Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Next Up > M2 B3 > Flashcards

M2 B3 Flashcards

1
Q

Which of the following is not one of the three distinct elements that work together to make satellite communication (SATCOM) possible?

A

Payload segment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

which of the following is not a function of the (satellite communication) SATCOM control segment?

A

Ground control

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which term describes the longest distance across an elliptical orbit?

A

Major axis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the inclination angle of a polar orbit?

A

90*

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which are the two types of communications satellites?

A

Active and passive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which satellite reflects signals transmitted toward it?

A

Passive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which of the following satellite look angle methods is provided by (satellite communication SATCOM planners?

A

Satellite access authorization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which satellite access technique is being used when all channels are pooled and used by any station according to its instantaneous traffic load?

A

Demand assigned multiple access (DAMA).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Conflicts regarding Defense Satellite Communications System (DSCS) ground mobile forces

A

Joint Staff

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

One of the functions of the telecommunication certification office is to

A

ensure the user agency is prepared to pay for the service

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Telecommunications service orders are issued by the

A

Defense Information Systems Agency (DISA).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Astronomical time is based on

A

the apparent motion of the sun in the sky

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What time scale gives us a universally agreed to standard time scale with the stability and accuracy of atomic time and synchronous operation with the earth’s motion about the sun we can depend on?

A

Coordinated universal time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What two factors cause a quartz oscillator’s resonant frequency to drift?

A

Temperature and aging

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The operation of the atomic clock is based on the phenomenon that

A

atoms release energy at a particular resonant frequency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

To determine the number of hours coordinated universal time (UTC) differs from your local time, you must determine the number of time zones between your location and the location of the zero

A

meridian

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Coordinated universal time (UTC) is based on what kind of clock system?

A

24-hour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

A number of organizations can maintain accurate time-of-day clocks by referencing a standard time interval of one

A

second

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The agency responsible for coordinated universal time (UTC) is the

A

International Bureau of Weights and Measures (BIPM)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is multiplexing?

A

Combining multiple information channels onto a common transmission medium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What specifically does wavelength division multiplexing assign each incoming optical signal?

A

Frequency of light

22
Q

Which multiplexing division technique samples each low speed channel in sequence to interleave bits or characters and then transmit them at high speed?

A

Time

23
Q

Which of the following relies on the transmitter to send multiple copies of the same message to the distant end using a predetermined algorithm?

A

Forward error correction

24
Q

Which SATCOM system module is used to produce the final transmit frequency?

A

Up converter

25
Q

Which type of power amplifier uses semiconductor transistors designed for microwave and higher frequency RF operation?

A

Solid state

26
Q

Which module is the first step of the receive signal path?

A

Low noise amplifier

27
Q

Which module strips away the intelligence from the Intermediate frequency?

A

Demodulator

28
Q

When establishing a communication link with a satellite the required sequence of events is

A

orbit prediction, antenna pointing, satellite acquisition, and satellite tracking

29
Q

Which tracking method requires no input from a satellite?

A

Programmed track.

30
Q

What signal originating from the satellite do we use to acquire and track the satellite?

A

Beacon

31
Q

Which type of diversity do you have when the same frequency radiates simultaneously in two different planes?

A

Polarization

32
Q

Which type of diversity requires two antennas, two receivers, and two transmitters?

A

Polarization

33
Q

What is the tropo/satellite support radio frequency range?

A

14.4 to 15.25 GHz

34
Q

What are the Air Force Satellite Control Network (AFSCN) command and control nodes?

A

Environmental Satellite Operations Center at Schriever AFB, CO, and National Oceanographic
and Atmospheric Administration (NOAA) Satellite Operations Control Center at Suitland, MD

35
Q

The MARK IVB antennas can be located up to how many feet away from the processing area?

A

1500

36
Q

Which mission is the highest priority of the Defense Support Program (DSP)?

A

North American warning

37
Q

Which set of equipment represents the satellite readout station equipment group?

A

Radio frequency set, transmit/receiver set, and digital equipment set

38
Q

What is the number of Global Positioning System (GPS) orbital planes?

A

6

39
Q

Which military strategic and tactical relay (MILSTAR) capability is very different from previous military satellite communications (MILSATCOM) and commercial satellite communications systems?

A

Crosslinking

40
Q

Which element of the military strategic and tactical relay (MILSTAR) mission allocates communication resources?

A

Planning

41
Q

The military strategic and tactical relay (MILSTAR) satellite sends downlink communications transmissions at

A

ultrahigh frequency (UHF) and super-high frequency (SHF)

42
Q

Which military strategic and tactical relay (MILSTAR) antenna provides high gain, selective coverage of any ground station visible on the earth’s surface within its own footprint?

A

Spot beam

43
Q

Which satellite system provides Global Broadcast Services (GBS)?

A

Ultrahigh frequency (UHF) follow-on

44
Q

How many ultrahigh frequencies (UHF) channel are available for each UHF Follow-on satellite?

A

39

45
Q

When considering the factor of service area for commercial satellite services, which description about Ku-band service is true?

A

Not worldwide, located primarily over land masses and highly populated areas

46
Q

What services are not included in INMARSAT mobile satellite services (MSS)?

A

Iridium

47
Q

Which commercial satellite communication system can offer true pole-to-pole global coverage?

A

Iridium

48
Q

Where is the Inmarsat headquarters located?

A

London, England

49
Q

Which type of communications is not normally provided through commercial wideband services?

A

Handheld satellite phone communications

50
Q

Which satellite company is specifically designed to interface with all current X-band terminals?

A

XTAR

Next Up (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions