Title :
Electromagnetic phenomenology studies using a data-adaptive time-frequency representation
Author :
Moghaddar, Ali ; Walton, Eric K.
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
An adaptive time-frequency representation (TFR) based on a non-uniform tiling of the time-frequency plane is presented and applied to several radar scatterers. In the proposed TFR, several focusing times can be selected according to the local (non-dispersive) features of the data. The maximum available frequency band is utilized to provide good time-resolution for points close to the focusing points. As one moves away the focusing points, the utilized bandwidth is reduced to accommodate good frequency-resolution capability
Keywords :
adaptive signal processing; electromagnetic wave scattering; radar cross-sections; radar signal processing; signal representation; time-frequency analysis; data-adaptive time-frequency representation; electromagnetic phenomenology studies; focusing times; frequency-resolution; local features; maximum available frequency band; nondispersive features; nonuniform tiling; radar scatterers; time-frequency plane; time-resolution; utilized bandwidth; Bandwidth; Electromagnetic scattering; Fourier transforms; Geometry; Laboratories; Radar scattering; Scattering parameters; Time domain analysis; Time frequency analysis; Wavelet domain;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1994., Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-2127-8
DOI :
10.1109/TFSA.1994.467312
