Coordinate Transformation by Nearest Neighbor Interpolation for ISAR Fixed Scene Imaging
Summary :
The reflection signal in the inverse synthetic aperture radar is measured in the polar coordinate defined by the object rotation angle and the frequency. The reconstruction of fixed scene images requires the coordinate transformation of the polar format data into the rectangular spatial frequency domain, which is then processed by the inverse Fourier transform. In this paper a fast and flexible method of coordinate transformation based on the nearest neighbor interpolation utilizing the Delauney triangulation is at first presented. Then, the induced errors in the transformed rectangular spatial frequency data and the resultant fixed scene images are investigated by simulation under the uniform plane wave transmit-receive mode over the swept frequency 120-160 GHz, and the results which demonstrate the validity of the current coordinate transformation are presented.
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- IEICE TRANSACTIONS on Electronics Vol.E84-C No.12 pp.1905-1909
- Publication Date
- 2001/12/01
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- Special Section PAPER (Special Issue on New Technologies in Signal Processing for Electromagnetic-wave Sensing and Imaging)
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Koichi SASAKI, Masaru SHIMIZU, Yasuo WATANABE, "Coordinate Transformation by Nearest Neighbor Interpolation for ISAR Fixed Scene Imaging" in IEICE TRANSACTIONS on Electronics,
vol. E84-C, no. 12, pp. 1905-1909, December 2001, doi: .
Abstract: The reflection signal in the inverse synthetic aperture radar is measured in the polar coordinate defined by the object rotation angle and the frequency. The reconstruction of fixed scene images requires the coordinate transformation of the polar format data into the rectangular spatial frequency domain, which is then processed by the inverse Fourier transform. In this paper a fast and flexible method of coordinate transformation based on the nearest neighbor interpolation utilizing the Delauney triangulation is at first presented. Then, the induced errors in the transformed rectangular spatial frequency data and the resultant fixed scene images are investigated by simulation under the uniform plane wave transmit-receive mode over the swept frequency 120-160 GHz, and the results which demonstrate the validity of the current coordinate transformation are presented.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e84-c_12_1905/_p
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@ARTICLE{e84-c_12_1905,
author={Koichi SASAKI, Masaru SHIMIZU, Yasuo WATANABE, },
journal={IEICE TRANSACTIONS on Electronics},
title={Coordinate Transformation by Nearest Neighbor Interpolation for ISAR Fixed Scene Imaging},
year={2001},
volume={E84-C},
number={12},
pages={1905-1909},
abstract={The reflection signal in the inverse synthetic aperture radar is measured in the polar coordinate defined by the object rotation angle and the frequency. The reconstruction of fixed scene images requires the coordinate transformation of the polar format data into the rectangular spatial frequency domain, which is then processed by the inverse Fourier transform. In this paper a fast and flexible method of coordinate transformation based on the nearest neighbor interpolation utilizing the Delauney triangulation is at first presented. Then, the induced errors in the transformed rectangular spatial frequency data and the resultant fixed scene images are investigated by simulation under the uniform plane wave transmit-receive mode over the swept frequency 120-160 GHz, and the results which demonstrate the validity of the current coordinate transformation are presented.},
keywords={},
doi={},
ISSN={},
month={December},}
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TY - JOUR
TI - Coordinate Transformation by Nearest Neighbor Interpolation for ISAR Fixed Scene Imaging
T2 - IEICE TRANSACTIONS on Electronics
SP - 1905
EP - 1909
AU - Koichi SASAKI
AU - Masaru SHIMIZU
AU - Yasuo WATANABE
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E84-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2001
AB - The reflection signal in the inverse synthetic aperture radar is measured in the polar coordinate defined by the object rotation angle and the frequency. The reconstruction of fixed scene images requires the coordinate transformation of the polar format data into the rectangular spatial frequency domain, which is then processed by the inverse Fourier transform. In this paper a fast and flexible method of coordinate transformation based on the nearest neighbor interpolation utilizing the Delauney triangulation is at first presented. Then, the induced errors in the transformed rectangular spatial frequency data and the resultant fixed scene images are investigated by simulation under the uniform plane wave transmit-receive mode over the swept frequency 120-160 GHz, and the results which demonstrate the validity of the current coordinate transformation are presented.
ER -
English
