Radar system, method of obtaining image, control method based on image data and monitoring method using milliwaves
AssigneeNEC Corporation
InventorsTakeshi Kikuchi, Hitoshi Nomi
Life of this patent
Estimating the term…
Abstract
A plurality of sub-antennas in a two-dimensional plane antenna 11 or the like receive milliwaves from concerned object 20. AnA/D converter 12 converts the received signal to digital data. A signal processor 13 executes signal processing on the digital data for displaying images on a monitor 15. Prior to the measurement, a calibration signal source 14 generates a calibration signal. A phase compensator 133 in the signal processor 13 obtains phase compensation data, and compensates measurement data.
Claims17
Radar system for displaying images of a concerned object on a monitor or the like by receiving milliwaves emitted from the concerned object comprising:
- a calibration signal source for generating a milliwave calibration signal at the time of calibration;
- a receiving antenna having an effectively two-dimensional receiving antenna function;
- and
- a signal processor for compensation processing a milliwave received signal from the concerned object received by the receiving antenna based on the calibration signal received by the receiving antenna.
A method of obtaining images of a concerned object by obtaining image data thereof by receiving milliwaves emitted therefrom, wherein:
- received milliwave signal from the concerned object received by a receiving antenna is compensation processed on the basis of a predetermined milliwave calibration signal received by the receiving antenna, which effectively has a two-dimensional receiving antenna function, at the time of calibration, thereby obtaining image data of the concerned object.
A control method comprising the steps of:
- compensation processing a milliwave received signal emitted from concerned object and received by a receiving antenna, which effectively has a two-dimensional receiving antenna function, based on a predetermined milliwave calibration signal received at the time of calibration, thereby obtaining image data of the concerned object;
- and
- executing predetermined control according to the obtained image data.
A method for monitoring object using milliwaves, wherein received milliwave signal from the concerned object received by a receiving antenna is compensation processed on the basis of a predetermined milliwave calibration signal received by the receiving antenna, which effectively has a two-dimensional receiving antenna function, at the time of calibration, to obtain image data of the concerned object, and the object is monitored based on the obtained image data.
Dependencies are inferred from the claim text.