Time-frequency analysis of radar target backscatter

Christopher J. McCormack; Valdis V. Liepa; William J. Williams

doi:10.1117/12.211391

7 June 1995 Time-frequency analysis of radar target backscatter

Christopher J. McCormack, Valdis V. Liepa, William J. Williams

Proceedings Volume 2563, Advanced Signal Processing Algorithms; (1995) https://doi.org/10.1117/12.211391
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Studies of two orbiting spheres demonstrate the usefulness of time-frequency distributions for the analysis of radar signals. The spheres served as a simplified model for moving blades of an engine propeller or helicopter rotor. Illuminating the moving spheres with a continuous wave radar generated a backscatter signal which was difficult to interpret in either the time or the frequency domains. By applying the binomial distribution (a discrete time-frequency distribution) we could clearly associate each sphere with its corresponding doppler return. The binomial distribution provided a detailed view of the target dynamics, opening the way for target classification and identification. The structures and details available in the time- frequency domain were not readily exploited in the original signal representation.

Citation Download Citation

Christopher J. McCormack, Valdis V. Liepa, and William J. Williams "Time-frequency analysis of radar target backscatter", Proc. SPIE 2563, Advanced Signal Processing Algorithms, (7 June 1995); https://doi.org/10.1117/12.211391

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