Figure 3.14: install radar deflection angle and declination angle according to the reference value
(f).after finish setting above parameter, click button” all send out” to finish sending parameter to radar,
and click button “save” to save the current setting. As shown in figure 3.15.
Figure 3.15: Send out all radar parameter and save
(g).for radar installation, declination angle can be set exactly by electronic instrument, meanwhile the
offset of declination angle does not affect the performance of radar greatly .while it is difficult to
set the deflection angle in left and right direction exactly by electronic instrument and the deflection
angle in left and right direction affects the performance of the radar greatly, so the radar calibration
needed to be implemented to correct the installation error. Take figure 3.16 as example, the
suggested radar deflection angle is 16.3°, declination angle is 14.5°. Assuming the triggering
distance is 24m, the installation height is 7.5m, the horizontal deviation is -7.0m, at this point , the
radar will be installed by deflection angle 16.3°,declination angle14.5°(certainly , a difference may
exist between real value and expect value)
Figure 3.16: Radar deflection angle car passing calibration
After that ,using the car passing calibration function when vehicle are passing by, the radar will
implement data collection and calculate the deflection angle then feedback the angle value .
Figure 3.17: Radar deflection angle calibration and feedback
As shown in figure 3.17, the corrected value is 16.7°, differs by 0.4°from the reference value
(16.3°), according to the regulation, when corrected value differs by more than 1°from the reference
value, radar need to be adjusted and calibrated repeatedly till the difference is within ±1°.