Mitsubishi Electric Corporation

Hitomi Ono

Toshiyuki Ando

Akinori Fujimura

Eisuke Haraguchi

Terumi Sunaga

Noboru Kawaguchi

Muneharu Kuwata

Masashige Suwa

Masaaki Kusano

Yoshio Inasawa

Jiro Suzuki

Shota Narasaki

Masaki Hirano

Toru Sato

Akihiro Fujie

Toshiyasu Tsunoda

Yoshitaka Koda

Yoshichika Miwa

A remote control manipulator system includes: a manipulator being controlled by an operator remotely to handle an object; a stereoscopic display device that displays a right-eye image and a left-eye image so as to be stereoscopically viewed; a model image generator that generates a model image being an image of an integrated three-dimensional model viewed from a viewpoint designated by the operator, the integrated three-dimensional model being a three-dimensional model obtained by integrating the manipulator model and a surrounding environment model being generated by performing image processing on the right-eye image and the left-eye image and being a three-dimensional model of the object and a surrounding environment thereof; and a model image display device that displays the model image and is configured to be able to be viewed by the operator switching between the stereoscopic display device and the model image display device through moving the head of the operator.

Remote control manipulator system and remote control assistance system

A satellite receiver includes: demultiplexing units each demultiplexing, into subchannel signals of a predetermined band, a digital reception signal obtained by converting a calibration signal received by a corresponding one of receiving antenna elements into a digital signal; excitation coefficient multiplication units multiplying the subchannel signals by an excitation coefficient; a complex adder adding the subchannel signals multiplied by the excitation coefficient together for each subchannel signal of the same band; a correlation detection unit calculating, with the use of one demultiplexing unit as a reference demultiplexing unit, a cross-correlation value for each subchannel signal output from each demultiplexing unit different from the reference demultiplexing unit with respect to a subchannel signal of a same band output from the reference demultiplexing unit; and an excitation coefficient generation unit generating a corrected excitation coefficient based on a cross-correlation value and an excitation coefficient created in advance.

Satellite receiver and satellite communication system

A satellite transmitter includes K transmission antenna elements, a multiplexing unit configured to multiplex each of K digital signals on a frequency axis and then convert the multiplexed digital signals to time-domain digital signals, a digital-to-analog converter, a PAPR calculation unit configured to calculate a PAPR for each of the K digital signals, a beam-to-beam relative phase calculation unit configured to calculate a beam-to-beam relative phase for suppressing a peak power of the transmission antenna elements, an excitation coefficient calculation unit configured to calculate K updated excitation coefficients based on the beam-to-beam relative phase and the beam-formation excitation coefficient, and an excitation coefficient multiplication unit configured to generate the digital signals of a frequency domain to be output to the multiplexing unit by multiplying a received relay signal by each of the K updated excitation coefficients in the frequency domain.

Satellite transmitter and relay satellite communication system

A laser radar device includes: a modulator () for causing a transmission seed light beam to branch, and giving different offset frequencies to a plurality of the transmission seed light beams having branched, and then modulating the plurality of transmission seed light beams into pulsed light beams and outputting the pulsed light beams, or for modulating the transmission seed light beam into a pulsed light beam, causing the pulsed light beam to branch, and giving the different offset frequencies to a plurality of the pulsed light beams having branched, and then outputting the plurality of pulsed light beams; a band pass filter () in which a frequency band including frequencies of signal components included in a plurality of beat signals detected by an optical heterodyne receiver () is set as a pass band and a frequency band not including the frequencies of the signal components is set as a cutoff band; and an ADC () for sampling the beat signals passing through the band pass filter () at a sampling frequency.

Laser radar device

A laser radar system according to the present invention includes: a light source to output light having a first frequency in a first period and light having a second frequency in a second period; an optical splitter to split the lights, outputted from the light source, into signal light and local oscillator light; an optical modulator to modulate the signal light into pulsed light; an optical antenna to output the pulsed light into space and to receive, as reception light, the scattered light from a target; an optical heterodyne receiver to perform heterodyne detection on the reception light by using the local oscillator light; and a measurement unit to measure the distance to the target or the movement characteristics of the target by using the reception signal detected by the optical heterodyne receiver, wherein the optical heterodyne receiver performs the heterodyne detection on the first frequency of the reception light by using the second frequency of the local oscillator light. With this configuration, a large amount of frequency shift can be provided between the signal light and the local oscillator light, and thus, the distance to the target can be measured with high resolution by using short pulsed-light.

Laser radar system

A satellite receiver includes: N reception antenna elements; N demultiplexing units; a correlation detection unit configured to perform correlation processing on each of reception signals demultiplexed by the N demultiplexing units with a reception antenna element that receives the highest power being set as a reference element so as to calculate a relative phase difference, and calculate an excitation coefficient for cancelling a phase difference between the N reception antenna elements for each of sub-channels based on the calculated relative phase difference; N phase compensation units configured to multiply the reception signals demultiplexed by the N demultiplexing units, respectively, by the excitation coefficient for each of the sub-channels; and a combiner configured to combine multiplication results from the N phase compensation units for each of the sub-channels to generate output signals.

A light source system () illuminating an optical system to be inspected () and making light fluxes of a plurality of wavefront measurement visual fields be emitted from the optical system to be inspected; a single wavefront sensor () calculating wavefront aberration on a basis of measurement of the light fluxes of the plurality of wavefront measurement visual fields emitted from the optical system to be inspected (); and an optical path optical system () are included. The optical path optical system selectively makes the light fluxes of the plurality of wavefront measurement visual fields emitted from the optical system to be inspected () be incident on the wavefront sensor ().

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Tokyo, Japan

Hitomi Ono