This article describes a frequency modulated single-antenna radio altimeter The entire structure includes a transmitter/receiver network with a single antenna for operation in both a continuous wave (CW) mode and an interrupted continuous wave (ICW) mode to provide a highly accurate altitude indication. An altimeter transmitter generates a constant FM period CW signal below a critical altitude and a variable FM period ICW signal above the critical altitude. The main advantages of this altimeter are lower cost and weight, good measurement accuracy, and high altitude range.
An aircraft single-antenna FM radio altimeter
Microwave Journal, Euro-Global Edition, USA ; 46 , 5 ; 196-200
2003
5 Seiten, 6 Quellen
Aufsatz (Zeitschrift)
Englisch
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