Term
| Link 16 provides significant improvements such as: |
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Definition
| jam resistance, improved security, increased data rate, and increased throughput |
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Term
| The _____ is the terminal installed in fighters and attack aircraft |
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Definition
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Term
| ______ is the primary tactical data link for C2I |
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Definition
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Term
| The acronym JTIDS refers to the _____ component of TDL-J and it encompasses the _______ |
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Definition
Comm;
Terminal software
hardware
RF equip
high-capacity, secure, anti-jam waveform |
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Term
| Link 16 is the ______ designation for TDL-J |
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Definition
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Term
| _____ is the protocol used by JTIDS/MIDS terminals |
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Definition
| TDMA (Time division multiple access |
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Term
| Every 24 hr day is divided into ______ epochs |
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Definition
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Term
| An _____ is the largest time unit and is ____ minutes long |
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Definition
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Term
| An epoch is further divided into ____ frames |
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Definition
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Term
How long is a frame?
How many timeslots is it broken down into?
How long is a timeslot? |
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Definition
12 seconds
1536 timeslots
7.8125 ms |
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Term
| How many frequencies does Link 16 hop through? The frequencies are ______ selected based on the ___. Link 16 hops over ______ times a second |
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Definition
51;
pseudo-randomly, time, crypto and net number;
77,000 |
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Term
| _____ is the delay or variable wait time in which no pulses are transmitted |
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Definition
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Term
| What is significant about jitter? |
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Definition
| Pseudo-random amount of jitter makes it very hard to jam. |
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Term
| Jitter is followed by _____ which precedes all data. It is used by the receiver to recognize and synchronize with the signale |
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Definition
| synchronization and message header |
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Term
| The pulses between the synchronization and message header and the propogation is where the _____ is carried |
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Definition
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Term
| ____ is the end of the timeslot which determines the maximum range of the point to point connectivity |
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Definition
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Term
| The propogation guard time allows for a normal range of ____ or an extended range of ____. |
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Definition
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Term
| Link 16 is encrypted twice. It is encrypted using ____ prior to transmission. It is then encoded with a unique ______ variable |
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Definition
MSEC (message security)
TSEC (transmission security) |
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Term
| _____ is the ability of a communications system to operate in a hostile electromagnetic, or jamming environment |
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Definition
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Term
| _____ is the set of mathematical processes used to provide a means of detecting detecting and correcting errors found in data bits |
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Definition
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Term
| With EDAC, 15 bits of data are added with an additional __ bits of data thus producing ___ bits of data. If only ___ bits of data are received, then the whole transmission can be reconstructed to 100% data accuracty |
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Definition
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Term
Frequency Hopping
___ different freqs are used. They are spaced ___ MHz from each other. The frequency hops ____ times a second. |
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Definition
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Term
| The closest thing Link 16 has to a node is a ____. What is significant about this? |
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Definition
| NTR (net time reference); it is needed to start the link but can leave the network and the network will continue to operate for a while. |
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Term
| _____ are the building blocks of a JTIDS network. |
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Definition
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Term
| In JTIDS, a _____ is defined as all participants on a single hopping pattern. Participants transmit their data ______. |
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Definition
| single net; one at a time |
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Term
| The JTIDS network allows for ____ nets. Only ___ nets can operate in overlapping geographic areas before interference between the freq hopping patterns will occur. |
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Definition
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Term
| Mutually exclusive groups performing different functions (NPGs) using the same time slots (but with different hopping patterns). Not an operator selectable feature. Decision to use made during the initial network design build |
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Definition
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Term
| units perform the same function using the same time slots but with different hopping patterns. |
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Definition
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Term
| There are ____ operator selectable stacked nets` |
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Definition
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Term
| JTIDS ises track quality values ranging from ______. ____ is the best and it means that it is better than a 50 foot accuracy. |
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Definition
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Term
| The highest TDL-A/B Track quality is ___, with a positional accuracy of ____. |
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Definition
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Term
| Only the ____ will have a track quality of 15. All other players will have a quality at least one below. |
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Definition
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Term
| If a unit is outside the of line of sight with the NTR, they can enter the network with an ______. |
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Definition
| IEJU (initial entry JTIDS unit) |
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Term
| The purpose of ______ is to overcome the line of sight limitations of JTIDS and MIDS radio terminals and extend coverage of data links through the use of long haul media |
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Definition
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Term
| The ____ transmits J-series messages |
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Definition
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Term
| The ____ is a routing and data forwarding system that interfaces with all major tactical data links |
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Definition
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Term
| ______ exists when two or more units are reporting the same aircraft with more than one piece of symbology |
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Definition
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Term
| ______ exists when two or more units attempt to use the same track number for different aircraft. |
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Definition
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Term
| ____ is the most important element of information on the link. It is imperative that all _____ are resolved as soon as possible |
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Definition
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