An Experiment about Trilateration and 
Correction of Clock Error

-Tasks of the Transmitter-

A GPS-receiving device from the firm Garmin

Preparation
•	In this experiment, you will be using a GPS-device. 
•	Get acquainted with the functions of the GPS-device. Learn how to read the exact time (to the second) and the current velocity. 

Procedure
•	Place yourself in any corner on the field or meadow. Try to be as far away from the other signals as possible. 
•	When the Recorder gives you the GO-signal, make a mental note of the time indicated on the GPS-device and start walking at a constant speed towards the position of the Receiver and Recorder. Make sure that your walking speed lies between 2 and 7 km/h. 
•	When you reach your destination, tell the Recorder the start time and the velocity indicated on the GPS-device.