DRI Calculator
Detection · Recognition · Identification — Johnson Criteria
Atmosphere
Lens Quality (MTF)
Mount Height & Tilt
Illumination / Low Light
Simulation Rendering
Based on NATO Johnson Criteria: 1/3/6 cycles per target (detection/recognition/identification). Each cycle = 2 pixels across the target's critical dimension. Results are theoretical 50% probability under ideal conditions.
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Add targets from the left panel to calculate DRI ranges