Communications: directive radio wave systems and devices (e.g. – Determining distance – Altimeter
Reexamination Certificate
2005-05-24
2005-05-24
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Altimeter
C342S062000, C342S159000, C342S161000, C342S189000, C342S194000, C342S195000
Reexamination Certificate
active
06897804
ABSTRACT:
A method for calculating a center frequency and a bandwidth for a radar doppler filter is herein described. The center frequency and bandwidth are calculated to provide radar performance over varying terrain and aircraft altitude, pitch, and roll. The method includes receiving an antenna mounting angle, a slant range, and velocity vectors in body coordinates, calculating a range swath doppler velocity, a track and phase swath bandwidth, and a phase swath doppler velocity. The method continues by calculating a range swath center frequency based on the range swath doppler velocity, calculating a phase swath center frequency based on the phase swath doppler velocity, and calculating a level and verify swath bandwidth based upon the track and phase swath bandwidth.
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Hager James R.
Heidemann Thomas W.
Jicha Thomas R.
Alsomiri Isam
Armstrong Teasdale LLP
Honeywell International , Inc.
Luxton, Esq. Matthew
Tarcza Thomas H.
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