Radar sensor
A radar sensor having a signal generating device which generates an outgoing signal as a radar signal that is to be emitted. The radar sensor also has a signal receiving device for receiving and processing received signals as reflected radar signals. The received signals can be processed with a prediction method in order to determine a predicted signal, which can be compared to the received signal in order to eliminate disruptions deviating therefrom.
1. A radar sensor comprising:
a signal generating device, which generates an outgoing signal as a radar signal that is to be emitted;
a signal receiving device for receiving and processing received signals as reflected radar signals, wherein the received signals include a signal curve,
wherein the received signals are processed with a prediction method in order to determine a predicted signal for the entire signal curve, with which the received signal is compared in order to reduced disruptions deviating therefrom.
2. A method for operating a radar sensor comprising the steps of:
providing the radar sensor with a signal generating device;
generating an outgoing signal via the signal generating device as a radar signal that is to be emitted;
providing the radar sensor with a signal receiving device;
receiving and processing received signals via the signal receiving device as reflected radar signals, wherein the received reflected radar signal includes a signal curve,
processing the received reflected radar signals with a prediction method in order to determine a predicted signal for the entire signal curve, which is compared with the received reflected radar signal in order to reduce disruptions deviating therefrom.
3. The method according to claim 2 , wherein the predicted signal is sinusoidal, and wherein the received reflected radar signal or a mixed received signal is similar to the predicted sinusoidal signal.
4. The method according to claim 2 wherein a linear predictive encoding is carried out.
5. The radar sensor according to claim 3 further comprising the step of detecting discontinuities in the received reflected radar signal or in the mixed received signal caused by interferences through evaluation of a prediction error.
6. The method according to claim 5 , wherein the prediction error is used as a test value for detecting the discontinuities in the received reflected radar signal or in the mixed received signal, and wherein an increase in the prediction error represents a discontinuity.
7. The method according to claim 5 wherein the prediction error is calculated based on a comparison of the actual signal amplitude with the predicted value of the signal amplitude.
8. The method according to claim 2 wherein a non-causal backward prediction is used in addition to a causal forward prediction.
9. The method according to claim 8 , wherein an amplitude value that is to be predicted is determined from a weighted averaging of two prediction results.