Accession Number : AD0782352

Title :   Doppler Microwave Landing System Electronic Pitch Stabilization.

Descriptive Note : Technical document,

Corporate Author : NAVAL ELECTRONICS LAB CENTER SAN DIEGO CALIF

Personal Author(s) : Wager,R. J.

Report Date : 03 JUN 1974

Pagination or Media Count : 37

Abstract : As part of the Navy R and D effort in support of the FAA National Microwave Landing System Development, NELC has studied the electronic pitch stabilization method proposed by ITT Gilfillan and determined the stabilization errors resulting from it. The method is shown to have significant errors. It cannot uniformly correct for the errors caused by ship motion over the entire system coverage volume. Residual error after pitch compensation- a function of aircraft position, elevation antenna offset, and selected pitch compensation angle-causes the aircraft to approach the carrier via an undulating path. Residual errors can be reduced by changing the Gilfillan pitch angle, but they remain significant. (Author)

Descriptors :   *Carrier landings, *Microwave equipment, Landing aids, Doppler effect, Flight decks, Pitch(Motion), Roll, Computer programs

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE