Wavetronix SmartSensor Matrix (SS-225) - User Guide - Manual (Page 112)

APPENDIX 111
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atri
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Port A & Port C Port B & Port D Port A & Port C Port B & Port D
Figure D.7 – Click 222 Ports A, B, C and D
Appendix E – Matrix Extended Range
There are a few things that you should be aware of when using SmartSensor Matrix near the
edge of its 140 foot range..
Angle Resolution
At ranges of 0–100 feet, the angular resolution is sufficient to provide a ground range reso-
lution that is close to the average width of a lane. This allows the sensor algorithms to dis-
tinguish between two vehicles traveling side by side in adjacent lanes.
As the range is extended, the ground resolution gets larger. At 140 feet, the smallest beam’s
footprint is about 11 feet and the outside antennas have a footprint of about 18 feet. This
means that even though the center of the sensor’s view may be able to detect adjacent tar-
gets, these same targets may not be detected when they are close to the edges of the sensor’s
view.