Patent ID: 7201054
Filing Date: 2007-04-10
Classification: G01N

Abstract:
1. A system for determining a direction of arrival of a signal emitted by a source, said system comprising: a first transducer for receiving the emitted signal and for providing a first transducer output signal corresponding to the emitted signal received by the first transducer; a second transducer spaced a distance D a first receiver for receiving the first transducer output signal and for providing a first receiver output signal indicating the phase of the first transducer output signal received by the first transducer; a second receiver for receiving the second transducer output signal and for providing a second receiver output signal indicating the phase of the second transducer output signal received by the second transducer; a processor for receiving the first receiver output signal and the second receiver output signal, said processor determining a first set of interferometer planes corresponding to a phase difference between the first transducer output signal and the second transducer output signal, said phase difference being a function of the distance D