# RF Wireless World

## Home of RF and Wireless Vendors and Resources

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## Doppler Frequency Calculator-Moving Reflector, Moving Transmitter

This page covers Doppler Frequency calculator based on doppler frequency equation. It mentions doppler frequency calculator for moving reflector and moving transmitter cases. The doppler frequency calculator mentions equations for both these cases viz. moving reflector and moving transmitter.

### Doppler Frequency Calculator#1 : Moving Reflector case

Speed of wave source (m/sec) input1 :

Operating Frequency (MHz) input2 :

Doppler Frequency output (Hz) :

EXAMPLE#1 (Doppler frequency calculation for moving reflector case):
Speed of Wave source (m/sec) = 1000 ,
Operating Frequency (MHz) = 3000(i.e. 3GHz),
Output Doppler Frequency (Hz) = 20000 i.e. 20KHz

### doppler frequency formula or equation for moving reflector

Following doppler frequency formula is used to calculate doppler frequency when reflector or target is moving. The doppler frequency calculator#1 uses following equation-1. ### Doppler Frequency Calculator#2 : Moving Transmitter case

Speed of wave source (m/sec) input1 :

Operating Frequency (MHz) input2 :

Doppler Frequency output (Hz) :

EXAMPLE#2 (Doppler frequency calculation for moving transmitter case):
Speed of Wave source (m/sec) = 1000 ,
Operating Frequency (MHz) = 3000(i.e. 3GHz),
Output Doppler Frequency (Hz) = 10000 i.e. 10KHz

### doppler frequency formula or equation for moving transmitter

Following doppler frequency formula is used to calculate doppler frequency when transmitter is moving. The doppler frequency calculator#2 uses following equation-2. ### Useful converters and calculators

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