Denso Ten Limited

Seiya Fujitsu

Shinya Aoki

Hisateru Asanuma

A radar apparatus includes: a derivation portion that derives an instantaneous value of a target; a tracking portion that tracks a single target based on a derivation result of the derivation portion; a lost process portion that performs a lost process to stop the single target from being tracked by the tracking portion; and a target classification portion that classifies the single target into a standstill target or a moving target; and, when the single target is the standstill target, the lost process portion suppresses generation of the lost process more greatly than when the single target is the moving target.

Radar apparatus and signal processing method

A processing apparatus for a target detection apparatus includes a processor and associated memory. The processor and associated memory are configured to: generate, for a plurality of reflection points at which transmitted radio waves are reflected by a target, a plurality of instantaneous data sets, each of which includes a projected relative velocity of a said reflection point with respect to a host vehicle; calculate, for each of the plurality of instantaneous data sets, a projected ground velocity of the reflection point with respect to the host vehicle based on the projected relative velocity and a velocity of the host vehicle; align starting points of the calculated projected ground velocities to a predetermined point; and estimate a movement direction of the target from an intersection of perpendicular lines to the projected ground velocities whose starting points are aligned.

Processing apparatus for estimating a movement direction of a target

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 for detecting a target based on a frequency-modulated transmission wave and reflected waves of the transmission wave from the target. An extracting unit configured to extract peaks corresponding to the target based on beat signals which are differential waves between the transmission wave and the reflected waves. A generating unit configured to generate instantaneous values corresponding to the peaks based on the peaks extracted by the extracting unit. A filtering unit configured to generate a target data item corresponding to the instantaneous values by performing chronological filtering on the instantaneous values generated by the generating unit. The filtering unit can assign a plurality of instantaneous values to an assignment range corresponding to one target data item, based on individual elements included in the instantaneous values.

Growing community of inventors

Kobe, Japan

Seiya Fujitsu