I have two peaks in my doppler signal. 1 @ zero and other @ actual velocity.

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Waseem 2024-1-10

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https://ww2.mathworks.cn/matlabcentral/answers/2068321-i-have-two-peaks-in-my-doppler-signal-1-zero-and-other-actual-velocity

回答： Star Strider 2024-1-10

I am building radar data cube. when I process the signal in slow-time it gives me the doppler velocity @ 2 locations. one @ zero and other @ 50m/s. velocity which I input is 50 m/s.

Please have a look. and advise. is this correct and what can be the problem. Regards

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Answer 1

Hassaan 2024-1-10

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The Doppler spectrum you're observing shows two peaks: one at zero velocity, likely due to static objects, and another at the expected 50 m/s, indicating a moving target. The zero velocity peak is common and expected if there are stationary objects in the radar's field of view. If the 50 m/s peak is unexpected, it may be due to signal processing artifacts, system calibration issues, or ambiguities in velocity measurement due to the radar system's limitations. To verify the correctness of these observations, you should review the radar processing chain, conduct tests with known targets, check for calibration accuracy, and ensure the radar's ambiguity resolution is correctly applied.

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