>
>Finally, on the subject of weather radar, I'd like to ask the experts
>here something: How does weather radar obtain the component of wind (or
>droplet) velocity perpendicular to the direction of radar beam
>propagation? In other words, the doppler freq only tells you how fast the
>object is moving toward or away from you. When dealing with aircraft, you
>have to track the individual plane in order to get the other component
>(that is, subtract its last position form the current one). Its seems to
>me as  though this isn't possible with  WX radar since there is no target
>to track, you are  getting an echo from millions of water dropplets
>throughout a whole area.

That's what you get.
And if the rain is dense enough, you go blind behind it.

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