Brainscape's Knowledge GenomeTM

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


See full index

Equipment > EQT 4 SSR > Flashcards

EQT 4 SSR Flashcards

1
Q

What is SSR

A

A system of RADAR using ground interrogators and airborne transponders to determine the position of aircraft in range and azimuth.

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

What frequency does the interrogator transmit on?

A

1030mhz

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

What frequency does the interrogator receive on

A

1090mhz

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

Why do the frequencies for TX and RX have to be different

A

To stop self interrogation

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

What length wavelength is used for SSR

A

30cm

UHF/SHF

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

What is Mode A used for

A

Identification (squawk)

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

What is Mode C used for

A

Vertical position (height)

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

How does an a/c transponder know which type of interrogation

A

The different timings between pulses

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

What code do transponders use to respond

A

Binary

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

How long between mode A pulses

A

8.5 micro seconds

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

How long between mode C pulses

A

21 micro seconds

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

How many info pulses are in a Mode A reply?

A

12 info pulses

4 numbers for squawk (only 0-7 possible due binary)

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

How many possible squawks are there

A

4096

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

What are the 3 types of codes

A

Discrete

Non discrete

Special codes

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

What are the special codes

A

7500
7600
7700

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

What does ORCAM stand for

And who is in charge of it

A

Originating region code assignment method

Eurocontrol

17
Q

How many participating areas is ORCAM divided into

A

5

18
Q

What are the benefits of an ORCAM squawk

A

Reduces RTF and cockpit workload

Squawk can be retained take off until touch down

19
Q

How many blocks of codes to ACCs have and what are they

A

2

Internal and international

20
Q

Mode C reply

How many bits?

What does it give?

A

Give height read out

Uses 11 bits

3 number for height, 8&9 required so 11 bits to fit binary numbers in

21
Q

What is the max uplink capacity

A

23 bits

11 Mode C

12 Mode A

22
Q

What is Garbling

A

False codes display of A/C are so close together their responses to Mode A interrogation overlap

23
Q

What do you use to overcome garbling

A

Degarbler

24
Q

What is FRUIT

A

False response un-synchronised in time

Replies that have not been triggered by the interrogator

25
Q

How do you remove fruit

A

With a defruiter

26
Q

What is mono pulse SSR and why use it

A

Single pulse used. Average measurements made on several or all of the pulses received.

Improves accuracy

Fruiting and garbling minimised

Equipment (12 decks)

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