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Enhancement of local area DGPS accuracy: a composite approach

Che Awang, S and Subari, M D (2005) Enhancement of local area DGPS accuracy: a composite approach. In: International Symposium & Exhibition on Geoinformation 2005 Geospatial Solutions for Managing the Borderless World,, 27 – 29.9.05., Pulau Pinang.

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In a conventional Local Area DGPS (LADGPS) operation, the user’s receiver (rover) is set to receive signals from a nearest beacon (base) that provides signals meeting the appropriate standard, with the second-nearest acting as alternate. The reason for choosing the nearest beacon is that the accuracy of fixes (i.e. the position of user) is dominated by spatial dilution of precision (DOP) of the corrections. The degree of dilution increases with the distance of the rover from the base. In other words, the accuracy of the single base LADGPS service degrades as the users move away from the beacon. This is the major drawback of a single base LADGPS system. This paper attempts to highlight an approach that is being studied to minimize the spatial errors in the LADGPS system, hence enhancing the positioning accuracy provided by the service.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Local Area DGPS, DGPS Accuracy, GNSS Radio beacon, GNSS augmentation system
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:1356
Deposited By: En. Tajul Ariffin Musa
Deposited On:02 Mar 2007 18:13
Last Modified:01 Jun 2010 02:53

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