| 摘要 |
Method for detecting at least one object with the aid of ultrasonic signals reflected at this object, in which, by means of an ultrasonic sensor, echo signals which arise from reflection of ultrasonic signals emitted by means of the ultrasonic sensor are received. From each received echo signal, a corresponding received signal (e(t)) is generated by means of the ultrasonic sensor and by means of each received signal corresponding measuring signal (s(t)) is generated. Each measuring signal, in order to generate a corresponding correlation signal (X(t)), is correlated with a corresponding response signal F(Ï„), of a correlation filter. For each measuring signal, a corresponding correlation factor (R(t)) is determined in dependence on the corresponding correlation signal, a positive definite norm Ns of the corresponding measuring signal and a positive definite norm NF of the corresponding response signal and is evaluated in order to detect the at least one object. A further harmonic signal h(t) corresponding to the received signal may be used to mix with the received signal to generate a corresponding mixed, or measuring signal s(t). |
