Principle and application of GPS
The basic principle of GPS positioningGPS is the use of satellite positioning basic triangle positioning principle, GPS receiving device to transmit radio signals in time measurement to measure the distance, the distance to determine the position of the satellite in space, this is a kind of high precision positioning and orbit observation way. That satellite in 11000 miles high, measuring the distance from us, first to 11000 miles radius, this satellite drew a circle as the center, and the location is in a sphere.Application of GPS in personal positioningThe first voice MMS GPS locator (what is GPS) - sunstudy wholly owned technology MMS GPS locator for the column, it built the map data, without the background support, combined with the GPS global positioning system, GSM communication technology, embedded technology, GIS technology, voice broadcast GIS search engine, image processing and image transmission technology, direct response Chinese terminal address, MMS, voice broadcast or location
GPS principle is simply to determine the target coordinates through the navigation satellite, and then map coordinates to determine the specific location of the target. GPS positioning principle is based on the high speed motion of the satellite instantaneous position as the known starting data, the use of spatial distance resection method to determine the location of the point to be measured. The global positioning system is a radio space positioning system, it uses the navigation satellite and the ground station to provide all-weather and global high precision, continuous and real-time three-dimensional coordinates (latitude, longitude, elevation), three-dimensional velocity and location information anywhere on the earth's surface for positioning and navigation.
Two, GPS in the patrol line vehicle management specific applicationPatrol vehicle monitoring and scheduling program to serve the need to monitor the status of the line through the car service enterprises or management departments. The program will line planning and the actual line of work combined with key business as the core, to inspect the vehicle location information is obtained by GPS real-time monitoring of vehicle inspection task completion, through the vehicle from the current state of the key points of the distance and vehicle automatic selection of vehicle scheduling. Finally, combined with vehicle analysis and careful statistical report, the project can be planned, executed, and can be evaluated. The program is currently in the industry by the successful practitioners of 666GPS, and in the 2010 Guangzhou Asian Games on the China Telecom line of vehicles successfully used.
Three, the application of GPS in car navigation and traffic managementThree dimensional navigation is the primary function of GPS, aircraft, ships, ground vehicles and pedestrians can use GPS navigation navigation. Vehicle navigation system is a new technology developed on the basis of global positioning system GPS. The vehicle navigation system is composed of GPS navigation, autonomous navigation, microprocessor, vehicle speed sensor, gyro sensor, CD-ROM driver, LCD display. GPS navigation system and electronic map, radio communication network, computer vehicle management information system can be achieved, such as vehicle tracking and traffic management and many other functions.GPS positioning system is not only used for navigation and positioning of missile, spacecraft, is widely used in automobile, ship, aircraft navigation, public security, banking, medical, fire protection, the establishment of monitoring alarm and rescue system with it, the establishment of a modern enterprise logistics management system with it, agriculture, forestry, environmental protection, resource investigation, physical exploration, telecom all cannot do without navigation, especially with the integration of micro satellite navigation receiver, a personal information terminal of various financial communication, computer and GPS in one of the satellite navigation technology applied to the public from professional application, become after communications and Internet IT third new growth points. GPS as the representative of the satellite navigation and positioning industry is attracting more and more attention.
