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Identification and Removal of Ground Echoes and Anomalous Propagation Using the Characteristics of Radar Echoes

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  • 1 Department of Astronomy and Atmospheric Sciences, KyungPook National University, Taegu, Korea
  • | 2 J. S. Marshall Radar Observatory, Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, Canada
  • | 3 Department of Astronomy and Atmospheric Sciences, KyungPook National University, Taegu, Korea
  • | 4 J. S. Marshall Radar Observatory, Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, Canada
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Abstract

This paper explores the removal of normal ground echoes (GREs) and anomalous propagation (AP) in ground-based radars using a fuzzy logic approach. Membership functions and their weights are derived from the characteristics of radar echoes as a function of radar reflectivity. The dependence on echo intensity is shown to significantly improve the proper identification of GRE/AP. In addition, the proposed method has a better performance at lower elevation angles. The overall performance is comparable with that from a polarimetric approach and can thus be easily implemented in operational radars.

Corresponding author address: Dr. GyuWon Lee, J. S. Marshall Radar Observatory, McGill University, P.O. Box 198, Macdonald Campus, Ste-Anne de Bellevue, Montreal QC H9X 3V9, Canada. Email: gyuwon.lee@mail.mcgill.ca

Abstract

This paper explores the removal of normal ground echoes (GREs) and anomalous propagation (AP) in ground-based radars using a fuzzy logic approach. Membership functions and their weights are derived from the characteristics of radar echoes as a function of radar reflectivity. The dependence on echo intensity is shown to significantly improve the proper identification of GRE/AP. In addition, the proposed method has a better performance at lower elevation angles. The overall performance is comparable with that from a polarimetric approach and can thus be easily implemented in operational radars.

Corresponding author address: Dr. GyuWon Lee, J. S. Marshall Radar Observatory, McGill University, P.O. Box 198, Macdonald Campus, Ste-Anne de Bellevue, Montreal QC H9X 3V9, Canada. Email: gyuwon.lee@mail.mcgill.ca

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