Implementation of the Time-Frequency Distribution Series for SAR Applications

Joint Time Frequency Analysis (JTFA) of SAR imagery is a natural generalization of the sub-aperture image processing used by the remote sensing community for years. At the heart of this process is the Time-Frequency Representations (TFR’s) such as the Wigner-Ville (WV) transform, which is difficult to use because of its large cross-product terms. The Time-Frequency Distribution Series (TFDS) mitigates the cross product terms by averaging in only those terms close to the signal. However, designing an efficient implementation of this series is not easy. Some of the details are explained and an example of a SAR application given. Keywordsjoint time-frequency analysis, JTFS, SAR, WignerVille Transfom, time-frequency distribution series, TFDS.

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