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JDeng.1
Visitor II
Jan 6, 2020 2:07 PM UTC
Question

S2-LP: Doppler effect due to tranciever moving at a speed 1 m/s

Hi!

In my situation i have two boards with S2-LP (868Mhz): one for transmit data and one for recieve. The reciever is stationary located and doesn't move. The transmitter moves back and forth at a speed 1 meter/second.

My question is: should i bother about frequency shift due to Doppler effect in my sistuation? Is it normal for the reciever to have signal with +- 5 Hz deviation (shift)?

Best wishes!0690X00000BvdFcQAJ.jpg

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1 reply

Linas L
Senior
Jan 31, 2020 12:09 PM UTC

Not in your application and speeds involved. If you that paranoid, think is that your frequency generator is 2.5ppm (at best !) , this will give 125Hz frequency deviation, you get my idea