Emerging permanent reference station networks
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(Reporter 50, April 2004) Over the last few years, permanent reference station installations have emerged in several countries. These installations allow for roving GPS users in the field to achieve instant centimetre accuracies without the need of setting up a GPS reference station on a known station. This is quite appealing, since in areas with considerable GPS surveying activity, a number of users might share the infrastructure and the associated costs. Some of the installations are operated by companies and provide a service to the surveying community.
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