uhf tacsat /dama multi-service tactics, techniques ... - UHF-Satcom.com
uhf tacsat /dama multi-service tactics, techniques ... - UHF-Satcom.com uhf tacsat /dama multi-service tactics, techniques ... - UHF-Satcom.com
equesting party The address of the I/O port initiating a call. return channel control orderwire A TDMA slot used by the terminals to (1) request, from the channel controller, access to the waveform; (2) respond to channel controller requests with information such as status and configuration; and (3) transfer computer data to other terminals. return orderwire The OW used to transmit control and status information from network terminals to the channel controller and perform system support functions, including ranging. satellite A body that revolves around a larger body. satellite footprint The area of the earth's surface from which terminals are able to access a particular satellite. segment A portion of a frame allocated to users for communicating. The segment is further divided into time periods called timeslots. service A specified set of information-transfer capabilities provided to a group of users by the DAMA system. shaped binary phase-shift keying shaped offset quadrature phaseshift keying A form of BPSK modified to produce the phase-shift over a period of time. For example, in 50 percent shaped binary phase-shift keying, the phase-shift occurs over a period of time equal to one-half a bit period. A form of offset quadrature phase-shift keying modified to produce phase-shift over a period of time. For example, in 50-percent shaped offset quadrature phase-shift keying, the phase-shift occurs over a period of time equal to one-half a bit period. slant range The one-way distance between a satellite and a terminal within the satellite's footprint. (Because signal propagation velocity is constant, terminals measure range in units of time.) slave channel A DAMA channel (5- or 25-kHz) used only for user communications and not for reception or transmission of OW or system support messages. Channel timing is derived from synchronization with the CCOW on the control channel. slot connect A connection between a terminal's I/O port(s) and a communications slot in a TDMA frame. slot number A 5-bit code that identifies a time-slot when operating in the AC mode. solar flare An explosive release, marked by a sudden brightening near a sunspot or prominence, of electromagnetic radiation and huge quantities of charged particles from a small area of the solar surface. solar wind A stream of particles accelerated by the heat of the solar corona (outer region of the sun) to velocities great enough to Glossary-21
permit them to escape from the Sun’s gravitational field. source terminal The terminal from which information is considered to originate. space weather The conditions and processes occurring in space that have the potential to affect the near Earth environment. Space Weather processes can include changes in the interplanetary magnetic field, coronal mass ejections from the sun, and disturbances in the Earth’s magnetic field. The effects can range from damage to satellites to disruption of power grids on Earth. special frame format Glossary-22 A frame format in which one or more of a terminal's subformats may differ from the frame format indicated in the master frame. spectrum The range of electromagnetic radio frequencies used in transmission of voice, data and television. spot beam A focused antenna pattern sent to a limited geographical area. Spot beams are used by domestic satellites to deliver certain transponder signals to geographically well-defined areas such as Hawaii, Alaska, and Puerto Rico. spread spectrum The transmission of a signal using a much wider bandwidth and power than would normally be required. Spread spectrum also involves the use of narrower signals that are frequency-hopped through various parts of the transponder. Both techniques produce low levels of interference between the users. They also provide security in that the signals appear as though they were random noise to unauthorized earth stations. subformat See frame subformat. subnet A group of terminals with a need for common communications that share a common address. symbols per second The unit of measure of the modulation rate. The modulation rate in symbols per second is calculated by dividing the bit rate, after forward error correction, by the number of bits per symbol. synchronization A deliberate attempt to determine what aspects of unit processes are hindering the flow of information and order; figuring out the bottlenecks and then coming up with better ways. system support slots Those portions of a control channel allocated for terminals to perform link test and ranging operations. teardown Termination of an established communication. telemetry Radio signals from a spacecraft used to encode and transmit data to a ground station. telemetry, tracking, and Telemetry, Tracking, and Control refers to the brain of a satellite and its operating system. Telemetry, Tracking, and
- Page 133 and 134: E-2 d. Programming operating modes.
