Answer to Question #158569 in Electrical Engineering for manoj

Question #158569

A highway police radar operating at 10 GHz observes a Doppler shift of 1,500 Hz when the radar is pointed at a moving car. What is the radial speed of the car toward the radar in miles per hour?


1
Expert's answer
2021-02-09T07:06:52-0500

A radar emits waves. The waves reflect from a barrier (the car). Since the car moves, the incident waves reflect with some additional shift, which causes Doppler shift.

45 m/s is 162 km/h.


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