How do GPS guided tours work?
We use a GPS receiver that receives Global Positioning System (GPS) signals for the purpose of determining the present location of a vehicle or vessel. From Wikipedia – Basic Concept of GPS: “A GPS receiver calculates its position by precisely timing the signals sent by the GPS satellites high above the Earth. Each satellite continually transmits messages containing the time the message was sent and precise orbital information. The receiver measures the transit time of each message and computes the distance to each satellite. Geometric trilateration is used to combine these distances with the location of the satellites to determine the receiver’s location.” The position of a vehicle or vessel on a GPS guided tour is determined by using data that includes direction, speed, and latitude and longitude coordinates. Audio commentaries are played when the precise location of the vehicle or vessel enters a GPS trigger point. Our GPS trigger points are created as GPS zones – (circles) or by lo
