NSI Extra Study Flashcards
(44 cards)
Radiation that strikes an object can be:
1)
2)
3)
1) Absorbed
2) Transmitted
3) Reflected
What is the primary means of NVG terrain flight navigation?
Pilotage
8 NVG Image Defects
1) Edge Shading
2) Edge Glow
3) Black Spots
4) Bright Spots
5) Wave Distortion
6) Shear Distortion
7) Chicken Wire Noise
8) Honey Comb / Fixed Pattern Noise
Attenuation of Energy occurs by
1) Absorption
2) Scattering
3) Refraction (Least Significant)
What 2 things does texture provide?
1) Recognition
2) Depth Perception
3 atmospheric molecules that most affect FLIR performance?
1) Water
2) Carbon Dioxide
3) Ozone
Define: Luminance
Reflected Light
Expressed in foot-lamberts (ft-L)
Define: Illuminance
The amount of light generated from a source
Expressed in Lumens per square meter (lm/m^2)
Define Thermal Mass
The ability of an object to store heat
Define: Terrain Contrast
A measure of the difference between reflectivity of 2 or more surfaces.
Define: Albedo
The ratio of incident energy to reflected energy
Relationship between illuminance and luminance.
Tactical Laser
1) Wavelength
2) NOHD
3) Pulses per second
1) 1.064 microns
2) 17.7 km
3) 10 Pulses per second
4 factors that influence the amount of light provided by the moon
1) Lunar Cycle (CADA)
2) Lunar Albedo
3) Variation in Earth-Moon distance
4) Moon Angle
3 major factors that influence NVD performance
1) Terrain Contrast (TAITS)
2) Atmospheric Conditions
3) Illuminations / Thermal Scene
Define: Visual Contrast
Variations in a static scene such as:
Swells or White Caps
Assists in: Altitude and Speed Estimation
What are the 6 measures that can be used to ensure integration and deconfliction in an objective area as RW assets flow in?
1) Separate Routing (SHARP-T)
2) Holding Areas
3) Altitude Separation
4) Rendezvous Points
5) Phase Lines
6) Time Separation
TSS FLIR detectors
1) Number
2) Type
1) 640 x 480
2) Indium Antinomide Detectors
FLIR Scan Type
Staring Focal Plane Array (FPA)
IR Pointer (AN/AAQ-30A)
1) Wavelength
2) NOHD
1) 0.860 Microns
2) 260m
Alignment Diode (AN/AAQ-30)
1) Wavelength
2) NOHD
1) 0.830 Microns
2) 500m
Eye Safe (ESAF) Laser
1) Wavelength
2) NOHD
3) Pulses per second
1) 1.57 microns
2) 0m
3) 1 Pulse per second
3 primary terrain factors for NVG mission planning
1) Terrain Contrast (CRS)
2) Terrain Reflectivity
3) Terrain Shadowing
Define: Emissivity
The ability of an object to emit thermal energy compared to a black body at the same temperature.
2 differences between Gen2 and Gen3 Image Intensifier tubes
1) Replaced Gen2 Multi-Alkali Photocathodes with Gen3 Galium Arsenide Photocathodes
2) Incorporated an Aluminum Oxide Ion Barrier