Stid TeleTag System, Implementation Manual

Page: 13 / 16

© STid 2014 – No unauthorised reproduction | How to estimate the theoretical range 13
NA102A03_EN
Vehicle identification: TeleTag UHF
Examples
Example 1:
Let us consider a URC reader and TeleTag on a standard windscreen.

Nominal range: 7 m

Average angle x: 20°

Average angle y: 30°
Corrected Range ( Dc ) = 7 * 0.94 * 0.87 = 5.72 m
Example 2:
Let us consider a URC reader and TeleTag on a heat-reflective windscreen.

Nominal range: 4 m

Average angle x: 20°

Average angle y: 30°
Corrected Range ( Dc ) = 4 * 0.94 * 0.87 = 3.27 m
STEP TWO: calculate the Ground Range ( Ds )
The angle z adjustment coefficient is applied to Corrected Range (
Dc
) to give the Ground Range ( Ds ).
For example 1:
Dc = 5.72. If angle Z is 30°, then:
Ds = 5.72m * 0.87 = 4.97 m
For example 2:
Dc = 3.27. If angle Z is 30°, then:
Ds = 3.27m * 0.87 = 2.84 m
Dc : Distance de lecture corrigée
Ds: Distance au sol
Ds
Dc