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US 6,598,009 B2Granted
Method and device for obtaining attitude under interference by a GSP receiver equipped with an array antenna
OwnerChun Yanginventor
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OwnerChun Yanginventor
Estimating the term…
A GPS receiver that determines its own attitude under jamming conditions is created by augmenting it with an array antenna and a novel signal processing system. The augmented signal processing system comprises a cascaded parallel architecture inserted between the array antenna and the GPS receiver. A blind adaptive nulling processor is cascaded ahead of the GPS receiver so that the GPS receiver can operate on the jamming-suppressed signals in a normal manner. A monopulse angular measurement unit in series with an attitude determination unit interacts in parallel with the blind adaptive nulling processor and the GPS receiver. Constrained beamforming adaptive monopulse is used to simultaneously place nulls in both the sum and difference beams toward jammers while maintaining the monopulse ratio for accurate angular measurement. In this way, the GPS receiver is capable of providing rotational information in addition to regular time and translation information.
A system for determining attitude relative a predefined coordinate frame using signals received from global positioning system satellites, said system comprising:
A method of determining the attitude of an antenna array relative a predetermined coordinate frame using signals from global positioning system satellites, said method comprising the steps of:
A method of determining the attitude of an antenna array relative a predetermined coordinate frame using signals from global positioning system satellites, said method comprising the steps of:
Dependencies are inferred from the claim text.