Fujitsu Ten Limited

Denso Ten Limited

Shinya Aoki

Seiya Fujitsu

Hisateru Asanuma

Masayuki Kishida

Yasuhiro Kurono

Yayoi Nakanishi

Daisuke Nishio

Seiji Kawabe

A radar apparatus detects objects in a vicinity of a host vehicle on which the radar apparatus is mounted. The radar apparatus includes a microcomputer configured to operate as a prediction processor that calculates a prediction position of a previously detected target in a current detection cycle and an extrapolation processor that executes an extrapolation to determine that a same target as the previously detected target exists in the prediction position for the current detection cycle. The extrapolation processor executes the extrapolation when the prediction position is outside a detection range of the radar apparatus and a speed of the host vehicle is lower than a predetermined value.

Radar apparatus

A radar apparatus includes: a detection portion that transmits a radio wave to a target and receives a radio wave reflected on the target so as to detect instantaneous data; and an allocation portion that allocates the instantaneous data to prediction data of the target so as to take continuity of the target; and the allocation portion corrects velocity of the instantaneous data and velocity of the prediction data respectively as velocities made in line with a predetermined direction set as a reference, so as to allocate the instantaneous data to the prediction data based on at least magnitudes of the respectively corrected velocities.

Radar apparatus and target detecting method

There is provided a radar device. A detection vehicle velocity acquiring unit is configured to acquire a detection vehicle velocity detected on the basis of rotation of a wheel. A relative velocity calculating unit is configured to calculate the relative velocity of a still object. A correction value calculating unit is configured to calculate a first correction value on the basis of the detection vehicle velocity and the relative velocity of the still object obtained in a CW mode and calculate a second correction value on the basis of the detection vehicle velocity and the relative velocity of the still object obtained in a FM-CW mode. A vehicle velocity correcting unit is configured to correct the detection vehicle velocity using at least one of the first correction value and the second correction value.

Radar device and vehicle velocity correction method

There is provided a radar device. A signal processing unit is configured to: acquire first and second estimate peaks estimated as a first peak in a rising section and a second peak in a falling section; extract first and second history peaks existing in a predetermined range from the first and second estimate peaks. A determining unit is configured to determine that the signal processing unit has erroneously extracted the first peak corresponding to a still object as the first peak corresponding to a moving object, if an accuracy of pairing of the first history peak and a second object peak existing in a predetermined range apart from the first history peak by a predetermined distance is larger than an accuracy of pairing of the first and second history peaks in a situation where a distance between the radar device and the moving object decreases.

Radar device and peak processing method

A radar device which receives reflected waves from objects, and derives still targets, includes: a determining unit that determines whether any other still target exists at a position in the vicinity of a reference target which is a still target existing at a position closest to a position of a vehicle in a longitudinal direction; and a setting unit that makes it easy to determine the reference target as a roadblock, in a case where the number of other still targets existing at positions in the vicinity of the reference target is equal to or less than a predetermined value.

Radar device, vehicle control system, and signal processing method

There is provided a radar apparatus. An extracting unit extracts a peak signal obtained from a difference frequency between a transmitting signal and a receiving signal during a first period in which the frequency of the transmitting signal ascends and a second period in which the frequency descends. A pairing unit pairs the peak signals of the first and second periods based on a predetermined condition. A deriving unit derives target information including a position of a target based on paired data obtained by pairing the peak signals. The pairing unit selects normal-paired data which is paired in a correct combination, from among the plurality of paired data, based on a plurality of parameter values of the peak signals of the first and second periods which are to be paired, and a discrimination function for discriminating true or false of the pairing.

Growing community of inventors

Kobe, Japan

Shinya Aoki