16
2
Requirements for GPS Antenna Installation Positions
45
°
>2m
Figure 2
1.The GPS antenna should be installed in an open space and is far
from high buildings. The GPS antenna has a vertical visual angle no
less than 90
°
, as shown in Figure 1.
2.The GPS antenna should be installed in the protection range of the
lightning rod (within the tilt angle of 45
°
under the lightning rod). The
horizontal distance between the antenna and the lightning rod should
be longer than 2 m, as shown in Figure 2.
3.If multiple GPS antennas are installed, ensure that the horizontal
distance between antennas is greater than 0.5 m.
4.The GPS antenna should be far from:
•High-voltage power cables
•Strong radiation area of the TV transmission station
•Radiation area of the main lobe of the RF antenna
•Radiation area of the microwave antenna
•Other areas with inter-frequency interference or strong
electromagnetic interference
B
ui
ldi
ng
≥ 90
°
B
ui
ldi
ng
Figure 1
General Requirements
This describes the requirements for the installation positions of the GPS antennas under different
installation environments.
Requirements for Installation on the Roof
1.The GPS antenna should be installed in the middle of a roof. Avoid installing it on the surrounding walls.
2.The GPS shall not be installed on the corner of a roof, which is vulnerable to lightning strikes.
3.The GPS antenna should be installed as far as possible from ancillary buildings on the roof.
Requirements for Installation near the Tower
1.The GPS antenna should be installed on the top of the equipment room or of the outdoor macro-BTS
near the tower.
2.The GPS antenna should not be installed in the following areas:
•Any area on the tower body
•Cabling rack between the tower and the equipment room
Requirements for Installation on the Pole
1.The GPS antenna should be installed in the middle of the pole rather than on the top of it.
2.When the GPS antenna and the main equipment are installed on the same pole, the vertical distance
between them should be less than 2 m.
NOTE
