; Kondo, T. ; Amagai, J. ; Kaneko, A. ; Miki, C.

Author_Institution

Kashima Space Res. Center, Ibaraki, Japan

fYear

1990

fDate

11-14 June 1990

Firstpage

13

Lastpage

14

Abstract

A dual-frequency codeless Global Positioning System (GPS) receiver for measuring ionospheric delay, called GTR-2, has been developed. Results of a feasibility study of using GTR-2 for single-frequency very-long-baseline interferometry (VLBI) experiments are presented. GTR-2 uses a cross-correlation property of the P-code signals transmitted from GPS satellites to measure ionospheric total electron content (TEC) with a measurement uncertainty of about 2*10/sup 16/ electrons/m/sup 2/ along the line of site to the satellite. Ionospheric compensation of the signal from radio stars is studied using the TEC data obtained from GTR-2.<>

Keywords

ionospheric electromagnetic wave propagation; ionospheric techniques; measurement standards; radioastronomical techniques; radionavigation; radiowave interferometry; satellite relay systems; time measurement; GPS dual frequency codeless receiver; GPS satellites; GTR-2; Global Positioning System; P-code signals; VLBI; cross-correlation; ionospheric compensation; ionospheric delay; ionospheric total electron content; measurement uncertainty; observation technique; radio stars; radioastronomy; single-frequency very-long-baseline interferometry; Delay estimation; Electrons; Frequency estimation; Frequency measurement; Global Positioning System; Ionosphere; Mobile antennas; RF signals; Satellite broadcasting; Space stations;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on

Conference_Location

Ottawa, Ontario, Canada

Type

conf

DOI

10.1109/CPEM.1990.109902

Filename

109902