- Page 135 and 136: (12) After pushing the variable pos
- Page 137 and 138: d. radio. Prior to COLD START, pres
- Page 139 and 140: aa. INTKG should flash. Leave as is
- Page 141 and 142: 1. Skyfire Operator Training Append
- Page 143 and 144: The following message appears- F-2
- Page 145 and 146: F-4 CI MENU LOAD PRESETS LOADING PR
- Page 147 and 148: STEP 2. Rotate selector control kno
- Page 149 and 150: (1) On = Activates guard receiver.
- Page 151 and 152: 1. Setting Up for DAMA Appendix G A
- Page 153 and 154: (1) Enter *92 then depress the Ente
- Page 155 and 156: Appendix H EMI CHARACTERIZATION CHE
- Page 157 and 158: Appendix J CUT SHEETS The following
- Page 159 and 160: DAMA Database Set up Presets Mode P
- Page 161 and 162: Appendix K Prioritization Scheme Ta
- Page 163 and 164: References Joint CJCSM 3122.01, Joi
- Page 165 and 166: COCOM combatant command COMM commer
- Page 167 and 168: IO Indian Ocean IP internet protoco
- Page 169 and 170: P PAC Pacific PCC primary channel c
- Page 171 and 172: USARPAC United States Army, Pacific
- Page 173 and 174: attitude can be measured by the ang
- Page 175 and 176: channel control orderwire channel c
- Page 177 and 178: participate in a class broadcast fr
- Page 179 and 180: data stream into burst-formatted da
- Page 181 and 182: low power satellite A satellite wit
- Page 183: preamble Consists of a carrier segm
- Page 187 and 188: waveform The combination of baseban
- Page 189 and 190: COMSEC custodians, III-7 connection
- Page 191 and 192: DAMA, I-7, III-6, C-20 point-to-poi
- Page 193 and 194: data, I-24 data rate, I-24 disadvan
- Page 195: MARINE CORPS: PCN 144 00003 80 PIN:
permit them to escape from the Sun’s gravitational field.<br />
source terminal The terminal from which information is considered to<br />
originate.<br />
space weather The conditions and processes occurring in space that have<br />
the potential to affect the near Earth environment. Space<br />
Weather processes can include changes in the<br />
interplanetary magnetic field, coronal mass ejections from<br />
the sun, and disturbances in the Earth’s magnetic field. The<br />
effects can range from <strong>dama</strong>ge to satellites to disruption of<br />
power grids on Earth.<br />
special frame<br />
format<br />
Glossary-22<br />
A frame format in which one or more of a terminal's<br />
subformats may differ from the frame format indicated in<br />
the master frame.<br />
spectrum The range of electromagnetic radio frequencies used in<br />
transmission of voice, data and television.<br />
spot beam A focused antenna pattern sent to a limited geographical<br />
area. Spot beams are used by domestic satellites to deliver<br />
certain transponder signals to geographically well-defined<br />
areas such as Hawaii, Alaska, and Puerto Rico.<br />
spread spectrum The transmission of a signal using a much wider bandwidth<br />
and power than would normally be required. Spread<br />
spectrum also involves the use of narrower signals that are<br />
frequency-hopped through various parts of the transponder.<br />
Both <strong>techniques</strong> produce low levels of interference between<br />
the users. They also provide security in that the signals<br />
appear as though they were random noise to unauthorized<br />
earth stations.<br />
subformat See frame subformat.<br />
subnet A group of terminals with a need for <strong>com</strong>mon<br />
<strong>com</strong>munications that share a <strong>com</strong>mon address.<br />
symbols per second The unit of measure of the modulation rate. The modulation<br />
rate in symbols per second is calculated by dividing the bit<br />
rate, after forward error correction, by the number of bits<br />
per symbol.<br />
synchronization A deliberate attempt to determine what aspects of unit<br />
processes are hindering the flow of information and order;<br />
figuring out the bottlenecks and then <strong>com</strong>ing up with better<br />
ways.<br />
system support<br />
slots<br />
Those portions of a control channel allocated for terminals to<br />
perform link test and ranging operations.<br />
teardown Termination of an established <strong>com</strong>munication.<br />
telemetry Radio signals from a spacecraft used to encode and transmit<br />
data to a ground station.<br />
telemetry,<br />
tracking, and<br />
Telemetry, Tracking, and Control refers to the brain of a<br />
satellite and its operating system. Telemetry, Tracking, and
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