Radar protected against rain clutter and method for protecting a

Details Radar protected against rain clutter and method for protecting a Radar protected against rain clutter and method for protecting a

1987-04-27

1989-03-07

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Clutter elimination

342 26, 342149, 342188, 342365, G01S 736

Patent

active

048110205

ABSTRACT:
The radar is designed to identify and then eliminate rain clutter signals. For this, the radar works in circular polarization with alternately identical and opposite polarization directions at transmission and reception, from one recurrence to the next one. The signals are identified by a comparator which compares the sigma video signals relating to the same distance quanta for two successive recurrences, the identifying criterion being a major difference in the level of the signals compared, for rain clutter signals, and little difference for useful echo signals. A switch controlled by the comparator eliminates the parasite signals.

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