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The target cross section is changing, the best system for accurate tracking is
  • a)
    Monopulse
  • b)
    Conical scanning
  • c)
    Sequential locking
  • d)
    Lobe switching
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The target cross section is changing, the best system for accurate tra...
  • In monopulse antenna the simultaneously two or more lobes of antenna are used to track a target hence give better tracking than other methods.
  • Monopulse radar is a radar system that uses additional encoding of the radio signal to provide accurate directional information.
  • The name refers to its ability to extract range and direction from a single signal pulse.
  • Monopulse radar avoids problems seen in conical scanning radar systems, which can be confused by rapid changes in signal strength.
  • This system also makes jamming more difficult.
  • Most radars designed since the 1960s are monopulse systems.
  • The monopulse method is also used in passive systems, such as electronic support measures and radio astronomy.
  • Monopulse radar systems can be constructed with reflector antennas, lens antennas or array antennas.
  • Historically, monopulse systems have been classified as either phase-comparison monopulse or amplitude monopulse. This is because some common implementions have been based on a phase comparison or an amplitude comparison.
  • Modern systems determine the direction from the monopulse ratio, which contain both amplitude and phase information.
  • The monopulse method does not require that the measured signals are pulsed. 
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Community Answer
The target cross section is changing, the best system for accurate tra...
Monopulse Tracking System
Monopulse tracking is the best system for accurate tracking when the target cross section is changing. This system provides precise tracking by comparing the received signals from different parts of the antenna pattern.

Explanation:

Monopulse Tracking Principle:
- Monopulse tracking compares the phase differences between the received signals from multiple feed horns or elements on the antenna to determine the direction of the target.
- By analyzing the phase differences, the system can accurately track the target even when its cross section is changing.

Advantages of Monopulse Tracking:
- Monopulse tracking provides high accuracy and resolution in tracking moving targets.
- It compensates for errors caused by target maneuvers and changing cross sections.
- It offers better performance in cluttered environments compared to other tracking systems.

Comparison with Other Tracking Systems:
- Conical scanning tracks targets by rotating the antenna in a cone pattern, which may not be as accurate when the target cross section is changing rapidly.
- Sequential locking tracks targets by sequentially locking onto different parts of the target signal, which may lose accuracy if the target changes rapidly.
- Lobe switching tracks targets by switching between lobes of the antenna pattern, which may not provide as precise tracking as monopulse in dynamic situations.
In conclusion, monopulse tracking is the best system for accurate tracking when the target cross section is changing due to its high accuracy, resolution, and ability to compensate for target variations.
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