METHOD FOR FOCUSING THE RADAR DETECTION FOR A RELATIVE MOVEMENT
개요
출원인
Continental Autonomous Mobility Germany GmbH
발명자
Markus Wintermantel
IPC 분류
CPC 분류
A method for detecting the environment of a vehicle with a radar system comprises modulating the frequency of emitted transmission signals to include a sequence of frequency ramps. A signal with a current transmission frequency is mixed with transmission signals reflected by objects. An output signal of the mixture is scanned during each of the frequency ramps. After preprocessing a two-dimensional discrete time-frequency transformation over the scanning values is determined. Dependent on the vehicle movement, the preprocessing of the scanning values includes a frequency shift of the signal formed from the scanning values such that the frequency of the signals formed by the scanning values respectively remains unchanged over the frequency ramps for objects with a defined radial relative movement. Thus, fuzziness of power peaks generated by such objects is counteracted in the two-dimensional time-frequency transformation.
원문 (중국어)
A method for detecting the environment of a vehicle with a radar system comprises modulating the frequency of emitted transmission signals to include a sequence of frequency ramps. A signal with a current transmission frequency is mixed with transmission signals reflected by objects. An output signal of the mixture is scanned during each of the frequency ramps. After preprocessing a two-dimensional discrete time-frequency transformation over the scanning values is determined. Dependent on the vehicle movement, the preprocessing of the scanning values includes a frequency shift of the signal formed from the scanning values such that the frequency of the signals formed by the scanning values respectively remains unchanged over the frequency ramps for objects with a defined radial relative movement. Thus, fuzziness of power peaks generated by such objects is counteracted in the two-dimensional time-frequency transformation.