SWRA662A January   2020  – September 2022 AWR1243 , AWR1443 , AWR1642 , AWR1843 , AWR1843AOP , AWR2243 , AWR6843 , AWR6843AOP , IWR1443 , IWR1642 , IWR1843 , IWR6443 , IWR6843 , IWR6843AOP

 

  1.   Interference Mitigation For AWR/IWR Devices
  2.   Trademarks
  3. 1Introduction
  4. 2Types of Interference in FMCW Radar
    1. 2.1 FMCW Radar
    2. 2.2 The Radar Equation for Interference
    3. 2.3 Types of Interference
      1. 2.3.1 Crossing Interference
      2. 2.3.2 Performance Analysis for Crossing Interference
      3. 2.3.3 Parallel Interference
      4. 2.3.4 Between Crossing and Parallel Interference
  5. 3Interference Avoidance
    1. 3.1 Standardization: Different Frequency Band and Time Slot for Different Radars
    2. 3.2 Different Starting Time for Parallel Interference
    3. 3.3 Sensing and Avoidance
    4. 3.4 Antenna Polarization
  6. 4Localization and Interference Mitigation
    1. 4.1 Localization
    2. 4.2 Mitigation
  7. 5Dithering and Randomization
  8. 6Conclusion
  9. 7References
  10. 8Revision History

2.3.4 Between Crossing and Parallel Interference

Crossing interference happens often, but only affects a small number of samples in the chirp, while parallel interference happens rarely, but affects almost the whole chirp; thus, as the chirp slope difference gets smaller, the glitch gets longer, but the crossing probability decreases.