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1C5 5 Study > CDC Vol 1, 008 Types of Radar > Flashcards

CDC Vol 1, 008 Types of Radar Flashcards

1
Q
  • What is a pulse Doppler radar?
A

It is similar to modulated pulse radar; however, its receiver detects a shift or change of frequency of the received signal (Doppler shift) to distinguish between moving and stationary targets.

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2
Q
  • How are airborne radars able to distinguish targets from ground returns?
A

By making use of the Doppler shift which is produced by moving targets. Stationary targets will not produce such a shift.

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3
Q
  • How does phased-array radar move the radar beam?
A

By electronically steering the beam. The beam can be swept across the antennas both horizontally and vertically.

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4
Q

Name they types of radar covred in the CDCs?

A
  • Circular Scan
  • Pulse Doppler Radar
  • Phased Array
  • Planar Array
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5
Q

What type of radar gives you the azimuth and range of the target relative to the antenna position?

A

Circular Scan Radar

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6
Q

What of radar uses the doppler shift to detect the range of a target?

A

Pulse Doppler Radar

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7
Q

What type of radar generates a fan beam having a large angle in the vertical direction, but a small angle in the horizontal direction?

A

Circular Scan Radar

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8
Q

What type of radar has a receiver that detects a shift or change of frequency of the received signal (Doppler shift) to distinguish between moving and stationary targets?

A

Pulse Doppler Radar

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9
Q

With a pulse doppler radar and the doppler shift, will a frequency be higher or lower if an aircraft is moving:

  • Moving away from the radar?
  • Moving towards the radar?
A
  • Away is lower freq

- Towards is a faster freq

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10
Q

What is the diffirents between a modulated pulse radar and a pulse doppler radar?

A
  • Modulated Pulse Radar detects range by detecting the shift or change in a frequency.
  • Pulse Doppler Radar determines range by detecting the shift or change in a frequency.
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11
Q

What is the difference between the doppler effect and doppler shift?

A
  • Doppler effect includes stationary targets

- Doppler shift is only for moving targets

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12
Q

What antenna has many small antennas or slotted waveguides positioned on the face or side of a large, wedge-shape structure?

A

The Phased-array antenna

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13
Q

What type of antenna is the dipole the primary element?

A

Phased Array Antenna

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14
Q

Whar are the basic elements of the CRC?

A
  • TPS -75
  • OM
  • MCE
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15
Q

What type of radar/sensor is TPS-75

A

Phased Array Antenna

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16
Q

What type of antenna uses electronic phasing to develop the desired beam pattern?

A

Planar Array

17
Q

How is a phased array antenna placed in azimuth and placed horizontally?

A
  • Machanically placed in azimuth

- Electronicly placed horizontally

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