For best performance, it is necessary to mount the GNSS antenna(s) away from any object that may shadow the satellite signal. To reduce the influence of multipath, the antenna(s) should be mounted on a metal surface by using the magnetic mounts. We recommend to keep the system at least 30 cm away from glass surface or outer edges of the vehicle.
• It is important that both antennas are from GeneSys and of the same type. Using two different types of antenna may cause the solution to fail.
Dual antenna mounting offsets
The easiest way to install the dual antennas is to place both antennas on the same longitudinal axis at the same height. The primary GNSS antenna should be installed behind the second antenna with a minimum distance of 50 cm to a maximum distance of 200 cm. Thus, no configuration of the offsets between the Secondary GNSS Antenna to the Primary GNSS Antenna in the ADMA Webinterface is necessary. Only the mounting offsets between Primary GNSS Antenna and ADMA must be defined.
In case of lateral or height offset between the antennas, the descending offsets must be configured in XYZ axis via ADMA Webinterface.
Determining the offset between the GNSS Antennas and ADMA
Mounting offsets Primary GNSS Antenna to ADMA
The Primary GNSS Antenna always refer to GNSS ANT1 interface of the ADMA. This offset must always be determined. (Please refer to article Compensating the installation position).
Mounting offsets Secondary GNSS Antenna to Primary GNSS Antenna
The Secondary GNSS Antenna refers to the Primary GNSS Antenna, in case of lateral and/or height offset between Primary and Secondary GNSS Antenna the offsets must be determined.
These offsets have to be configured in the ADMA 6️⃣ Webinterface at Parameters.