Doppler Effect Receding Receiver Calculator

I want to calculate
Source Frequency(f0) = Hz
Receiver Velocity(ur) = m/s
Wave Velocity(v) = m/s
New Frequency of Receding Receiver(f') = Hz
 

What is the Doppler Effect Receding Receiver Calculator?

The Doppler Effect Receding Receiver Calculator is a tool used to determine the observed frequency of a wave (such as sound or light) when the receiver (observer) is moving away from a stationary wave source. Unlike a moving source, here the observer's motion affects how frequently they encounter wave crests.

Why use it?

  • To predict how motion affects perceived frequency when the observer moves away from the source.
  • Essential in radar systems, astronomy, medical imaging, and vehicle speed detection.
  • Used in Doppler shift analysis to measure the velocity of objects.

How does it work?

The calculator is based on the Doppler Effect formula for a receding receiver:

Since the receiver is moving away from the source, the numerator decreases, causing a lower observed frequency (lower pitch for sound, redshift for light).

When is it used?

  • When a person walks away from a speaker and notices the pitch decreases.
  • In Doppler radar, when tracking an object moving away.
  • In astronomy, to detect objects moving away from Earth (redshift in light).
  • In ultrasound imaging, to measure blood flow moving away from the sensor.