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AssigneeToyota Motor Europe
InventorsHiromichi Yanagihara, Mineki Soga, Harald Franz Arno Merkel
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A submillimeter wavelength radar system has a receiver (20, 27, 90) for receiving and downconverting signals from content in a field of view of the system and a signal processor (30) arranged to determine information about the content from the downconverted signals, the radar system being arranged to obtain signals of the same points in the field of view from different illumination or receiving angles by having multiple illumination or receive positions, and the signal processor being arranged to use the determined information from the signals from the two or more angles to determine location or orientation of the content. By using information from different angles, it becomes possible to address or overcome the drawback of submillimeter wavelengths that most of the reflection is specular and so only surfaces of an object facing the radar system are detectable, meaning that many objects are unrecognisable.
A submillimeter wavelength radar system having a receiver for receiving and downconverting signals from content in a field of view of the system, the downconverted signals corresponding to a given point in the field of view having time varying amplitude and phase components which have a periodic component which is dependent on the content at the given point and a signal processor arranged to determine information about the content from the periodic component, the radar system being arranged to obtain signals of the same points in the field of view from different illumination or receiving angles by having multiple illumination or receive positions, and the signal processor being arranged to use the determined information from the signals from the two or more angles to determine location or orientation of the content.
A method of using a submillimeter wavelength active radar system, the method having the steps of illuminating a field of view using a transmitter, receiving and downconverting signals from content in a field of view of the system, the downconverted signals corresponding to a given point in the field of view having time varying amplitude and phase components which have a periodic component which is dependent on the content at the given point, the downconverted signals comprising signals from different illumination or receiving angles by having multiple illumination or receive positions, and the method having the steps of processing the downconverted signals to determine information about the content from the periodic component and of using determined information from the signals from the two or more angles to determine location or orientation of the content.
Dependencies are inferred from the claim text.