IEICE TRANSACTIONS on Communications
3-D Imaging Using SAR Tomography with Pi-SAR2-X Dataset
Summary :
SAR tomography is one of the methods that can perform 3-dimensional (3-D) imaging with multiple SAR datasets by using the Direction-of-arrival (DOA) estimation technique to estimate the height distribution of scatterers. Several reports on SAR tomography have been issued. However, experimental results of the SAR tomography by the Pi-SAR2-X, Japanese airborne SAR operated by the NICT, have not been reported yet. This paper is the first to report the results of experiments on the Japanese SAR platform. High-resolution 2-dimensional image can be obtained by the X-band SAR. However the image is generated by projecting 3-D objects in to a 2-D image plane, hence the target responses having the same slant-range distance locate at the same image pixel. This is well known as the layover problem. When we employ the X-band SAR tomography, we can obtain 3-D high-resolution images without the layover and also foreshortening problem. It will be useful for disaster damage monitoring, especially in urban areas. The main difficulty of the SAR tomography comes from the phase error caused by inaccurate flight-path data. In many cases, the dataset are preprocessed and compensated so as to parallelize their flight-path to carry out the phase calibration and the DOA estimation easily. However, it is often difficult for common users to obtain such preprocessed datasets. In this paper, we propose a simple calibration method by using a flat-surface area with known altitude. Experiments show that the proposed method is effective for the Pi-SAR2-X standard products without parallelized preprocessing or precise flight-path information.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E101-B No.2 pp.409-417
- Publication Date
- 2018/02/01
- Publicized
- 2017/08/22
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2017ISP0020
- Type of Manuscript
- Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016)
- Category
- Remote Sensing
Authors
Masanori GOCHO
Niigata~University
Hiroyoshi YAMADA
Niigata~University
Motofumi ARII
Mitsubishi Electric Corporation
Shoichiro KOJIMA
Applied Electromagnetic Research Institute
Ryoichi SATO
Niigata~University
Yoshio YAMAGUCHI
Niigata~University
Keyword
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Masanori GOCHO, Hiroyoshi YAMADA, Motofumi ARII, Shoichiro KOJIMA, Ryoichi SATO, Yoshio YAMAGUCHI, "3-D Imaging Using SAR Tomography with Pi-SAR2-X Dataset" in IEICE TRANSACTIONS on Communications,
vol. E101-B, no. 2, pp. 409-417, February 2018, doi: 10.1587/transcom.2017ISP0020.
Abstract: SAR tomography is one of the methods that can perform 3-dimensional (3-D) imaging with multiple SAR datasets by using the Direction-of-arrival (DOA) estimation technique to estimate the height distribution of scatterers. Several reports on SAR tomography have been issued. However, experimental results of the SAR tomography by the Pi-SAR2-X, Japanese airborne SAR operated by the NICT, have not been reported yet. This paper is the first to report the results of experiments on the Japanese SAR platform. High-resolution 2-dimensional image can be obtained by the X-band SAR. However the image is generated by projecting 3-D objects in to a 2-D image plane, hence the target responses having the same slant-range distance locate at the same image pixel. This is well known as the layover problem. When we employ the X-band SAR tomography, we can obtain 3-D high-resolution images without the layover and also foreshortening problem. It will be useful for disaster damage monitoring, especially in urban areas. The main difficulty of the SAR tomography comes from the phase error caused by inaccurate flight-path data. In many cases, the dataset are preprocessed and compensated so as to parallelize their flight-path to carry out the phase calibration and the DOA estimation easily. However, it is often difficult for common users to obtain such preprocessed datasets. In this paper, we propose a simple calibration method by using a flat-surface area with known altitude. Experiments show that the proposed method is effective for the Pi-SAR2-X standard products without parallelized preprocessing or precise flight-path information.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2017ISP0020/_p
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@ARTICLE{e101-b_2_409,
author={Masanori GOCHO, Hiroyoshi YAMADA, Motofumi ARII, Shoichiro KOJIMA, Ryoichi SATO, Yoshio YAMAGUCHI, },
journal={IEICE TRANSACTIONS on Communications},
title={3-D Imaging Using SAR Tomography with Pi-SAR2-X Dataset},
year={2018},
volume={E101-B},
number={2},
pages={409-417},
abstract={SAR tomography is one of the methods that can perform 3-dimensional (3-D) imaging with multiple SAR datasets by using the Direction-of-arrival (DOA) estimation technique to estimate the height distribution of scatterers. Several reports on SAR tomography have been issued. However, experimental results of the SAR tomography by the Pi-SAR2-X, Japanese airborne SAR operated by the NICT, have not been reported yet. This paper is the first to report the results of experiments on the Japanese SAR platform. High-resolution 2-dimensional image can be obtained by the X-band SAR. However the image is generated by projecting 3-D objects in to a 2-D image plane, hence the target responses having the same slant-range distance locate at the same image pixel. This is well known as the layover problem. When we employ the X-band SAR tomography, we can obtain 3-D high-resolution images without the layover and also foreshortening problem. It will be useful for disaster damage monitoring, especially in urban areas. The main difficulty of the SAR tomography comes from the phase error caused by inaccurate flight-path data. In many cases, the dataset are preprocessed and compensated so as to parallelize their flight-path to carry out the phase calibration and the DOA estimation easily. However, it is often difficult for common users to obtain such preprocessed datasets. In this paper, we propose a simple calibration method by using a flat-surface area with known altitude. Experiments show that the proposed method is effective for the Pi-SAR2-X standard products without parallelized preprocessing or precise flight-path information.},
keywords={},
doi={10.1587/transcom.2017ISP0020},
ISSN={1745-1345},
month={February},}
Copy
TY - JOUR
TI - 3-D Imaging Using SAR Tomography with Pi-SAR2-X Dataset
T2 - IEICE TRANSACTIONS on Communications
SP - 409
EP - 417
AU - Masanori GOCHO
AU - Hiroyoshi YAMADA
AU - Motofumi ARII
AU - Shoichiro KOJIMA
AU - Ryoichi SATO
AU - Yoshio YAMAGUCHI
PY - 2018
DO - 10.1587/transcom.2017ISP0020
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2018
AB - SAR tomography is one of the methods that can perform 3-dimensional (3-D) imaging with multiple SAR datasets by using the Direction-of-arrival (DOA) estimation technique to estimate the height distribution of scatterers. Several reports on SAR tomography have been issued. However, experimental results of the SAR tomography by the Pi-SAR2-X, Japanese airborne SAR operated by the NICT, have not been reported yet. This paper is the first to report the results of experiments on the Japanese SAR platform. High-resolution 2-dimensional image can be obtained by the X-band SAR. However the image is generated by projecting 3-D objects in to a 2-D image plane, hence the target responses having the same slant-range distance locate at the same image pixel. This is well known as the layover problem. When we employ the X-band SAR tomography, we can obtain 3-D high-resolution images without the layover and also foreshortening problem. It will be useful for disaster damage monitoring, especially in urban areas. The main difficulty of the SAR tomography comes from the phase error caused by inaccurate flight-path data. In many cases, the dataset are preprocessed and compensated so as to parallelize their flight-path to carry out the phase calibration and the DOA estimation easily. However, it is often difficult for common users to obtain such preprocessed datasets. In this paper, we propose a simple calibration method by using a flat-surface area with known altitude. Experiments show that the proposed method is effective for the Pi-SAR2-X standard products without parallelized preprocessing or precise flight-path information.
ER -
English
