6A Flashcards

1
Q

___ ___ is the result of successfully connecting two or more satellite terminals where data or voice orderwire are passed over a satellite channel without significant degradation.

A

Link establishment

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2
Q

This is the first step in establishing a link.

A

Satellite tracking

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3
Q

In order to move on to transmitting and receiving frequencies we need to make sure that we are aimed at our assigned satellite. There are a number of tracking principles that can be utilized by antennas, but what’s important is that we are peaked on the ___ ___.

A

satellite’s downlink

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4
Q

The most efficient way to ensure we are peaked on a satellite’s downlink is to lock onto the satellite’s ___.

A

beacon

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5
Q

One purpose of a ___ is to serve as a basic identification mark to let you know you are on the correct satellite.

A

beacon

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6
Q

Once you have moved your antenna in azimuth and elevation to find the satellite, you can verify that you are on the right satellite by using the ___ and a ___.

A

beacon
spectrum analyzer

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7
Q

Once the beacon is found, many systems have ___ ___ ___ to lock onto the satellite’s beacon.

A

automatic tracking systems

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8
Q

A ___ uplink and downlink happens once we are peaked onto the satellite’s location.

A

nominal

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9
Q

This is where we can successfully acquire a communications channel using transmit and receive principles without error.

A

Nominal Uplink and Downlink

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10
Q

___ is the transmit signal we are sending from our terminal.

A

Uplink

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11
Q

___ is what we are receiving from the satellite

A

Downlink

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12
Q

In order to ensure that our uplink and downlink is ideal, ___ ___ must take place.

A

power balancing

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13
Q

This takes place following a successful communications link that is established over a
satellite connection.

A

Positive Control

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14
Q

Positive control takes place following a successful communications link that is established over a satellite connection. Actions that take place during this phase of link establishment are required link status reporting and…?

A

Authorized Service Interruptions (ASIs)

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15
Q

ASIs are ___ link outages that are either performed by the STEP site or at the user’s terminal.

A

scheduled

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16
Q

The ___ ___ ___ ensure each terminal is operating according to the SAA.

A

satellite network controllers

17
Q

The satellite network controllers are closely supervised by the technical control of the ___ ___ ___, who must approve actions taken by the satellite network controllers affecting mission satellite deviation from the SAAs.

A

Sierra Nevada Corporation

18
Q

When reporting link status, you might provide details to the satellite controller to verify SAA accuracy. These details include:

A

mission number
total output power
current Coordinated Univeral Time (UTC)