Mitsubishi Electric Corporation

Kei Suwa

Shumpei Kameyama

Tadashi Oshima

Masaharu Imaki

Toshio Wakayama

Hiroshi Sakamaki

Teruyuki Hara

Satoshi Kageme

Tomoya Yamaoka

Kentaro Isoda

Yu Shimizu

Shohei Nakamura

Fuyuki Fukushima

Kazuhisa Okamoto

Takayuki Kitamura

Masayoshi Tsuchida

Yumiko Katayama

Yasuhide Nonaka

While transmitting any one transmission signal of a plurality of transmission signals, a transmitting-receiving unit in a radar device acquires, as a reception signal for target detection, a reception signal of a frequency band different from a frequency band of the transmission signal, and blocks a reception signal of the same frequency band as the frequency band of the transmission signal.

Radar device

Disclosed is a physique estimation device that can estimate a physique. The physique estimation device includes: a sensor having a transmission antenna to transmit a transmission wave, and a reception antenna to receive the transmission wave reflected by at least one target in a vehicle cabin as a received wave; a frequency analysis unit to acquire position information about a reflection point where the transmission wave is reflected using the received wave; and a physique estimation unit to estimate the physique of a non-static object present in the vehicle cabin using the position information.

Physique estimation device, physique estimation method, seatbelt reminder system, and airbag control system

An angle measuring device includes: a signal extracting unit for extracting a signal that includes a first reflection wave and does not include a second reflection wave as a first demodulated signal and a signal that includes the second reflection wave and does not include the first reflection wave as a second demodulated signal from reception signals output from one or more reception antennas among a plurality of reception antennas; an elevation calculating unit for calculating an elevation of a target by performing monopulse angle measurement using a sum signal of the first demodulated signal and the second demodulated signal and a difference signal between the first demodulated signal and the second demodulated signal; and an azimuth calculating unit for calculating an azimuth of the target using reception signals output from the plurality of reception antennas.

Angle measuring device, angle measuring method, and in-vehicle device

A radar image processing device includes a phase difference calculating unit calculating a phase difference between phases with respect to a first and a second radio wave receiving points in each pixel at corresponding pixel positions among pixels in a first and a second suppression ranges, the first and the second suppression ranges being suppression ranges in a first and a second radar images capturing an observation area from the first and the second radio wave receiving points, respectively; and a rotation amount calculating unit calculating each phase rotation amount in the pixels in the second suppression range from each phase difference, wherein a difference calculating unit rotates phases in the pixels in the second suppression range based on the rotation amounts, and calculates a difference between pixel values at corresponding pixel position among the pixels in the first suppression range and phase-rotated pixels in the second suppression range.

Radar image processing device and radar image processing method

There are provided an azimuth Fourier transform unit that transforms a SAR image into components in a Doppler frequency band, a band cutting-out unit that cuts out sub-band components from the components in the Doppler frequency band, and an azimuth inverse Fourier transform unit that transforms the sub-band components into sub-images, respectively. An image reconstructing unit extracts, for each area irradiated with a beam, a pixel sequence corresponding to the irradiated area from each of the sub-images, and collects the plurality of extracted pixel sequences to construct images for video.

Radar video creation apparatus and method

A signal processoris configured so as to compensate for a peak shift of the distance between an SAR sensorand a target, the peak shift occurring in the received signal subjected to range compression performed by an image reconstruction processing unitdue to a movement of the SAR sensorduring a time period until a reflected wave of a pulse signal is received by the SAR sensorafter the pulse signal is emitted from the SAR sensor. As a result, even when the SAR sensormoves, an SAR image in which no azimuth ambiguity occurs can be reconstructed.

Synthetic aperture radar apparatus

A passive radar device includes: a pulse-by-pulse range compression unit executing cross-correlation processing between received signals of a direct wave and scattered wave on each of pulses divided by a direct-wave reception unit and a scattered-wave reception unit, and calculating a pulse-by-pulse range profile; a block-by-block Doppler processing unit calculating a first Doppler frequency spectrum by executing pulse-direction Fourier transform in block units each grouping plural pulses; a Doppler frequency cell-associated range migration compensation unit compensating a range-direction movement amount with respect to the first Doppler frequency spectrum on a Doppler-frequency-cell-by-Doppler-frequency-cell basis and on a block-by-block basis; and a block-direction Doppler processing unit calculating a second Doppler frequency spectrum by executing block-direction Fourier transform on an output from the Doppler frequency cell-associated range migration compensation unit.

Growing community of inventors

Chiyoda-ku, Japan

Kei Suwa