During the May 1st holiday that just ended, I believe that many car-owning friends have turned on the self-driving tour mode. During the whole self-driving tour, the most used car navigation must be the car navigation. After all, aside from a local guide, navigation is really the only thing that can get you to the right place. In this article, SKYLAB, a positioning module developer, will introduce GPS satellite positioning solutions suitable for in-vehicle navigation, such as the GPS module SKG12BL, which is widely used in in-vehicle navigation.
Car navigation
Car navigation is carried out by using car GPS (Global Positioning System) with electronic map, which can easily and accurately tell the driver the shortest or fastest path to the destination. Each part of the vehicle positioning and navigation system is composed of: electronic map that can be navigated; search and processing of map data; positioning module; map matching; prescribed walking path; path guidance; The positioning module is a satellite signal receiver, which receives and demodulates the broadcast C/A code signal of the satellite. By calculating the pseudo-distance with each satellite, the four parameters of longitude, latitude, altitude and time correction of the receiver are obtained by using the distance rendezvous method. The GPS module continuously outputs the positioning information and auxiliary information in NMEA format through the serial communication port for the receiver to choose the application.
The selection of GPS module in car navigation has the following four important factors: satellite signal, signal reception, signal processing and map database:
Car satellite navigation systems rely on the Global Positioning System (GPS) to determine the car's location. Basically, GPS needs to know the longitude and latitude of the car, and in some special cases, GPS also needs to know the altitude for accurate positioning.
GPS systems work by parsing the signals received from geostationary satellites. Projected on a vertical plane, these signals can be visualized as inverted funnels one by one. When the bottom halves of these "funnels" overlap, the GPS parser can calculate the coordinates of the car's location.
The signal received by the GPS and the information provided by the speedometer device should be provided to the car navigation system through the receiver, and analyzed and processed by the software system, and superimposed on the stored map.
When the coordinate information provided by GPS is superimposed on the electronic map, the driver can see his current position and future direction.
SKG12BL
The GPS module SKG12BL, which is used more in car navigation, is a complete GPS module with high sensitivity, low power consumption, miniaturization, and its extremely high tracking sensitivity greatly expands its positioning coverage. Ordinary GPS receiver modules cannot locate In places such as narrow urban sky and dense jungle environment, SKG12BL can be positioned with high precision. The module's high sensitivity, small static drift, low power consumption and lightweight volume are very suitable for applications in vehicle and handheld devices such as PDA, vehicle monitoring, mobile phones, cameras and other mobile positioning systems. It is the best choice for GPS product applications.
SKG12BL characteristic parameters
The above is the specific information of the GPS module SKG12BL, a GPS satellite positioning solution suitable for car navigation, compiled by SKYLAB. Engineers in need can refer to it. The GPS module SKG12BL has been shipped across the board. For specific product information, you can consult the SKYLAB official website or Alibaba store.