MTS Flashcards
LRD characteristics
Laser Range Finder/Designator Type: Yttrium-Aluminum-Garnet (Nd:YAG) Wavelength: 1064 nm Class: 4 NOHD: 39,077.2 Meters Cannot see on NVG’s or FLIR
LTM characteristics
Laser Target Marker Type: Diode Wavelength: 860 +/- 20 nm Class 4 NOHD: 314.84 meters Can see on NVG’s and FLIR Continuous, fast blink (3x/sec), slow blink (1 per 2 seconds)
ELRF characteristics
Eyesafe Laser Range Finder Type: Optically pumped Erbium-Glass Wavelength: 1540 nm Class: 1 NOHD: 0 Meters
IZLID 200P Characteristics
- Wavelength: 808-840nm
- NOHD: 724
Midwave IR sensor wavelengths
3000-5000 nm
Visible DTV camera (2 of them)
400-700nm One (“Wide”) with fixed optics for wide/ULTW One (“TGT” targeting) with varying optics
LLTV Camera
700-900nm (near IR), uses same optical path as DTV
LOS stabilization and gimble movement
Torque motors drive the gimbles: two for elevation and one for azimuth. Elevation +20 to -105 degrees 360 degrees of azimuth
MTS Electronics Unit
Interfaces with HCU 1553 data bus, AVT, gimbal drive, video processing, mode control, symbol functions
Level
Brightness/”black bias” sets black bias by adjusting temperature window the MTS senses
Gain
Contrast controls temperature range for a given level varies temperature window discrimination from 1.5 degrees C (high gain) to large window of 34 (low gain)
Three Automatic Processing Modes
RAY -Rayleigh LIN - Linear LAP - Local area processing (usually preferred)
RAY
Rayleigh similar to LIN, but shows more contrast in darker tones
LIN
Linear sets gain/contrast and brightness/level to make use of dynamic range of display, affecting all areas of the image EQUALLY
LAP
Local Area Processing Evaluate contrast patterns on entire display, adjusts gain/contrast and level/brightness to tailor differently on different parts of the display
Polarity
White hot/black hot Warm objects are white in white hot and black in black hot
NOHD
Nominal ocular hazard distance - distance from operating laser at which radiant exposure is equal to the MPE (max permissible exposure) Eye: LRD: 39,077.2 m LTM: 314.84 m ELFR: 0 m
NUC
Non uniformity correction 1-pt: pixel response at one temperature 2-pt: various temperatures to be collected
PIM/PRF
pulse interval modulation-code requires a keyword pulse repetition frequency
Laser armed
-129 to +123 degrees azimuth +10 to -25 elevation Masked everywhere else
Cue Point
lat/long coordinates commanded by mission avionics (to target on tactical display)
Point
MTS directed to fixed location on earth’s surface
Scan
move in predetermined pattern
AVT mode
Automatic video track slave MTS TU based on movement of object
Offset from forward pointing
LOS may be directed to a position offset some number of degrees from forward
Rate mode
MTS TU move at a constant rate
GIP
EGI data valid WOW MTS powered and looking below horizon.
MTS nomenclature
AN/AAS-44C
Safety fan
Remote designator outside of +/- 30 degrees of aircraft heading
Podium Effect
Blocked Reflection. When the seeker is looking for scattered laser energy, it must be able to see the reflecting surface. When a laser designates a surface that the seeker cannot see, the reflections are blocked
CCM
A counter-countermeasures (CCM) feature within the missile is available. This feature allows the missile to overcome suspected active electro-optical countermeasures being used within the target area. The feature should only be used when active electronic counter-countermeasures (ECCM) is known to be deployed in the target area. - Because it may an adverse impact on missile performance.
Backscatter
laser energy scattered back in the direction of the seeker by an obscurant. Since backscatter energy competes with the reflected energy from the target, a seeker may attempt to lock onto the obscurant rather than the target.
