Minimum Detectable Signal Quiz

1.       Aisha is working on a pulse radar system that has a maximum unambiguous range of 60km. What is the maximum allowable pulse repetition frequency for her radar system?

• 5 x 10⁵ pps

•     2 x 10⁴ pps

   

•    4 x 10⁵ pps

•   2.5 x 10³ pps

Aashi is studying the RADAR Principle in her physics class. She learns that this principle is used in various fields.

      

•   Detection of Aircrafts

•   Telephony

•   Electron microscope

• All of the above

  Aanya is trying to determine whether a specific signal is present at her receiver during a communication experiment. Which of the following is the best possible way for her to confirm the presence of the target signal?

• Setting a threshold at the receiver output

• Increasing the effective aperture of the receiver

• Increasing the resolution of the display

• Operate at long wavelength

During a radar training session, Akhil learned that the unit of minimum detectable signal in the radar range equation is kilowatts.

• True
  

• False

During a science experiment, Myra was testing a new alarm system designed to detect sound signals. However, she noticed that the alarm went off even when no sound was present. Which of the following best describes the term used when a signal is detected falsely even though it’s not present?

• Uncalled echo

• Minimum detectable signal

• False alarm

• Unambiguous signal

During a science experiment, Eesha was trying to detect sound waves using a special device. However, there were instances when the device failed to recognize the sound waves even though they were present. What is the name of the condition in which the target echo is not recognized even if it is present?

• False indication

• Threshold detection

• False alarm

• Missed detection

   In a radar system used by Krish to track aircraft, the maximum radar range equation includes a term for the minimum detectable signal, which is represented by __________

• σ

• D_min

• M_min

• S_min

Which out of the following targets representing signal plus noise can be categorized as valid detection?

• A & B
  

• B & C

• C & A

• Only A

   Eshaan is studying radar technology and comes across the maximum radar range equation. In this equation, σ is called as

      

• Minimum detectable signal

     

• Target cross sectional area

• Gain of antenna

• Maximum detectable signal

What does RADAR stand for?

• Rapid Deployment and Recognition

• Radio Detection and Ranging

• Radar is not an acronym

• Remote Analysis and Display of Aerial Reconnaissance