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12 Cards in this Set
- Front
- Back
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Modes of Transmission
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1. Simplex (Transfer data in one single direction, e.g. TV)
2. Full-Duplex (Transmission in 2 directions simultaneously, e.g. Phone) 3. Half-Duplex (Transmission in 2 direction but not simultaneously, e.g. walkie-talkie) |
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RADAR
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Electronic Equipment that detects the presence, direction (bearing), height (Altitude), & distance of objects by using reflected electromagnetic energy. (object-detecting system)
1. Radio 2. Detection 3. And 4. Ranging |
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Types of Radar
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1. Air Search (air Targets)
2. Surface Search/ Navigation search (surface/low-flying targets/360 of LOA) 3. Fire Control (target tracking) • Designation Phase • Acquisition Phase • Tracking Phase |
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What is Clutter?
two types? |
Unwanted Echoes in Radar System. Can be caused by ground, sea, rain, insects, & atmospheric turbulences.
1. Ground Clutter (Returns are generally stationary) 2. Sea Clutter (Disturbs radar –echoes of sea wave crust. It gets Doppler affect (move away) |
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Types of Radio Waves
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1. Sky waves (reflected back from Ionosphere)
2. Ground Waves (travel near the earth) • Surface Wave (travel along surface of ground) • Space Wave ( follows 2 paths from transmitting to receiving antennas/one through air directly/other reflected from ground |
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Characteristics of sound
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1. Pitch (frequency/rate of wave)
2. Intensity (amplitude of wave) 3. Quality (depends on form of wave) |
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Navy Oceanography Portal (NOP)
(6) |
1. Earth Orientation Products
2. GPS Products 3. VLBI Products (very Long Baseline Interferometry) 4. Astronomy Products 5. Oceanography 6. Ice |
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Earth Orientation products
(5) |
1. Polar motion
2. UT1 or (mean Solar Time at Royal Observatory, Greenwich) 3. UTC (coordinated Universal Time / atomic clock) GMT /Zulu 4. Celestial Pole offsets (earth pole are not stationary) 5. Delta-T (change in time due to slowing of earth rotation) |
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Funnel Clouds
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Develop during thunder storm. It is a column of swirling air. When rotating winds become strong enough, it touches the ground. It is divided into:
1. Tornado (if it touches the land) 2. Waterspout (if it is over a body of water) |
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METOC Satellites
(5) |
1. Geostationary Operational Environmental Satellites (GOES)/weather forecasting/GOES11&12
2. Polar Operational Environmental satellites (POES)/orbits N to S & provide enough coverage/every region is orbited 4 times 3. Defense Satellite Meteorological Program (DSMP) / Milt. Ops 4. National Polar Orbiting Op. Env. Sate. System (NPOESS)/ for future use 5. Tropical Rainfall Measuring Mission (TRMM) research between NASA & Japan (NASDA)/ water cycle in atmosphere & heat Release. |
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Tropical Cyclone
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Storm characterized by large low pressure center, thunderstorm that produces strong winds & heavy rain.
1. Tropical Depression (low pressure center/ winds less than 38 miles per hour) 2. Tropical storm (winds of 34-63 miles per hour) 3. Hurricane, Cyclone, Typhon (wind storm of at least 74 m/h/ have an eye which is an area with calm winds & free of clouds. • Hurricane (Atlantic/Eastern Pacific) • Typhoons (West Pacific & Asia) • Cyclone (Indian Ocean & Australia) |
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Breaker Type
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The breaking of water (wave)
1. Spilling (wave break very gradually) 2. Plunging (violently breaking waves) 3. Surging (keep going on the beach) |
