Communications: directive radio wave systems and devices (e.g. – With particular circuit – Digital processing
Reexamination Certificate
2006-02-20
2009-08-18
Sotomayor, John B (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Digital processing
C342S090000, C342S095000, C342S096000, C342S097000, C342S107000, C342S113000, C342S114000, C342S115000, C342S139000, C342S140000, C342S162000
Reexamination Certificate
active
07576688
ABSTRACT:
Moving objects are detected with a radar by collecting samples of a received signal over an integration period. The terms of a match function contain a product of a sample of said received signal and a delayed-in-time, Doppler-shifted replica of a transmission and depend on parameters that describe an object that caused a reflection of the transmission. The most probable values of the parameters are found by maximizing the match function through Fourier transforming a vector consisting of terms of the match function. Those of said products that contain a non-zero contribution of said delayed-in-time, Doppler-shifted replica of a transmission are actually computed while the others of said products are zero Only non-zero blocks of the products count as final terms to the vector to be Fourier transformed that have nonzero value while intermittent blocks that have zero value are left out. The most probable values of the parameters are those that result from Fourier transforming the vector consisting of the final terms.
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Eigenor Oy
Sotomayor John B
Wood Phillips Katz Clark & Mortimer
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