초록 ▼

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 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.

대표청구항 ▼

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 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. voltage inputs include voltage inputs for each phase. 17. The analog signal receiver of claim 14 wherein said multi-purpose inputs are selects from the group consisting of current inputs, low frequency voltage inputs, and environmental condition sensor inputs. 18. The analog signal receiver of claim 14 wherein said high frequency voltage event detector includes a peak detect circuit for detecting said high frequency voltage events. 19. A method for processing data in a power and environmental condition monitoring system, said method comprising: receiving high frequency data and low frequency data, representing voltage signals and environmental condition signals; generating data log entries, wherein each of said data log entries includes at least a date/time stamp and at least some of said low frequency data; logging said data log entry in a data log; classifying said high frequency data and said low frequency data to determine an event classification; analyzing said high frequency data and said low frequency data based upon said event classification and selecting s