Demonstrates how GPS works using trilateration. Each satellite is at the center of a sphere and where they all intersect is the position of the GPS receiver.
GPS衛星 - 三邊測量
global positioning system、GLONASS、GPS、GPS satellites、Manuelas Favourites、satellite、triangulation、trilateration
全球定位系統、GLONASS、全球定位系統、GPS衛星、Manuelas收藏夾、衛星、三角、三邊測量
資料來源：openclipart ( https://openclipart.org/ )