A stochastic model for prediction and avoidance of RF interference to cognitive radars

Jacob A. Kovarskiy, Ram M. Narayanan, Anthony F. Martone, Kelly D. Sherbondy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations


This work presents a real-time implementation of a cognitive radar system that predicts and avoids interference using a stochastic model of radio frequency (RF) activity. Next-generation radar/radio systems must sense, predict, and avoid interference as the spectrum grows more crowded. The tested cognitive radar monitors the RF environment to estimate the stochastic model parameters followed by a prediction and avoidance stage. An alternating renewal process models RF activity with random busy and idle time distributions, which are used to obtain interference probabilities. These interference probabilities determine a radar transmit bandwidth and center frequency to avoid colliding with other emitters in the environment. The approach is evaluated in terms of collisions and missed opportunities on a set of simulated and real measured RF spectra. Additionally, this paper outlines the effects and complexity of utilizing different distributions, parameters, and modes of operation for the implemented radar system. The results suggest that this approach accurately predicts and avoids RF interference with a degradation in performance as model variance increases.

Original languageEnglish (US)
Title of host publication2019 IEEE Radar Conference, RadarConf 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728116792
StatePublished - Apr 2019
Event2019 IEEE Radar Conference, RadarConf 2019 - Boston, United States
Duration: Apr 22 2019Apr 26 2019

Publication series

Name2019 IEEE Radar Conference, RadarConf 2019


Conference2019 IEEE Radar Conference, RadarConf 2019
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation


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