Electro optical Spectrum Flashcards
Define EO
Science and technology of generation, modulation,detection and measurement or display of optical radiation by electrical means
IR BAND: NIR
Solar reflections, very hot objects
0.72-3 microns
IR BAND: Mid IR
Man made reflections, solar reflections
3-6 microns
IR BAND: Far IR
Natural background peak emissions, man made emissions
6-15 microns
Infrared radiation characteristics
All objects about absolute zero emit IR radiation
Absolute 0= 0K = -273C
What three things can happen to energy
Absorption
Reflection
Transmission
Characteristics of lasers
Monochromatic
Highly coherent in Phase
Sharply focused beam
Highly directional
Discuss some applications of EO sensors
EO/IR imaging Systems Video trackers Detectors Terminal homing seekers Automatic target recognizes IRCM Systems Laser Systems Space imaging systems
Automatic target recognizes
Provide capability to find and classify tgts autonomously
- ELINT platforms
- A/G munitions
Provide capability to assist in weapon deliveries
- present key info for man in the loop decisions
- intelligent tracking and terminal homing (pattern recognition)
Types of terminal homing seekers
Imaging
Nonimaging
Types of thermal detectors
Thermal
Quantum
-*cooling
Infrared detection consultations: Source Heating
Sun angle Season Weather Orientation Thermal crossover
Infrared detection considerations: Source viewing
Background
Approach axis
IR Decoys
Distance
Define black body
Hypothetical entity that absorbs all energy
Define emissivity
Ratio of radiant exitance of a given object and a theoretical black body at the same temp
