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2. Passive infrared sensor - Wikipedia

   en.wikipedia.org/wiki/Passive_infrared_sensor

   The sensor converts the resulting change in the incoming infrared radiation into a change in the output voltage, and this triggers the detection. Objects of similar temperature but different surface characteristics may also have a different infrared emission pattern, and thus moving them with respect to the background may trigger the detector ...

3. Infrared homing - Wikipedia

   en.wikipedia.org/wiki/Infrared_homing

   The infrared sensor package on the tip or head of a heat-seeking missile is known as the ... Air force, model 2) and the name Falcon. IR and semi-active radar ...

4. List of military electronics of the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_military...

   Day/Night Imager hand-held passive thermal infrared electro-optical sensor used to classify and identify active targets [159] AN/PSQ-22 Battery powered Hand-Held Programmer-Monitor (HHPM) Very High Frequency (VHF) radio receiver that receives, demodulates, decodes, and displays symbols representative of sensor set message transmissions.

5. Infrared search and track - Wikipedia

   en.wikipedia.org/wiki/Infrared_search_and_track

   An IRST sensor on a Sukhoi Su-35. An Infrared Search and Track (IRST) system (sometimes known as infrared sighting and tracking) is a method for detecting and tracking objects which give off infrared radiation, such as the infrared signatures of jet aircraft and helicopters.

6. List of sensors - Wikipedia

   en.wikipedia.org/wiki/List_of_sensors

   Crankshaft position sensor (CKP) Curb feeler; Defect detector; Engine coolant temperature sensor; Hall effect sensor; Wheel speed sensor; Airbag sensors; Automatic transmission speed sensor; Brake fluid pressure sensor; Camshaft position sensor (CMP) Cylinder Head Temperature gauge; Engine crankcase pressure sensor; Exhaust gas temperature ...

7. Nondispersive infrared sensor - Wikipedia

   en.wikipedia.org/wiki/Nondispersive_infrared_sensor

   A nondispersive infrared sensor (or NDIR sensor) is a simple spectroscopic sensor often used as a gas detector.It is non-dispersive in the fact that no dispersive element (e.g a prism or diffraction grating as is often present in other spectrometers) is used to separate out (like a monochromator) the broadband light into a narrow spectrum suitable for gas sensing.