The most common GPS receivers have the following two

The most common GPS receivers have the following two:
1. Car navigation systems
    The development of computer and communications people's lives more quickly, easily, car navigation and mobile office has swept the world, and has gradually become an indispensable part of society. In Japan, the United States and other countries, for the convenience of users, many car manufacturers when the vehicle equipped with factory navigation and mobile office equipment. In China, similar to the product development work has just started recently.
    Car navigation device is a computer, communication and navigation, map information as one of the high-tech products, usually have a notebook PC, which are the basic functions of the network connections are easy to send fax and data communications; and built-in GPS receiver, providing GPS antenna interface, load positioning and navigation software, the use of GPS satellite signals received from the vehicle to provide all-weather, full-time location information domain, and can be displayed on the screen when the vehicle operation. Users can customize the route in advance, roadside markers and route points, save the pre-set route or routes traveled to another query. By querying the electronic map, the user can understand a region's geography and traffic conditions, increased the forecast of future trip, found some of the original when there is no road map, you can "record new way" to update the map.
2.GPS handset
    GPS handhelds is the use of GPS made the basic principles of design, compact size, easy to carry, an independent real-time location using the all-weather navigation equipment. Good handset necessary conditions are: high sensitivity, storage capacity, the external interface to complete.
    GPS handset-use can be divided into land use type, air-to-use, sea-to-use. Land-use handsets generally do not have built-in GPS maps, the main point of using rout