A Conversation for Automotive Radar

76 GHz clutter returns from water on the road

Post 1


When an automotive radar for ACC at 76 GHz is working in a heavy rain weather and there is a layer of water on the road, then there is a well defined clutter return at an angle approximately of -5 degrees from the horizon and constant range.
The data I collected was taken with a vertically polarized radar.
My questions are:
Is there any difference between vertical and horizontal polarization?
Has the Brewster angle have anything to do with this effect?
What could be the doppler of this return?

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76 GHz clutter returns from water on the road

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