© STid 2014 – No unauthorised reproduction | How to estimate the theoretical range
12
NA102A03_EN
Vehicle identification: TeleTag UHF
=>
Note
: angle
x
should be taken as an average, because it can differ according to vehicle model. It should
be estimated on the basis of a predefined fixed antenna height.
=>
Note
: angle
y
should be taken as an average, because it can differ according to vehicle model and
lateral position in relation to the antenna.
This table should be used to estimate the
reduction in range
due to the angles between antenna and tag (which determine
the adjustment coefficient to be applied to the nominal range
as a result of the approximate horizontal and vertical angles):
Corrected Range (
Dc
) = nominal range (D) * Adjustment
Coefficient (
Angle x
) * Adjustment coefficient (
Angle y
)
D1
Angle idéal
Tag parallèle à l’antenne / lecteur
Position réelle
D2
Angle idéal
Tag parallèle à l’antenne / lecteur
Position réelle
angle y
Angle X°
Adjustment Coefficient
15°
0.96
20°
0.94
25°
0.90
30°
0.87
35°
0.82
40°
0.76
45°
0.71
