Doppler Shift
Estimate one-way RF Doppler shift for spacecraft, satellite, and aircraft links at speeds small compared with light speed. Positive closing velocity raises the received carrier.
Frequency shift
3.648 kHz
3,647.52 Hz
Received frequency
145.803648 MHz
Closing link
Fractional shift
25.017 ppm
beta 2.502e-5
Carrier wavelength
2.0562 m
145.800000 MHz
Pass geometry
Closing at 7.50 km/s
3.648 kHz
145.803648 MHz
blue shift
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
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