Dec 03 2011
GPS in boat
The GPS systems (Global Positioning System) are used for determining the exact location of on object in the earth and this system can be used when traveling in a boat. When a satellite sends a signal the GPS receiver picks up these signals and gives us the exact location. The accuracy of this system is pin point and will never go wrong.
There are many satellites that transmit signals simultaneously, but the GPS receivers do not receive these signals. Seeing as that the distance of each satellite from the reception unit will be different. By knowing the speed of light, speed of signal and the transmission rate the receiver can calculate the exact distance to the satellite.
It was earlier used for military purpose and in 1993 it was available for civilian use. These systems were degraded and thus affected its accuracy. Other factors affecting the accuracy of GPS in boat navigation depends on the speed of the boat, strength of the signals and environmental factors like geomagnetic and gravitational forces.
Signal strength depends on the distance of the satellite to the receiver, at the beginning the GPS system evaluates all the signals and selects the best 5 nearest satellite signals for navigation.
Advanced satellite navigation system called as Chart plotter can be used in boat navigation for determining your boats progress. It uses electronic chart display and an information system to display your accurate location in a chart, map or a specified area.
It will also give the distance to the nearest land or shore. To find the best and easiest route to a specific destination one can connect this GPS system to the boat radar. This will give you the track line or the way point to your destination.
