Examines the theoretical and mathematical concepts underlying the use of GPS. The course involves pre-mission planning, field collection of geographic data and post processing of the data to increase accuracy. Database management and integration of the data into a Geographic Information System, with production of the final map is also covered. Offered Fall Term. Prerequisites: ENVL 2100 AND ENVL 2200 AND ENVL 2400 AND ENVL 2600 with a grade of C or better.