King 2006 Article

SatNavs is the satellite tracking system. It is used to get the accurate tracking of current location. It can be fitted in to a car and also can be fit in a handheld or palmtop. 

Sat Nav is comprised of two systems. GPS receiver is used to get the signals from GPS satellite and CPU display Unit is use to show maps on the screen. It tracks the location by using signals from GPS receivers and shows the location by a dot on the map. 

SatNav is a perfect guide for you on your trip. When you plan to go somewhere you can take the help of your SatNav. You can get the exact idea of that place by watching its map. When you go on to the journey it guides you throughout the journey. Some systems have voice features which guide you vocally. If you take a wrong turn it immediately warns you about it. 

You can download the maps of various place, cities and countries in it. Some systems also support external memory. So you can store maps on SD cards. CDs are also being used for this purpose in many handhelds like iPAQ 214 nowadays. You can also personalize the view of the map by setting different directions of view. 

SatNavs also warn you about the traffic jam on your way. Some systems use point of interest concept to locate the hospitals, gas stations, police mobiles, parks, restaurants and markets. A very unique and very advantageous feature is the information regarding weather of the interested place. You can know if there is raining or not in the place you are going to by using PDA Cradle. 

GPS is the guide for us. Like any human guide, it guides us through the way. It tells us different directions. It tells us about the important places near us. Thus, it does the work of any human guide. Human guides have to travel every inch of ground to gain the familiarity of a place. 

But the GPS does no travel prior guiding. They don’t have to. They just ask from the terminal database about a place and you get the information in nanoseconds. Human guides are specific to one place but GPS systems know the places miles away form them. 

The pocket PC has software installed in it which connects you to the GPS. Using this Car Mount software you locate your position. By using this software you can also download the detailed map of the place you desire. Moreover theses maps can also be personalized using the GPS software. 

There is specialized GPS software available. For example, some software are used for surface features like natural features such as rivers, mountains, lakes and some constructed land features like roads, bridges etc. some GPS software is for aviation. You use it while flying and still some is for marine use to track the location in sea and ocean. 

Some very sophisticated pocket PC or handhelds like Go 910 have vocal systems. You do not have to see the LCD of your pocket pc time and again during driving. Turn on the speaker and listen to the guidance information you requested for. This security system has been very successful.