WorksheetsMinimum Detectable Signal Quiz
Total questions: 15
Worksheet time: 13mins
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
Dmin
Mmin
Smin
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
During a science project, Viaan is analyzing the video output of a radar receiver, which is plotted between amplitude versus time. This output is displayed on ______
A-scope
E-scope
PPI
F-scope
In the figure, which point (A, B, or C) has the strongest signal strength?
A
B
C
All have the same strength
Radar frequency is usually measured in which unit?
Hertz (Hz)
Decibels (dB)
Watts (W)
Meters (m)
What is the approximate frequency range of an X-band radar?
1 - 2 GHz
3 - 4 GHz
8 - 12 GHz
20 - 40 GHz
What is the relationship between radar frequency and the ability to detect small targets?
Higher frequency radars detect smaller targets better
Lower frequency radars detect smaller targets better
Frequency does not affect target detection
Only pulse width determines target detection
