Car Navigation DevicesWe are living in an era where state-of-the art car navigation devices are not a myth but a reality. These GPS enabled systems use a technology that helps them to provide the driver of the car with the exact location of the car, and also helps in guiding the car to the destination. The GPS car navigation systems use the method of finding your position or that of the destination at any specific time by calculating the latitude and longitude, which is shown as x/y coordinates. The destination or the location of your car can be estimated by the GPS receiver. The average accuracy of the GPRS navigational devices are around <15 meter. The GPS enabled systems can pinpoint your cars location by processing the navigational data using software. As a result, the GPS enabled systems are able to display the exact position on the road map. The route guidance in GPS car navigation systems are shown with the help of mapping software. The final results or the pin-pointing of the destination will tell you quite explicitly about how you can reach the predetermined destination. Some of the state-of-the art car navigation devices can direct you or the driver of a car towards the destination using voice prompters. Some of the basic GPS car navigation systems include: · Connection with the vehicle speed sensor · A GPS receiver · Digital maps (CD or DVD-Rom) · Mapping software · Display · Internal gyroscope The GPRS navigational devices can be divided into two main categories, which are portable or handheld devices and the built-in/onboard navigational devices. Due to the use of advanced technology, you will find onboard and offboard hybrid GPRS navigational devices. The built-in GPRS navigational devices have large and bright screens that offer comfortable viewing to the driver of the car at an arms length. They are installed on the dashboard and are capable of providing voice guidance too. One of the main disadvantages is that you can't uninstall the GPS car navigation systems. All these systems are pre-installed in a car and are available with almost all the car models today. On the other hand, portable car navigation devices have a relatively smaller screen as compared to the built-in car navigators and are mostly powered by a battery. The portable GPS car navigation systems are mostly available without voice prompts or guidance. The main advantage of these GPS car navigation systems is that they can be used in multiple cars. This basically means that you can uninstall the GPRS navigational devices from your car and install it in another car. You can even carry it with you on your trekking trips. The portable GPRS navigation devices relies mostly only the car navigation system data. If you are planning to buy GPRS navigational devices, then you need to fist identify if you need a built-in model or a portable model. The price factor comes into play here because the portable GPS car navigation systems are not as expensive as the built-in navigational devices. |