Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Asahi Kasei Kabushiki Kaisha

Asahi Kasei Fibers Corporation

Mitsubishi Denki Kabushiki

Koichi Kai

Takahiko Fujisaka

Masashi Mitsumoto

Atsushi Okamura

Naohisa Uehara

Masahira Akasu

Yuichiro Nozaki

Junko Deguchi

Yoshio Kosuge

Takamitsu Okada

Rokuzou Hara

Satoko Sakata

Provided is a fabric for use as sportswear, the side fabric of a futon or the inner bag thereof that has superior heat retention and a soft texture despite being lightweight and thin. The fabric is a thin fabric having a fabric density of 15 g/mto 50 g/min which thermoplastic synthetic fibers having fineness of 5 dtex to 30 dtex are arranged in at least a portion of the warp yarn or weft yarn, wherein the average deviation of the coefficient of friction on at least one side of the fabric is 0.008 to 0.05, and the value of Qmax of that one side of the fabric is 85 W/m&#xb7;&#xb0; C. to 125 W/m&#xb7;&#xb0; C.

Thin woven fabric having superior comfort

The purpose of the present invention is to provide a fabric provided with both excellent abrasion resistance and soft texture, and this fabric is a fabric having excellent abrasion resistance in which at least a portion of a warp or a weft yearn thereof comprises a polyamide fiber twisted yarn.

Abrasion-resistant fabric

In order to improve accuracy of kind identification of a detected object in a radar device provided in a sensor fusion system, information of the result of kind identification by a camera device provided in the sensor fusion system is given to the radar device and an attribution degree database that is used for identification determination by the radar device during the operation of the sensor fusion system is updated by a database update block.

Radar device and sensor fusion system using the same

A radar apparatus measures an azimuth angle with a calculation device that performs super-resolution angle measuring processing in which relative speeds and relative distances among target objects are calculated, when two azimuth angles are obtained for a given target object that has been detected, the calculation device performs an other-signal detection processing in which, among other detected target objects, a target object is searched whose azimuth angle is the same as one of the two azimuth angles and whose beat frequency upon frequency-increasing modification or frequency-decreasing modification is the same as that of the given target object; and when, through the other-signal detection processing, another target object that satisfies the condition is detected, the calculation device eliminates one of two azimuth angles of the detected given target object, which is equal to the azimuth angle of said another target object detected through the other-signal detection processing.

Radar apparatus

A radar apparatus includes a DBF process portion for grouping reception signals over plural channels into plural groups and performing DBF on each group, a summing portion for summing amplitudes or power of frequency components obtained by the DBF performed by the DBF process portion on each group, a peak detecting portion for detecting a peak frequency of a signal of the electric wave reflected by a target from results of the summation at the summing portion, a distance/speed calculating portion for calculating the distance and speed of the target based on the peak frequency, and an angle calculating portion for extracting a frequency component of the peak frequency detected by the peak detecting portion to calculate the angle of the electric wave reflected by the target. Thus, the amount of DBF calculation can be reduced, and a highly accurate positional information of the target can be obtained.

Radar apparatus for detection position information of a target by receiving reflection signals reflected by the target with a plurality of reception antennas

A radar apparatus includes a sending unit for sending a transmission wave, a plurality of receiving parts for receiving a reflected wave from a reflecting object in a parallel manner, beat signal generation parts for acquiring beat signals at the receiving parts, respectively, from the transmission wave and the wave received at the receiving parts, a beat signal processing part for individually processing the beat signals of the receiving parts, a DBF processing part for DBF processing a beat signal processing result, and an object detection part for acquiring information on the reflecting object from frequency components of a DBF processing result or the beat signal processing result. Amounts of phase lag of the receiving parts are set to different values. The beat signal processing part includes a phase correction part that corrects the phase lag amounts corresponding to the individual receiving parts so as to make them equal to one another.

Provided is a radar device includes a transmitting unit, a receiving unit for receiving the electromagnetic wave reflected by a target object of the transmission electromagnetic wave, a target object measuring unit for measuring at least a distance between the radar device and the target object on the basis of the transmission and reception electromagnetic waves, a transmission output control unit (S, S) for stopping or reducing a transmission output of the transmitting unit under a predetermined condition, a transmission output control function abnormality determining unit (Sto S) for determining that the transmission output control unit is abnormal upon receiving the reception electromagnetic wave having an intensity exceeding a predetermined threshold value even at the time of one of stop and reduction of the transmission output, and an abnormality determination time processing unit (S) for stopping a power supply of the radar device when an abnormality is determined.

