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RADIO AIDS RECAP > PRIMARY RADAR > Flashcards

PRIMARY RADAR Flashcards

1
Q

CENTIMETRIC BAND

A

SHF

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2
Q

Continuous wave radar used in?

A

Radio Alt and Doppler

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3
Q

Power Required to double the range of Radar

A

`16 times

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4
Q

RADAR BAND?

A

SHF

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5
Q

Radar energy released in intervals?

A

PRF Pulse repition frequncy

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6
Q

Purpose Magnetron

A

Produce HighPower at High Freq

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7
Q

Modulator Purpose

A

Rapid on/opff

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8
Q

Synchroniser?

A

Regulates Pulse Rate

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9
Q

Wave guide

A

Channels Energey in one direction

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10
Q

Advantages of Narrow beam

A

Bearings easier
Concentrated Energy
Range
Target Definition

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11
Q

Best Picture

A

Short Pulse Length with Narrow Beam

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12
Q

Advantage of slotted antenna

A

Virtually Eliminate Side Lobes

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13
Q

How is maximum unambiguous range determined? Why?

A

Pulse Repetition Frequency + Pulse Interval

Pulse has to return before the next one can be sent

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14
Q

MAX PRF FORMULA

A

MAX PRF = 80000nm/NM

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15
Q

The number of pulse per Second is?

A

The Pulse Repetition Frequency

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16
Q

MAX RANGE

A

PRF = C/2x Range (KM)

17
Q

MAx and min range determined by?

A

Maximum Range determined by PRF = c / 2 prf. Minimum Range determined by Pulse Length = c x pulse length/2

RADIO AIDS RECAP (16 decks)

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