Clutter identification based on kernel density estimation and sparse recovery

Conference · Tue May 01 00:00:00 EDT 2018

OSTI ID:1439142

Wang, Haokun ^[1]; Xiang, Yijian ^[2]; Dagois, Elise ^[1]; Kelsey, Malia ^[1]; Sen, Satyabrata  ^[3]; Nehorai, Arye ^[2]; Akcakaya, Murat ^[1]

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1. University of Pittsburgh
2. Washington University, St. Louis
3. ORNL

A cognitive radar framework is being developed to dynamically detect changes in the clutter characteristics, and to adapt to these changes by identifying the new clutter distribution. In our previous work, we have presented a sparse-recovery based clutter identification technique. In this technique, each column of the dictionary represents a specific distribution. More specifically, calibration radar clutter data corresponding to a specific distribution is transformed into a distribution through kernel density estimation. When the new batch of radar data arrives, the new data is transformed to a distribution through the same kernel density estimation method and its distribution characteristics is identified through sparse-recovery. In this paper, we extend our previous work to consider different kernels and kernel parameters for sparse-recovery-based clutter identification and the numerical results are presented as well. The impact of different kernels and kernel parameters are analyzed by comparing the identification accuracy of each scenario.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1439142
• Resource Relation: Conference: SPIE Defense and Commercial Sensing (DCS 2018) - Orlando, Florida, United States of America - 4/15/2018 8:00:00 AM-4/19/2018 8:00:00 AM
• Country of Publication: United States
• Language: English