| 摘要 |
<p>A method for environment recognition using at least one distance sensor that is capable of emitting a pulse 38, 38.1 with a defined transmission spectrum and receiving at least one signal in a measurement cycle Î T; the received signal is classified as an echo signal 40 or rejected as noise or interference 41 based on whether the received signal amplitude and phase lie within a plausible range. An interference signal may be detected as originating from an external source and its distance calculated and provided to a driving assistance system. The pulse transmitter is preferably ultrasonic but may be electromagnetic (radar, lidar or infra-red), and at least one parameter of the transmission spectrum may be varied in reaction to an interference signal. The method described may be carried out by a computer program or a driver assistance system in a vehicle.</p> |
