Sample Calculation (Police Traffic Radar Handbook)

Sample Form

Compute Speed Error Due to
Frequency Error (from center).

FORM input image

Sample Form Results

Speed Error and Displayed Speed
due to Transmit Frequency Error

Target Speed (V): 75 mph
Transmited Frequency (f_x): 24.325 GHz
Design (Center) Frequency (f_o): 24.150 GHz (K band)
Frequency Offset (f_x - f_o): 0.175 GHz
175 MHz
0.72 percent

V_m = 1.00724637681159 (V)

Displayed Speed: 76 mph
Speed Error: 0.54 mph

Police Traffic Radar Handbook
Chapter 5.2

Target Speed (V):	75 mph
Transmited Frequency (f_x):	24.325 GHz
Design (Center) Frequency (f_o):	24.150 GHz (K band)
Frequency Offset (f_x - f_o):	0.175 GHz 175 MHz 0.72 percent

V_m = 1.00724637681159 (V)

Displayed Speed:	76 mph
Speed Error:	0.54 mph