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Proceedings Paper

Fast reconstruction of instantaneous ISAR image based on FTFDS
Author(s): Zenghui Li; Feng He; Jubo Zhu; Diannong Liang
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Paper Abstract

Time-Frequency Distribution Series (TFDS), which achieves an effective balance between the time-frequency resolution and the cross-term interference, can effectively reconstruct complicated maneuver targets' instantaneous ISAR images. However, original algorithm is quite inefficient, and the approach to fast computation proposed in some literature cannot be directly applied to engineering. In this correspondence, a straightforward realizable two-dimensional filter is derived. Meanwhile, FTFDS, as the fast implementation of TFDS, is proposed based on the formula, and computational burden of FTFDS is analyzed theoretically and experimentally in detail. The analysis of FTFDS indicates that FTFDS makes a great advance of efficiency. As FTFDS fits parallel process, time-frequency analysis by FTFDS can be approximately carried out in real-time. Simulated data processing has shown that FTFDS is practical and valid in fast reconstruction of instantaneous ISAR imaging.

Paper Details

Date Published: 10 November 2007
PDF: 7 pages
Proc. SPIE 6795, Second International Conference on Space Information Technology, 67953O (10 November 2007); doi: 10.1117/12.774984
Show Author Affiliations
Zenghui Li, National Univ. of Defense Technology (China)
Feng He, National Univ. of Defense Technology (China)
Jubo Zhu, National Univ. of Defense Technology (China)
Diannong Liang, National Univ. of Defense Technology (China)

Published in SPIE Proceedings Vol. 6795:
Second International Conference on Space Information Technology
Cheng Wang; Shan Zhong; Jiaolong Wei, Editor(s)

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