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46 Cards in this Set
- Front
- Back
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1) what is the function of components in the E2E comms path |
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RF comms include |
Transit links and RF circuits |
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Components function in the network architect |
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Describe GCCS-M |
Global Command + Control System -Maritime Used by commanders for command and control. Single integrated system recievers, processes, displays and maintains Global positioning system for forces. |
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Describe TBMCS |
Theater Battle Management Core Systems - real time/ naval leadership uses to make critical, strategic, tactical decisions regarding placement and movement of ARIEL forces Rate: OS |
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Describe JSIPS |
Joint service image processing system- A shipboard digital imagery system (secret) Rate: IS |
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Describe NITES |
Naval integrated tactile environment subsystem- A set of meteorological + oceanography forecast tools Rate: AG |
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Task performed by onshore facilities |
Provide class and unclass voice/msg/data/ video Support the fleet Provide network connectivity for platforms afloat Provide relay services |
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Capability of satcom: |
UHF/SHF/EHF (LDR/MDR) capable of multiplexing Comms that include the use of an active or passive satellite to extend the range of comms: can be mil or commercial owned. |
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Capability of LOS |
VHF/UHF approx 30 miles Short range comms between platforms with in each other's direct LOS |
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Capability of long range |
ELF/VLF/LF/HF Beyond line of sight (over the horizon) |
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Capability of pier connectivety |
1.544 mbps - T1 24/7 voice/video/data A physical connection between a ship + shore |
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Define propagation |
The way the wave moves |
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Define velocity |
How fast the wave moves (speed) |
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Define cycle |
One complete occurrence of a wave |
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Define wave length |
Distance covered by a point on the wave to that same point in the next cycle Short= higher freq / long = lower freq |
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Define freq |
# of cycles in one second (hertz) |
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Define reflection |
Occured when radio waves are bounced from a flat surface( earth, metalic, ionosphere) |
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Describe refraction |
A change in the waves direction or bend during propogation (Temp/pressure/humidity/density) |
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Describe Defraction |
Bending around a dense object. When RF waves hit a very solid or dense object during propogation. The waves change direction as they bend around the object |
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Define sync transmission |
Transmitted at a rate determined by an associated (atomic) clock |
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Define asynch transmission |
Transmitted w/o a clock usually during low speeds. It is sent with start and stop bits |
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Define ISOC transmission |
Has niether a clock or s/s bits. This uses over shaming to ensure that the proper data bits are recieved Used in multimedia streams |
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Define digital signals |
Digital data is bytes in 1s and 0s |
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Analog signal |
Time varying, continuous like voltage |
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Intermediate signal |
A modified signal to adjust the original signal higher/lower between the baseband and carrier signal |
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QAM |
Quadrature AMP Mod Combines two am signals into a single channel |
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Amp |
Size of a signal (strength) |
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Freq |
# of cycles per second (hertz) |
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Phase |
Fraction of time a signal requires to complete a full cycle |
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Transciever |
Transmitted and recieves (still half duplex) |
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Transmitter |
Transmits a signal/data |
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Reciever |
Recieves a signal or data |
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4 types of satellite |
Geo- geographic synch orbit Mio - medium synch orbit Leo - low synch orbit Hio- molynia asynch |
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Describe SAA |
An upper case 2-3 page naval msg sent to the ship/shore (earth station ) by RSSC/GSSC Determines satellite availability. |
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Describe comms status board |
Documents the circuits, equipment, and frequencies used to provide RF comms to/from the ship Includes: Status of the comms/freq/ equip status For safety and for reliable comms |
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Describe optask comms |
A document that directs and coordinates comms planning for these and battle groups in an AOR Includes Circuit names/freq/ emission desg/ crypto keynotes |
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Describe the commplan |
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Who sends the 2301z |
Nctams |
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Describe a 2301z |
A daily comms status msgs |
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Purpose of the freq plan |
Provides frequency plans for your ships optask Circuit work, keying materials comms |
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Purpose of the CIB |
Comms info board- accurate procedurall or reference info Sent out by NCTAMS as needed |
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Purpose of des radio emissions |
Emission designators classify each type of radio emissions according to the character of the radio signals These are codes that specify the range and use of a particular Freq in navy Comms ( a voice transmission) |
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Process to submit a SAR |
Operator-> commo -> numbered FLTCMD to RSSC/GSSC -> sat controllers process SAR |
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Purpose of the SAA |
Determines satellite availability and formally auths access |
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Purpose of SAR |
To request access authorized for the satellites and crews needed during ops |
