Communications: directive radio wave systems and devices (e.g. – Determining distance – Height finder
Reexamination Certificate
2006-03-02
2009-02-03
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Height finder
C342S120000, C342S094000
Reexamination Certificate
active
07486228
ABSTRACT:
A method for compensating for range gate slide with respect to received returns within a radar altimeter is described. The method includes adjusting the amount of overlap between a range gate pulse and a radar return signal until an altitude output by the radar altimeter is within a desired tolerance, and incrementally increasing an amount of attenuation within the receiver circuit of the radar altimeter until the radar altimeter breaks track with the radar return signal. the method also includes recording a signal strength and altitude output at each increment of attenuation, determining an altitude error for each altitude output, and fitting the signal strength data against the altitude error using a plurality of variable length line segments.
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Elgersma Michael R.
Greenwood Michael W.
Brainard Timothy A
Fogg & Powers LLC
Honeywell International , Inc.
Tarcza Thomas H
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