Popular science: a brief analysis of the working principle of the vehicle GPS locator

  Improve the transportation infrastructure, transportation and other resources, to achieve the optimal allocation of resources has become a huge challenge for the national transportation industry management department and bus companies, taxi companies, logistics companies to transport operations as the main business enterprises are facing.



  The state regards the development of intelligent transportation as an important goal of the development of the transportation industry. As a part of the intelligent transportation system (ITS), vehicle monitoring and dispatching system has important social significance and value in building vehicle monitoring and dispatching system. The development and maturity of computer technology, geographic information technology, satellite positioning technology and mobile communication technology provide technical conditions for developing vehicle monitoring and dispatching system.

  The GPS locator is divided into single point positioning and relative positioning (differential positioning) according to the positioning mode. The GPS positioning is divided into single point positioning and relative positioning. Single point positioning is based on the observation data of a receiver to determine the location of the receiver. It can only use pseudo range measurement, and it can be used for rough navigation and location of vehicles and ships. Relative positioning (differential positioning method) is the relative position between the observation point is determined according to the observation data of more than two receivers, it can use the pseudorange measurement also can use phase measurement, geodetic or engineering measurement should use the phase observation value of relative positioning.


  GPS signal receiver's mission is: can be captured by satellite height cutoff signal to be measured point selected satellite, and track the satellite operation, GPS on the received signal for conversion, amplification and processing, in order to measure the propagation time of GPS signal from the satellite to the receiver antenna, interpreting the navigation message sent by the GPS satellite, real-time calculating 3D position, station location, or even three-dimensional velocity and time.

  In a simple way, the vehicle GPS positioning system is based on a mobile phone card in your vehicle terminal, which is transmitted to the backstage through the signal of the mobile phone to achieve the positioning. GPS positioning system has been applied to more and more industries along with the development of society. It plays the role of early supervision, late stage management, unified allocation, convenient management, improving our work efficiency and reducing cost.

  Shenzhen city RESIVE GPS positioning system is based on the vehicle information service system for monitoring purposes, the system with the GPS intelligent terminal, oil quantity sensor, can timely obtain the location information of the vehicle, the mileage data and other basic data, real-time monitoring of vehicle fuel consumption, to avoid stealing oil spill, is the enterprises and institutions fine management of vehicles, reduce vehicle operation cost assistant.