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EW > Formative > Flashcards

Formative Flashcards

1
Q

Charlie

A

500-1000Mhz

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2
Q

Delta

A

1-2 Ghz

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3
Q

India

A

8-10 Ghz

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4
Q

Bravo

A

250- 500 Mhz

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5
Q

Echo

A

2-3 Ghz

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6
Q

The scan of a radar is the ______ of a beam of _______ in a ___________ in order to cover a region of space.

A

Directing
Energy
Set pattern

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7
Q

A decibel is a __________ measure of the _____ between the output and the input of an electrical or acoustical circuit. Symbolised by _________.

A

Logarithmic
Ratio
dB

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8
Q

What are the IFF frequencies:
Interrogator:
Transponder:

A

1030Mhz
1090 Mhz

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9
Q

Four categories of polarisation

A

Linear
Circular
Elliptical
Rotating

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10
Q

Two characteristics of pulse duration determines in a radar:

A

Minimum range
Range resolution

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11
Q

Radar Kilometre is equal to:

A

6.66usecs

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12
Q

MTUR is the ___________ range RADAR can detect an object before range ____________ occur.

A

Maximum
Ambiguities

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13
Q

Two types of stagger pulse modulation?

A

Simplex and complex

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14
Q

Causes of an unintentional jitter Interpulse Modulation

A

Equipment failure in timing circuits
Fluctuations in power supplies

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15
Q

Advantages of intrapulse modulation:

A

EP feature
Reduced peak power requirements
Increased range
Increased range resolution

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16
Q

Range resolution is the ability to discriminate between

A

Un grouped objects at different ranges but on the same bearing

17
Q

Three uses of MTI indicator RADARs

A

1.Eliminate clutter in situations such as busy airports.
2. Detect low flying aircraft among ground clutter such as hills, buildings ect.
3. Detect targets on a battlefield amongst hills and trees.

18
Q

Two advantages of LPI radar

A

Increase range resolution and low probability of detection

19
Q

What is the basic principle of a receiver?

A

Part of a radio system that extracts information from radio frequency energy by the antenna.

20
Q

The scan categories for a RADAR

A

Primary, secondary, passive, combined

EW (1 decks)

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