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Geo Events

Survey Earth in a Day 4D

Survey Earth in a Day 4D June 21, 2015 – 4th Annual Global Celebration of the Land Surveying Profession Welcome Surveyor! At Noon, on the day of the solstice, June 21,

Global Positioning System

RINEX – Receiver Independent Exchange Format

The first requirement for  having a receiver independent exchange format arisen for easy exchange of the GPS data to be collected during the first large European GPS campaign EUREF 89,

Global Positioning System Surveying

GPS Field Observation and Data Processing

1. Planning of GPS observation Before starting a GPS Survey Campaign, the following points should be kept in mind. 1.1. Pre Survey planning:- A satellite “sky plot” or visibility chart