Mitigation of Distance-Dependent Errors for GPS Network Positioning

• Main Authors: Musa, Tajul A, Lim, Samsung, Yan, Thomas, Rizos, Chris
• Format: Article
• Language: English
• Published: IGNSS, Australia 2006
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.utm.my/id/eprint/1183/1/IGNSS2006_0015_Paper_reviewed.pdf; http://eprints.utm.my/id/eprint/1183/; http://www.ignss.org/conf2006/

The effect of the atmosphere has been identified as the major problem of long-baseline carrier phase positioning. The effect of the ionosphere,however, can be neutralised with dual-frequency observations. Thus, the effect of the troposphere is the challenge of precise positioning and needs to be mitigated in some way. The network-based approach provides a non-dispersive correction that can be useful in reducing this effect. Applying the correction to the ionosphere-free combination improves the ambiguity resolution and hence guarantees higher accuracy. In addition, dispersive and non-dispersive corrections can be separately applied to the computation of the receiver position.