Radar device with transmission output control and transmission output control function abnormality determining means

To obtain a radar system capable of obtaining an appropriate angular precision by calculating an angle error based on distributions of relative speeds and angles of reflecting points, and of obtaining the appropriate angular precision including an axis deviation angle by simultaneously calculating the angle error and the axis deviation angle. A radar system mounted on a movable body is provided with a radar device that calculates relative speeds and azimuth angles of plural reflecting points; an azimuth angle error estimating device that estimates an error of the azimuth angle calculated by the radar device based on the relative speeds and the azimuth angles of the plural reflecting points; and a correcting device that corrects the azimuth angle calculated by the radar device by using the azimuth angle error estimated by the azimuth angle error estimating device.

Radar system

An on-vehicle radar system capable of detecting a range error from range data based on an echo from a target (). Range error is detected when amplitudes of beat frequency components in two adjacent range gates are substantially equal. The system includes a transmitting unit () for radiating a modulated wave having frequency increasing and decreasing repetitively after pulse modulation, a receiving unit () for receiving the echo, and an arithmetic unit () for detecting a range error ascribable to aberration of modulation band width due to frequency increase and decrease of transmission wave (W) by comparing a range corresponding to the range gate with that determined from a frequency difference between transmission wave and echo. The arithmetic unit () detects the range error on the basis of frequency difference components having substantially same amplitudes in adjacent range gates.

On-vehicle radar system

A radar device includes a mixer that mixes an output of a transmit antennaand an input of a receive antennaan LPFan A/D converterthat samples an output signal of the LPFand subjects the sampled signal to A/D conversion, an FFT processing devicethat subjects the converted signal to high-speed Fourier transformation, an aliasing discriminating/correcting device that discriminates a signal having a frequency component where aliasing occurs from a result by the FFT processing deviceand corrects the signal to a signal of a normal frequency component where no aliasing occurs to obtain a distance and relative velocity data of the object, and a target object selecting device that selects necessary data from the distance and relative velocity data of the object which are obtained from the aliasing discriminating/correcting means.

Radar device for detecting a distance and relative speed of an object

To provide a radar system mounted on a vehicle that reliably detects the reception of the interference wave with high-performance and inexpensively. There is provided a radar system mounted on a vehicle for detecting a target object, including a transmitter for transmitting an electromagnetic wave, a receiver for receiving the electromagnetic wave reflected by the target object, a signal processor for measuring a distance between a vehicle of his/her own and the target object and a relative velocity on the basis of the transmitting electromagnetic wave and the receiving electromagnetic wave, and an interference detector for suspending a transmit operation of the transmitter under a control of the signal processor to detect an interference signal from another external device.

Radar system mounted on vehicle

A distance and speed measuring method and a radar signal processing apparatus using the method are provided which are capable of obtaining highly reliable measurement results while reducing the number of false targets and undetectable targets, by obtaining the relative distance and the relative speed of each target based on the frequencies of a beat signal of up (or down) phase alone through the use of information in a time series direction of the frequencies of the beat signal of up (or down) phase.

Distance/velocity measuring method and radar signal processing device

A radar signal processing apparatus has a range gate for extracting range gate data sequences from a memory, a first frequency extraction section which extracts a beat frequency corresponding to a target by performing frequency analysis by FFT at a low computation load and with low frequency measurement accuracy on all range gate data sequences extracted by the range gate, a second frequency extraction section which extracts a beat frequency corresponding to the target by performing frequency analysis by FFT at a high computation load and with high frequency measurement accuracy only on the range gate data sequence from which a beat frequency has been extracted by the first frequency extraction section, and a distance and speed derivation section which obtains the relative distance and the relative speed of the target on the basis of the beat frequency extracted by the second frequency extraction section.

Radar signal processing apparatus, and method of measuring distance and speed

AN FM pulse Doppler radar apparatus performs pulse modulation of modulating waves having repeatedly increasing and decreasing frequency, transmits thus modulated waves, receives at each range gate having an interval equivalent to a pulse width, reflected waves reflected from an object, determines a distance according to the range gate, and calculates the distance to the object and the relative velocity of the object based on the difference between frequencies of the transmission waves and the received waves. The apparatus includes a velocity determining unit for determining velocity of the radar-mounted vehicle and a comparison-and-detection unit for comparing the detected distance according to the range gate and the distance calculated based on the difference between the frequencies of the transmission waves and the received waves. The comparison-and-detection unit detects, based on the velocity of the vehicle and the relative velocity between the vehicle and the object, a distance error due to an error in transmission frequency bandwidth.

Growing community of inventors

Tokyo, Japan

Koichi Kai