Systems 2 Exam the BALLs Flashcards
Give wavelength, beam divergence and ocular hazard distances for each laser for MTS-A.
LRD: 1.064 microns, divergence .15 mrad, NOHD 39 km
LTM: 0.860 +/- 0.02 microns, divergence 1.5 mrad, NOHD of 300m
ELRF: 1.540 microns
Define Emissivity per the MTS-A
The RATIO EMITTED BY REAL-WORLD SURFACE to THE RADIATION EMITTED BY A THEORETICAL SURFACE (BLACKBODY) at the same temperature and under the same conditions
What is the trend of items (composition, paint, etc) to their emissivity levels
Polished metal has a lower emissivity than painted object.
Blackbody is the highest with 1.00
Paint is .95
Polished aluminum is 0.08
What is the difference between INTERNAL and EXTERNAL mode for the MTS-A
INTERNAL = ARS data is derived from the MTS-A IMU and the internal GPS receiver in the EU. EXTERNAL = ARS data is derived from the MST-A IMU and C-MIGITS GPS
How is beam divergence measured and what does it mean?
Measured in milliradians. 1 milliradian = 1 ft for every 1000 feet of slant range. example: .10 mr at 30k slant range = 3 ft diameter.
Label the locations of the Narrow Laser Illuminator (NLI), Green Laser Illuminator (LI-G), Electro-Optical Narrow (EON) sensor, Electro-Optical Wide (EOW) sensor, and IR sensor
Draw these out
List the wavelength, horizontal beam divergence and vertical beam divergence, and NOHD of the MX-15 Narrow Laser Illuminator (NLI)
Wavelength: 0.860 +/- 0.03 microns
Horizontal Beam Divergence: 1.5 mrad
Vertical Beam Divergence: 1.0 mrad
NOHD: 370 m
List the wavelength, beam divergence, and NOHD of the MX-15 Green Laser Illuminator (LI-G)
Wavelength: 0.532 +/- 0.003 microns
Beam Divergence: 1.5 mrad
NOHD: 829 m
Describe the difference between a major and minor alarm
The operator is notified by a pop-up alert on the video overlay
MAJOR alarm - indicates a capability loss
MINOR alarm - indicates an out-of-tolerance condition
