The RACELOGIC DGNSS Base Station is designed to improve positional accuracy of VBOXes and other compatible GPS/ GLONASS systems by calculating and transmitting differential correction data.
By programming the Base Station with a known position, it is able to accurately monitor the difference between its programmed position and the position that it is receiving via GPS/GLONASS.
The difference is then transmitted via radio to allow a remote GPS system to correct its position.
The differential correction message can be broadcasted in RTCM, CMR or proprietary RTK formats using an internal or mast mounted radio modem transmitter.
Depending on the type of Base Station and roving unit used, position accuracies of up to 2cm 95% CEP are available.
The telemetry modules from Racelogic are radio modems for use with the VBOX range. Each module contains a high power radio modem capable of transmitting and receiving RS232 serial data.
Two radio telemetry modules may be used to receive differential correction information (DGPS) from a Racelogic Base Station for local position correction.
The 2.4GHz modules can also be used to transmit VBOX serial data from a remote unit to a laptop PC at a maximum rate of 20Hz.
A typical use of the VBOX to PC telemetry is for pass by noise tests, where the speed of the vehicle needs to be measured externally.
There are a variety of telemetry systems available, employing a range of frequencies. Which version is used depends on the range over which they need to be employed, and local radio licensing regulations.
For advice as to the most suitable type for your application it is best to contact us to discuss your requirements.
Each radio is supplied with a magnetic mounting antenna, and is connected simply to the VBOX via one cable. See radio overview for more info.