Loading patent…
AssigneeDenso Corporation
InventorYukimasa Tamatsu
Estimating the term…
A radar wave reflected by a preceding automotive vehicle is received. The distance and the reception level of the received radar wave are repeatedly stored with relation therebetween. The reception levels are plotted with respect to distance. The distribution of the receptions levels is approximated with a linear equation as the characteristic of the radar apparatus. Variation in the distribution, that is, Y intercept of the linear equation represents the variation of the characteristic of the radar apparatus. A reference characteristic of the radar is measured with changing the distance to the preceding reflective object and the measured characteristic is measured with a moving preceding vehicle during actual traveling. The reference Y intercept is compared with the measured Y intercept to detect the deviation. Further, the divination amount or the measured value is classified to judge the cause of decries in the characteristic using conditional signals.
A method of detecting a characteristic of a radar apparatus for a vehicle on the basis of data of an object obtained by said radar apparatus, said data including distance data of said object and a level of a radar signal reflected by said object and received by said radar apparatus, comprising the steps of:
A radar apparatus characteristic detection apparatus detecting a characteristic of a radar apparatus for a vehicle on the basis of data of an object obtained by said radar apparatus, said data including distance data of said object and a level of a radar signal reflected by said object and received by said radar apparatus, comprising:
A recording medium for recording processing in detecting a characteristic of a radar apparatus for a vehicle on the basis of data of an object obtained by said radar apparatus, said data including distance data of said object and a level of a radar signal reflected by said object and received by said radar apparatus, said processing including the steps of:
Dependencies are inferred from the claim text.