Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Reexamination Certificate
2006-11-28
2006-11-28
Issing, Gregory C. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
C342S357490, C342S357490, C455S013200
Reexamination Certificate
active
07142159
ABSTRACT:
The pseudolite includes a communication (COM) satellite receiver for receiving a communication satellite specific RF signal from a communication satellite and providing communication satellite navigation and position data. A GNSS receiver receives a GNSS signal from a GNSS satellite and provides GNSS timing information. A pseudolite transmitter receives the communication satellite navigation and position data and the GNSS timing information. The pseudolite transmitter includes at least one digital signal generator for utilizing the communication satellite navigation and position data and the GNSS timing information for providing a digital signal generator output having an intermediate frequency and navigation message data which are suitable for up-conversion to a desired communication channel RF frequency. At least one communication satellite RF module of the pseudolite transmitter receives the digital signal generator intermediate frequency output from an associated signal generator and converts the intermediate frequency output to a communication satellite transmit RF signal having the desired communication channel RF frequency. The communication channel RF frequency is preferably adjustable and may cover a range of potential communication frequencies.
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Ozimek, Igor et al, “Navigation-Related Services over Stratospheric Platforms,” Electrotechnical Review, Ljubljana, Slovenija, Feb. 2004.
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GPS Pseudolite Transceivers and Their Applications, Jonathan M. Stone, et al., Ion National Technical Meeting 99, San Diego, California, Jan. 25-27, 1999.
Eppele Kyle
Issing Gregory C.
Jensen Nathan O.
Rockwell Collins, Inc.
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