In-vehicle navigation is to receive and demodulate the broadcast C/A code signals from satellites with the help of embedded GNSS module. Through the operation and each satellite pseudo-distance, using the distance rendezvous method to derive the receiver's longitude, latitude, altitude and the amount of time correction of the four parameters.GNSS module through the serial communication port constantly output NMEA format positioning information and auxiliary information for the receiver to choose the application. How to choose a high-precision vehicle GNSS positioning and navigation module, let's first understand the classification of GNSS module, and then bring you to understand how to determine the model.

Junoda's GNSS module is divided into single-frequency GPS positioning module, single-frequency BeiDou positioning module, single-frequency BeiDou multi-mode positioning module and dual-frequency BeiDou multi-mode positioning module according to the different positioning accuracy is divided into the standard high-precision GNSS positioning module and RTK high-precision GNSS positioning module; according to the different ways of using the module is divided into embedded built-in GNSS positioning module and external antenna integrated GNSS positioning module. According to the different ways of use, it is divided into embedded built-in GNSS positioning module and external antenna integrated GNSSG-mouse finished product; according to the different performance of the module, it is divided into standard high-precision GNSS positioning module, RTK high-precision GNSS positioning module, weak-signal GNSS+INS inertial combination navigation module and L1+L5 dual-frequency positioning module, and so on.

Standard high-precision positioning navigation: from mobile Internet to the Internet of Things, location is a basic indispensable information, the car driving on the road, you need to determine their location in real time, and use the built-in standard high-precision GNSS positioning module to obtain the location information, with electronic maps to achieve navigation, it can easily and accurately tell the driver to the destination of the shortest or fastest path. The standard high-precision positioning module (single-frequency GPS, single-frequency BDS, single-frequency BeiDou multi-mode, dual-frequency BeiDou multi-mode, antenna integration module, G-mouse) developed and launched by JUNOIDA can provide the manufacturing of positioning terminal products such as vehicle-mounted and portable hand-held products with high sensitivity, high precision, low-cost positioning, navigation and other solutions, which can satisfy the stringent requirements of professional positioning and personal consumption needs.

RTK high-precision positioning navigation: with the arrival of the new infrastructure boom, with the east wind of 5G + new infrastructure, driverless, self-driving and other technologies are being gradually improved, and for intelligent driving cars, the lanes are very narrow, and the distance between them and the obstacles on the side of the road is also shorter. This means that the car's requirement for positioning accuracy is 10 to 30 centimeters. The RTK high-precision positioning module developed and launched by Junoda has a built-in RTK algorithm, and it also supports BDS and GPS dual-satellite positioning systems, and with the high-precision positioning service of the national BeiDou augmentation network, it can achieve real-time centimeter-level positioning accuracy, which can satisfy the high-precision positioning requirements of intelligent driving cars.

The standard high-precision GNSS positioning module, RTK high-precision GNSS positioning module, inertial combination navigation module and L1+L5 dual-frequency positioning module mentioned above have been supplied in batch, and support the sample test, more high-precision car GNSS positioning and navigation module parameters can be accessed directly to Junoda official website or Taobao store.