Communications: directive radio wave systems and devices (e.g. – Determining direction – Monopulse
Reexamination Certificate
2009-02-26
2010-02-23
Sotomayor, John B (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining direction
Monopulse
C342S152000, C342S194000, C342S195000, C342S080000, C342S091000
Reexamination Certificate
active
07667638
ABSTRACT:
Systems and methods are provided for determining first and second azimuth angle values representing two closely spaced targets. Monopulse radar scan data is produced and processed to provide quadrature angle data, merged azimuth angle data, and a maximum magnitude of the quadrature angle. A quadrature angle methodology that derives the first and second azimuth angle values from an integration of the quadrature angle data over an angular region within the monopulse scan is applied if the maximum quadrature angle magnitude exceeds the threshold value. A merged azimuth angle methodology that fits the merged azimuth angle data to a polynomial as a function of a boresight angle of the monopulse radar to derive the first and second azimuth angle values is applied if the maximum quadrature angle magnitude does not exceed the threshold value. The first and second azimuth angle values are then displayed to a user.
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Karam: Application for patent being filed concurrently on Feb. 26, 2009, for “Extraction of Relative Signals from Closely Spaced Targets in a Monopulse System”.
Northrop Grumman Systems Corporation
Sotomayor John B
Tarolli, Sundheim Covell & Tummino LLP
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