IDW 113

Frequency Bands
- ELF 3-30HZ
- SLF 30-300HZ
- ULF 300HZ-3KHZ
- VLF 3-30KHZ
- LF 30-300KHZ
- MF 300KHZ-3MHZ
- HF 3-30MHZ
- VHF 30-300MHZ
- UHF 300MHZ-3GHZ
- SHF 3-30GHZ
- EHF 30-300GHZ
Frequency

Number of cycles that occur in one second
Wavelength

Distance from peak to peak
Refraction

Wave that changes direction
Multiplexing

Simultaneous transmission of two or more signals
Modulation

Encoding information onto a carrier signal for transmission
Modulation Types
- USB - upper side band
- LSB - lower side band
- CW - carrier wave
- AM - amplitude modulation
- FM - frequency modulation
Azimuth Angle

Angle of an object above the horizontal plan between the object and true or relative north
Elevation Angle

Angle between the horizontal plane and the line of sight
Air Search Radar

Search targets in large areas
Surface Search Radar

Used to detect presence of surface craft and low flying aircraft
Fire Control Radar

Provides positional data on targets
Half Duplex
- Shared transmission medium, one at a time
- IE: Walkie Talkies
Duplex
- Allows transmission at the same time
- IE: Phone
Simplex
- Transfer data in a single direction
- IE: TV

Author

edcarli

156165

Card Set

IDW 113

Description

IDW 113

Updated

2012-06-06T00:14:32Z

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