Objective Questions on Tracking Radars

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Objective Questions on Tracking Radars

Objective Questions on Tracking Radars, MCQ on Tracking Radars, Multiple Choice Question on Tracking Radars, Tracking Radars MCQ.

Multiple Choice Questions

In the following scan radar, the direction of the antenna beam does not coincide with the bore-sight, but revolves around, it seeking the target direction.

  • lobe switching (or sequential lobing)
  • monopulse
  • conical scan
  • none of the above

Answer: monopulse

Identify the radar where the antenna lobe can assume four different positions around the bore-sight.

  • lobe switching (or sequential lobing)
  • monopulse
  • conical scan
  • none of the above

Answer: lobe switching (or sequential lobing)

The following technique keeps the beam pointed at the target to improve angle accuracy and it is based on the principle that the radar receiver will get maximum returned signal strength.

  • lobe switching (or sequential lobing)
  • monopulse
  • conical scan
  • none of the above

Answer: monopulse

The tracking technique that derives angle error information on the basis of a single pulse is known as

  • lobe switching (or sequential lobing)
  • monopulse
  • conical scan
  • none of the above

Answer: monopulse

The following radar requires a separate receiver for each channel, and it improves the performance of the conical scan and sequential lobing whose performance degrades with time-varying radar returns.

  • Pulse radar
  • monopulse
  • MTI
  • none of the above

Answer: monopulse

Which radarscope plots target echo amplitude versus range on rectangular coordinates for some fixed direction? It is also used primarily for tracking radar applications than for surveillance radars.

  • PPI scope
  • B scope
  • A scope
  • none of the above

Answer: A scope

The most common type of CRT display that maps the location of the target in azimuth and range in polar coordinates is

  • PPI scope
  • B scope
  • A scope
  • none of the above

Answer: PPI scope

A surveillance radar that develops tracks on the targets it has detected is called a

  • tracking radar
  • scanning radar
  • track-while-scan radar
  • none of the above

Answer: track-while-scan radar

The process of changing the radar frequency from pulse to pulse is known as

  • frequency agility
  • blind speed
  • target velocity
  • none of the above

Answer: frequency agility

Range estimation accuracy improves with

  • decreasing bandwidth
  • increasing bandwidth
  • constant bandwidth
  • none of the above

Answer: increasing bandwidth

The radar that uses more than one beam simultaneously to measure the angular position of the target on a single pulse is

  • lobe switching
  • sequential lobing
  • conical scan
  • monopulse

Answer: monopulse

The PPI scan-type indicator can indicate

  • range of the target only
  • the direction of the target
  • Both the above
  • None

Answer: Both the above

Doppler effect is used in

  • MTI
  • CW
  • FM
  • all of the above

Answer: all of the above

The A scope displays

  • the target position and range
  • the target range, but not position
  • the target position, but not range
  • neither range nor position, but not only velocity

Answer: the target range, but not position

If the target cross section is changing, the best system for accurate tracking is

  • lobe switching
  • sequential lobing
  • conical scanning
  • monopulse

Answer: monopulse

After a target has been acquired, the best scanning system for tracking is

  • nodding
  • spiral
  • conical
  • helical

Answer: conical

If a return echo arrives after the allocated pulse interval,

  • it will interfere with the operation of the transmitter
  • the receiver might be overloaded
  • it will not be received
  • the target will appear closer than it really is

Answer: the target will appear closer than it really is

A high PRF will (indicate the false statement)

  • make the returned echoes easier to distinguish from noise
  • make target tracking easier with conical scanning
  • increase the maximum range
  • have no effect on the range resolution

Answer: increase the maximum range

The IF bandwidth of a radar receiver is inversely proportional to the

  • pulse width
  • pulse repetition frequency
  • pulse interval
  • square root of the peak transmitted power

Answer: pulse width

MCQs on MTI, Pulse Doppler Radars

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