GPS antenna for more accurate positions!

You GPS unit works fine in the great outdoors, but you want to try navigating in a city. So, you download a map which covers the city in which you want to navigate, but suddenly find that once you are amongst the tall buildings, the navigation becomes steadily more and more unreliable. You need a GPS antenna, which will enable the system to collect a better signal and give you the kind of accuracy that you have come to expect from your device. To understand whether you really need a GPS antenna, however, it helps to know how GPS works.

You are probably aware that GPS systems pull a signal from the airwaves which comes from one of a number of satellites that orbit the Earth. However, what you probably did not know was that these signals come from all kinds of angles and all kinds of distances, depending on which satellite is in view. Having a GPS antenna will ensure that your system is able to ‘see’ more satellites than others, and this will enable a more accurate position to be established.

The reason is that, like regular orienteering, the more fixes a system can get, the more chance they have of being able to accurately triangulate the position of the unit. The GPS antenna helps to ensure that the most satellite signals that the system is able to deal with can be pulled down, this increasing accuracy.

Buildings, tunnels and other obstructions are all going to block signals, and if you are in a vehicle that regularly travels in towns, then a GPS antenna is a good idea.

GPS
Maps / Software
Tracking

About The Author:

Guy Lecky-Thompson is a successful author and publisher at www.1st-at-gps-tracking.com. Recommending gps equipment and associated products
27-06-04