FMCW Radar Interference Detection via Frequency-Dependent Power Thresholds

The patent applies parameter changes by utilizing frequency-dependent reception power threshold values that are specifically adapted to different modulation parameters (such as modulation slope). By dynamically adjusting the threshold values based on the actual modulation parameters being used, the system can distinguish between genuine target signals and interference signals, thereby maintaining high detection precision while reducing susceptibility to interference from other radar systems operating in the same frequency range.

The patent applies local quality by implementing frequency-dependent reception power threshold values instead of using a single uniform threshold. Different frequency ranges have different threshold values optimized for their specific characteristics and expected signal strengths. This localized approach allows the system to maintain high interference detection accuracy in each frequency band while avoiding false detection of actual targets, as the thresholds are adapted to the local signal characteristics rather than applying a one-size-fits-all criterion.

The patent applies preliminary action by pre-calculating and storing frequency-dependent reception power threshold values for different modulation parameters before actual operation. During runtime, the system simply retrieves the appropriate threshold values based on the current modulation parameters and compares received signal powers against these pre-established thresholds. This eliminates the need for complex real-time calculations, reducing system complexity while maintaining high interference detection accuracy through the use of pre-optimized threshold values.