Murata Manufacturing Co., Ltd.

Takuya Maekawa

Nobuya Arakawa

Kazunari Kawahata

Atsuyuki Yuasa

A radar apparatus is constituted by a transmitter including transmit antennas, and a receiver including receive antennas, and processing circuitry. When a first beam pattern is used for detection, a memory of the receiver stores as a first result a detection result indicating the position of a reflection point of radio wave. When a second beam pattern is used for detection, a memory of the receiver stores as a second result a detection result indicating the position of a reflection point of radio wave. A detection-result comparator of the receiver compares the first and second results. When the position of a reflection point of the first result is different from the position of the reflection point of the second result, the detection-result comparator removes the reflection point that differs in position.

Radar apparatus, vehicle, and method of removing unnecessary point

To provide an object position detection system in which positions of detection target objects are determined with accuracy, in which pairing accuracy increases, and in which accuracy of detecting the detection target objects increases. Radar devicesA andB receive, with respective reception antennas, reception waves obtained by transmission waves that have been transmitted from respective transmission antennasbeing reflected back from a plurality of targets T, T, T, T, . . . , and Tm and calculate relative distances to the plurality of targets T, T, T, T, . . . , and Tm from beat frequencies between the transmission waves and the reception waves without using pieces of phase information of the transmission waves and the reception waves. An arithmetic deviceincludes a pairing means and a position calculation means.

Object position detection system

Provided is an object shape detection apparatus that can detect the shape of a raised or depressed portion on the surface of an object. In accordance with a comparison result obtained by a reflection intensity comparator with regard to intensity of a horizontally polarized wave component and a vertically polarized wave component of a reflected wave, the object shape determiner detects the shape of the raised portion and the shape of the depressed portion of a detection target object. The object locator detects the position of the raised portion and the position of the depressed portion of the detection target object by measuring the distance to the raised portion and the distance to the depressed portion of the detection target object detected by the object shape determiner.

Object shape detection apparatus, vehicle including the same, and object shape detection method

A radar device includes a transmit antenna radiating a modulation signal and a receive antenna receiving reflection waves from the modulation signal. The radar device also includes a mixer mixing the modulation signal and the received signal to output a beat signal, a calculation circuit judging presence or absence of an abnormality by using the beat signal, and a memory storing reference data and a threshold. The reference data indicates a phase component of a set frequency signal from a beat signal without necessarily any abnormality. The set frequency signal is generated from the modulation signal reflected on a surface of a housing located at a set distance from the radar device. The calculation circuit extracts a phase component from the beat signal and supplies information indicating the presence of an abnormality if the difference between the extracted phase component and the reference data is greater than the threshold.

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Kyoto, Japan

Takuya Maekawa