Fmcw radar system and interference recognition method for fmcw radar systems

Abstract

An FMCW radar system is provided having a transceiver unit which is designed to transmit radar signals, which are modulated with the aid of at least one modulation parameter, and to receive radar signals, which are reflected from objects, and having an interference detector for detecting interferences in the received radar signals based on at least one frequency-dependent reception power threshold value corresponding to the particular modulation parameters, one of the modulation parameters being a modulation slope of the transmitted radar signal. An interference recognition method is also provided.

1 - 12 . (canceled) 
     
     
         13 . An FMCW radar system, comprising:
 a transceiver unit configured to transmit radar signals which are modulated according to at least one modulation parameter, and to receive radar signals which are reflected from objects; and   an interference detector configured to detect interferences in the received radar signals based on a comparison of reception power of the received radar signals to at least one frequency-dependent reception power threshold value, wherein the at least one frequency-dependent reception power threshold value is set based on at least one of a transmission power of the transceiver unit, an antenna output of the transceiver unit, a maximally occurring radar backscatter cross section of expected objects, a speed at which the FMCW radar system moves, and data of previously detected objects.   
     
     
         14 . The FMCW radar system as recited in  claim 13 , wherein the reception power threshold value is set based on at least one of the transmission power of the transceiver unit, and the antenna output of the transceiver unit. 
     
     
         15 . An interference recognition method for a FMCW radar system, comprising:
 providing an FMCW radar system, the system including a transceiver unit configured to transmit radar signals which are modulated according to at least one modulation parameter, and to receive radar signals which are reflected from objects, and an interference detector configured to detect interferences in the received radar signals based on a comparison of reception power of the received radar signals to at least one frequency-dependent reception power threshold value;   transmitting, by the transceiver unit, the radar signals which are modulated with the aid of at least one modulation parameter;   receiving, by the transceiver unit, the radar signals which are reflected from objects; and   detecting, by the interference detector, interferences in the received radar signals based on a comparison of reception power of the received radar signals to the at least one frequency-dependent reception power threshold value, wherein the at least one frequency-dependent reception power threshold value is set based on at least one of a transmission power of the transceiver unit, an antenna output of the transceiver unit, a maximally occurring radar backscatter cross section of expected objects, a speed at which the FMCW radar system moves, and data of objects detected previously by the FMCW radar system.   
     
     
         16 . The interference recognition method as recited in  claim 15 , wherein the reception power threshold value is set based on at least one of the transmission power of the transceiver unit and the antenna output of the transceiver unit.