Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What happens to the frequency when a target moves towards the radar?
💡 Hint: Think about how wavefronts behave when objects come closer.
Question 2
Easy
Define radial velocity.
💡 Hint: Consider it as the component of total velocity in the line of sight.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the Doppler Effect?
- A technique for speeding vehicles
- The change in frequency of a wave due to relative motion
- A method of radar tracking
💡 Hint: Think of how a siren changes pitch as it approaches.
Question 2
True or False: A CW radar can accurately measure both radial velocity and distance to targets.
- True
- False
💡 Hint: Consider what you need to measure distance.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A radar system transmits a signal of frequency 3 GHz and observes a Doppler shift of 1200 Hz from an approaching target. Calculate the radial velocity.
💡 Hint: Use the relationship between speed, frequency, and wavelength carefully.
Question 2
Discuss how using CW radar to detect an object moving at 30 m/s in a tangential direction would yield different data than it does with radial motion.
💡 Hint: Consider alternative methods for measuring movement.
Challenge and get performance evaluation