What is...? GPS/GNSS survey is a method of surveying and mapping the earth's surface using satellites and ground-based receivers. GNSS receivers determine the position of a point on the earth's surface by receiving signals from multiple satellites in space. The receivers then use triangulation to calculate the exact location of the point based on the time it takes for the signals to reach the receiver. The location is then translated into the OSGB36(15) coordinate system and it is used to either orientate topographic surveys or to conduct setting-out works on some given coordinates.
​
How we work? We use Emlid GNSS receivers in conjunction with the O.S. Active Network (OS Net). The methods employed are Post processing kinematic (PPK) and Real-time kinematic (RTK) and we are familiar with RINEX files to analyze the data for the best accuracy.
Satellite Observations - Quality Report
GNSS Base and Rover System
