Laser Operation Characteristics Flashcards
Current tactical lasers operate in the _______ wavelength spectrum, which is not visible to the human eye.
Near Infrared
What are the four modes of operation of the FS3/LRAS?
Locate, Designate, Degraded, Training
The FS3 Eyesafe Laser Range Finder (ELRF) has a minimum operating ranger of _______ meters.
200 meters +/- 5 meters
The FS3 Eyesafe Laser Range Finder (ELRF) has a maximum range of ______ meters.
19,990 meters +/- 5 meters
The effective range of a laser range finder is dependent on the sensitivity of its _____.
Photoreceiver
_____ occurs when some of the laser energy goes beyond the target and impacts an object or terrain behind the target.
Over-Spill
Spill-over occurs when the laser spot is _____ than the intended target, or when there is unsteady tracking of the target from designator.
Larger
_____ occurs when some of the laser energy impacts either terrain or an object short of the intended target.
Under-Spill
The laser spot size is a function of _____ and the distance from the laser designator to the target.
Beam Divergence
If a designator has a beam divergence of 1.5 milliradian, its spot will have a diameter of approximately _____ meters at a distance of 3000 meters.
4.5 meters
An aircraft launching a laser guided weapon at a target, and then turns so the laser spot moves to the side of the target and out of view to the laser guided weapon seeker is an example of _____.
Podium Effect
When a laser seeker locker locks-on to other reflected energy instead of the target it is referred to as _____.
False Seeker Lock-On
Absorption of laser-radiated energy, such as into the road wheels of a vehicle or mouth of a tunnel is known as ______
Entrapment
The result of motion of the designator, or of the beam developed by the designator around the intended aim-point is referred as _____.
Spot Jitter
_____ and _____ attenuate laser energy and degrade the ability of Laser Spot Trackers and Laser guided weapons to see the spot.
Clouds, Fog
When a laser seeker detects too much IR energy from the sun it is known as ______.
Solar Saturation
When lasing targets during the hottest part of the day how can heat vapors affect the laser beam?
Beam may be Refracted
What protocol prohibits the use of lasers specifically designed to cause permanent blindness to unenhanced vision?
Protocol IV to the Certain Conventional Weapons Convention
An area that extends 120° (60° on either side of the Laser Target Line) is known as the _____
Optimal Attack Zone
A 20° wedge whose apex is at the target and extends 10° either side of the Laser Target Line is known as the _____.
Safety Zone
Pulse Repetition Frequency codes use a modified octal system that uses the numerical digits _____ through _____.
1, 8
Three-digit PRF equipment settings range from _____ to _____.
111-888
When using a mix of three-digit and four-digit PRF coded equipment the first digit of the four-digit code is always set to the numerical digit _____.
1
Invisible IR radiation from the laser designator can be refracted by the cornea and eye’s lens and transmitted through the ______ onto the retina.
Vitreous Humor
The _____ is the distance in which the small, concentrated laser energy output poses a hazard to the unaided eye that may range for several kilometers.
Nominal Ocular Hazard Distance
