Rinehart projection

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Rinehart projection

A map projection consisting of a set of overlays, used with radar displays, to compensate for the possibility of second-trip echoes.

The overlays, shifted in range by multiples of the maximum unambiguous range, make it possible to determine where range-aliased echoes are in relation to cities, political boundaries, or other features commonly plotted on radar displays. If radar echoes are automatically dealiased, the Rinehart projection need not be used.

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