| 摘要 |
The method involves producing a reference signal comprising reference frequency, and displacing the reference frequency against transmission frequency around a predetermined intermediate frequency. The intermediate frequency is generated by mixing the transmission frequency and the produced reference frequency. A transmission signal (Tx) is sent in a direction of a measuring object (104), and a receiving signal (Rx) reflected at the object is received. An intermediate frequency signal is produced by mixing the receiving signal with the reference signal, and the intermediate signal is provided. An independent claim is also included for a device for providing a reflection signal as an intermediate frequency signal. |
