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1. (WO2001035119) MICROWAVE ICING AVOIDANCE SYSTEM

Pub. No.:    WO/2001/035119    International Application No.:    PCT/US2000/031207
Publication Date: Fri May 18 01:59:59 CEST 2001 International Filing Date: Tue Nov 14 00:59:59 CET 2000
IPC: G01N 22/00
Applicants: RAYTHEON COMPANY
Inventors: LINES, R., Todd
SAVAGE, Richard, C.
COLE, Jim
Title: MICROWAVE ICING AVOIDANCE SYSTEM
Abstract:
A passive microwave icing avoidance system (MIAS) senses atmospheric conditions that lead to aircraft icing when the aircraft is flying at an altitude abover the earth's surface. The MIAS includes a 37 GHz receiver and an 89 GHz receiver coupled to an antenna for sensing two microwave frequencies at different angles creating six passive microwave beams. The two receivers output data to a processor that processes the data to determine the amount of cloud liquid water and generates signals to an indicator/display to instruct the pilot of an aircraft to divert or proceed along the flight path.