Systems and methods for enhanced ATC overlay modulation

Details Systems and methods for enhanced ATC overlay modulation Systems and methods for enhanced ATC overlay modulation

2009-06-10

2011-10-04

Sotomayor, John B (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Air traffic control

C342S030000, C342S057000

Reexamination Certificate

active

08031105

ABSTRACT:
Embodiments of the present invention disclose systems and methods for providing an enhanced data link using overlaid modulation. Through embodiments of the present invention, existing ATC (or other) modulated signals using existing standard frequencies may be utilized to transmit (e.g., from an aircraft transponder) additional information in a manner that does not render the transmitted signal unrecognizable by legacy ATC equipment. Legacy equipment will be able to demodulate and decode information that was encoded in the transmitted signal in accordance with preexisting standard modulation formats, and updated equipment can also extract the additional information that was overlaid on transmitted signals.

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