DRI Calculator

Sensor Resolution


Sensor Pixel Pitch


µm

Lens Focal Length

mm

Target

xm

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detection probability

  • HUMAN 1.8m x 0.5m | CD: 0.95m

    9 mm

    10 µm 640x480
    470 m
    120 m
    60 m
    12 µm
    470 m
    120 m
    60 m

CD: Critical Dimension

Info

Assumptions

Detection : Something is there.

Recognition : A vehicle is there.

Identification : The vehicle may be a humvee.


Conditions:
Thermal Imager- 2⁰ temp difference & σ=0.2 km⁻¹ atmospheric attenuation factor.

Day Imager- 1000 lux illumination and target contrast of 20%.