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20 Cards in this Set
- Front
- Back
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what does "ALFS" stand for?
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airborne low frequency sonar
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what operating mode uses submerged,activley pinging sonar transducer to locate identify and track a target?
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dipping sonar-active
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what operating mode uses submerged sonar transducer to listen to target noises
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dipping sonar-passive
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what operating mode uses LOFAR, DIFAR, and VLAD sonobuoys to locate targets by
their noise signatures via returned up-link target data |
sonobuoy-passive
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what operating mode uses submerged sonar transducer to transmit and receive voice
signals to and from other USW helicopters, submarines, or similarly equipped surface ships. |
under water voice communication or (UVC)
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what operating mode uses submerged sonar transducer or BT sonobuoy to record the
difference in water temperature vs. depth. |
Bathythermograph (BT)
recording |
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Sonobuoys that transmit an acoustic pulse
and detect a resulting echo are classified as what type of sonobuoy? |
active sonobuoys
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Sonobuoys equipped with an EFS system
have what capability? |
a selectable 99 channel capability
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What information can a DIFAR sonobuoy
provide that a LOFAR sonobuoy cannot? |
location of target by triangulation
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what sonobuoy provides
water temperature data? |
bathythermograph
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what operating mode uses submerged sonar transducer or BT sonobuoy to record the
difference in water temperature vs. depth. |
Bathythermograph (BT)
recording |
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Sonobuoys that transmit an acoustic pulse
and detect a resulting echo are classified as what type of sonobuoy? |
active sonobuoys
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Sonobuoys equipped with an EFS system
have what capability? |
a selectable 99 channel capability
|
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What information can a DIFAR sonobuoy
provide that a LOFAR sonobuoy cannot? |
location of target by triangulation
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what sonobuoy provides
water temperature data? |
bathythermograph
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The OTPI system provides what information
to the USW pilot? |
sonobuoy bearing and location
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What are the two main factors that affect the
velocity of sound in seawater? |
temperature and salinity
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A sound wave traveling from an area of warm
water into an area of cold water will be affected in what way? |
the speed of sound decreases.
(sound increases as temp increase) |
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What type of naval aircraft employs the
AN/ASQ-13F dipping sonar system? |
SH-60R(up graded model of the SH-60B, and SH-60F)
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On a dipping sonar system, what component
generates and transmits sound energy into the water? |
transducer
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