Radar apparatus
AssigneeDENSO TEN Limited
InventorsShinya Aoki, Seiya Fujitsu
Life of this patent
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Abstract
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.
Claims10
A radar apparatus that detects objects in a vicinity of a host vehicle on which the radar apparatus is mounted, the radar apparatus comprising a microcomputer configured to operate as:
- a prediction processor that calculates a prediction position of a previously detected target for a time corresponding to a current detection cycle of the radar apparatus, based on position information of the previously detected target obtained during a previous detection cycle of the radar apparatus;
- 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, wherein
- the extrapolation processor:
- (i) 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;
- and (ii) does not execute the extrapolation when the prediction position is outside the detection range of the radar apparatus and the speed of the host vehicle is greater than the predetermined value.
A signal processing method executed by a microcomputer of a radar apparatus having a signal transmitting antenna and a signal receiving antenna, and that detects objects in a vicinity of a host vehicle on which the radar apparatus is mounted, the method comprising the steps of:
- (a) calculating, by the microcomputer, a prediction position of a previously detected target for a time corresponding to a current detection cycle of the radar apparatus, based on position information of the previously detected target obtained during a previous detection cycle of the radar apparatus;
- and
- (b) executing, by the microcomputer, an extrapolation to determine that a same target as the previously detected target exists in the prediction position for the current detection cycle, wherein
- the step (b) (i) 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;
- and (ii) does not execute the extrapolation when the prediction position is outside the detection range of the radar apparatus and the speed of the host vehicle is greater than the predetermined value.
Dependencies are inferred from the claim text.