Appeal No. 2000-0519
Application 08/800,627
This is a decision on appeal under 35 U.S.C. § 134 from
a final rejection of claims 1, 4-9, and 11-15. Claims 2, 3,
and 10 have been canceled.
We reverse.
BACKGROUND
It was known to use analog television signals as
illuminators of opportunity in bistatic radar systems. The2
disclosed invention relates to a discreet radar detection
method and system which uses a digital television signal.
The transmitted signal is of the orthogonal frequency
division multiplexed (OFDM) type where the waveform is
defined by the weighted sum of M orthogonal carriers
(specification, p. 4). Unlike the case for digital
transmission, where the weighting coefficients carry the
information to be transmitted on period T , the coefficients
m
in Appellants' invention are chosen to be fixed on N
successive periods T , so as to confer good radar behavior
m
on the resultant signal (specification, p. 4). The received
"Bistatic radar" is defined as "[a] radar using2
antennas at different locations for transmission and
reception." The New IEEE Standard Dictionary of Electrical
and Electronics Terms (IEEE, Inc. 5th ed. 1993).
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