Appeal 2006-2252
Application 10/397,012
Murphy discloses a global communication, navigation, and
surveillance system (GCNS) (col, 3, ll. 3 to 9). The system includes
satellites that broadcast multiple navigation signals and can engage in two
way communications (col. 3, ll. 12 to 13). Murphy does not disclose a GPS
satellite system.
Green discloses a GPS system that includes a self-monitoring
capability in which each satellite can check the reliability of its own signal
(col. 5, ll. 29 to 55). A plurality of tests are performed on the satellite signal
and the position, velocity and time information contained therein to
determine if the signal is reliable (col. 3, ll. 55 to 58). If the signal is
unreliable, a warning signal is sent as part of the next update of the satellite
signal so that users can reject the satellite signal (col. 3, ll 59 to 62). Green
does not disclose that each receiver receives its own navigation signal and
cancels its signal using the GPS receiver’s signal processor.
ANALYSIS/CONCLUSION
As we find that Brodie discloses each and every element of claim 1,
and a GPS in particular, we will sustain the rejection as it is directed to claim
1. We will also sustain this rejection as it is directed to claims 14 and 28
because even though Appellants contend that Brodie does not disclose that
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