Furthermore, once national governments establish GPS stations to facilitate resource surveys, geological measurements and map creation, these sites can be used to track changes in the natural environment. Traditional on-the-ground triangulation measurements are time-consuming, to say nothing of the need for obvious landmarks. GPS measurements on the other hand completely overcome spatial limitations, making it easier to spot illegal or unauthorized use of mountainous regions or forests.
其次如資源調查、大地測量、地圖製作，各國政府在各地建立 GPS 量測點後，經量測點可比對座標變化，而傳統的三角測量耗時，況且必須有明顯的地標，而 GPS 的量測完全超越空間障礙，使得山區、森林的違法、違規使用無所遁形。