Frequencies from 1-11 GHz are frequency bands where SAR imaging radars operate. Spaceborne altimeters generally use frequencies in the 2-18 GHz band while scatterometers generally use frequencies between 5-36 GHz. Frequencies around the 13-18 GHz band is where precipitation radars generally operate.
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Police radar transmits radio waves on a specific frequency, and the three frequency bands currently in use (in North America) are X-band, K-band, and Ka-band .
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