2009•Gnss World of ChinaRequires access

Effect and Analyse of Broadcast Ephemeris Errors on GPS Survey Precision

Feijuan Yao

Abstract

The effect of broadcast ephemeris errors on precision of GPS point positioning is analyzed,and the effective level of broadcast ephemeris errors on GPS point positioning is verified by means of differential technical processing on airborne GPS data by using precise ephemeris.The effective level and law of broadcast ephemeris errors on single-reference station DGPS surveying data is introduced.At the same time,the effective level and law of broadcast ephemeris errors by means of differential technical processing on airborne GPS data using precise ephemeris are also validated.

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Key concepts: Ephemeris, Global Positioning System, Differential GPS, Geodesy, Precise Point Positioning, Remote sensing, Differential (mechanical device), Computer science