Back to Search
Start Over
ISAR Imaging of Maneuvering Target Based on the L-Class of Fourth-Order Complex-Lag PWVD.
- Source :
-
IEEE Transactions on Geoscience & Remote Sensing . Mar2010 Part 1 of 2, Vol. 48 Issue 3, p1518-1527. 10p. 4 Diagrams, 1 Chart, 7 Graphs. - Publication Year :
- 2010
-
Abstract
- In inverse synthetic aperture radar (ISAR) imaging of a maneuvering target, the received signal in a range bin can be characterized as a multicomponent polynomial phase signal (PPS) after motion compensation. The traditional discrete Fourier transform algorithm is not appropriate in analyzing the PPS. In this paper, the L-class of a fourth-order complex-lag polynomial Wigner--Ville distribution (PWVD) is presented to generate a high-resolution time--frequency distribution (TFD) for the multicomponent PPS. For a signal with polynomial phase up to order four (this is accurate enough in ISAR imaging), the cross-terms between different components can be reduced by the convolution in the frequency domain of the L-class of the fourth-order complex- lag PWVD. The new TFD is used in the ISAR imaging of the maneuvering target, and high-quality instantaneous ISAR images are obtained. Results of simulated and real data demonstrate the effectiveness of the method above. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01962892
- Volume :
- 48
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Geoscience & Remote Sensing
- Publication Type :
- Academic Journal
- Accession number :
- 48647808
- Full Text :
- https://doi.org/10.1109/TGRS.2009.2032296