In 2 color comparison triggering, what indicates a mismatch?

In 2 color comparison triggering, what indicates a mismatch?

• A. The Intensity Difference Between The Two Wavelengths Matches The Aircraft's IR Signature
• B. The Intensity Difference Measured Between The Two Wavelengths Does Not Match The Intensity Difference Expected From The Aircraft's IR Signature
• C. The Instrument Fails To Measure Any Difference
• D. The Spectral Range Is Outside The Detector's Sensitivity

Answer: (B)

In two-color comparison triggering, the system relies on the difference in intensity between two spectral bands and compares it to what the aircraft’s infrared signature would produce. A mismatch is indicated when the measured intensity difference does not align with that expected difference. When the observed contrast between the two wavelengths deviates from the predicted contrast, the system flags that the observed scene does not match the aircraft’s signature, which helps prevent false alarms and ensures the trigger only fires when the target’s two-color response matches the model. If the measured difference happened to match the expected difference, that would mean a match rather than a mismatch. If no difference is measured at all, that could point to a sensor issue or an unusable signal rather than a diagnostic of a mismatch with the target’s signature. If the spectral range is outside the detector’s sensitivity, you can’t evaluate the difference at all, which is a hardware limitation, not an indicator of a mismatch in the two-color comparison.

In two-color comparison triggering, the system relies on the difference in intensity between two spectral bands and compares it to what the aircraft’s infrared signature would produce. A mismatch is indicated when the measured intensity difference does not align with that expected difference. When the observed contrast between the two wavelengths deviates from the predicted contrast, the system flags that the observed scene does not match the aircraft’s signature, which helps prevent false alarms and ensures the trigger only fires when the target’s two-color response matches the model.

If the measured difference happened to match the expected difference, that would mean a match rather than a mismatch. If no difference is measured at all, that could point to a sensor issue or an unusable signal rather than a diagnostic of a mismatch with the target’s signature. If the spectral range is outside the detector’s sensitivity, you can’t evaluate the difference at all, which is a hardware limitation, not an indicator of a mismatch in the two-color comparison.