HEX here3, Руководство пользователя, Страница: 12 / 18

Before using, make sure the hardware are connected correctly ： Ground side: The base station
module is connected to the computer port through USB port; a telemetry module is connected to
another USB port of the same computer. UAV side: Here3 is connected to the flight controller
CAN connector; telemetry module is connected to the TELEM interface.
Antenna Placing
Placing the RTK Antenna is very important for getting precise RTK positioning
For the working condition of RTK, there are some special requirements that are more demanding
than regular GPS.
The best environment requires the base and rover antenna to have clear view of the sky that is
30 degrees above horizon. RTK antenna can be elevated but make sure that there are no
obstacles around, such as buildings, trees, cars, and etc.
Example of bad environment: indoors, urban area, forest, near the ground.
Example of good environment: Open spaces, peak of the mountains, roof of the buildings.
Do not place the antenna near electronic devices, as high power electronic devices nearby may
affect the radio frequency noise of GPS signal. Examples are mobile phone base stations, high
voltage transformers, and etc.
Please place the base station in an outdoor environment with sufficient sky coverage to obtain a
good satellite signal. Place the base station on a stable and elevated platform, such as a tripod.