EXPLOITATION OF SINGLE-CHANNEL SPACE-BORNE SAR DATA FOR SHIP TARGETS IMAGING AND MOTION PARAMETERS ESTIMATION

被引：0
|
作者：
Testa, A. [1 ]
Pastina, D. [1 ]
Zavagli, M. [2 ]
Santi, F. [1 ]
Pratola, C. [3 ]
Corvino, M. [4 ]
机构：
[1] Sapienza Univ Rome, DIET Dept, Rome, Italy
[2] B Open Solut Srl, Rome, Italy
[3] E GEOS, Rome, Italy
[4] ESRIN, ESA, Frascati, Italy
来源：
2023 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING WORKSHOPS, ICASSPW | 2023年
关键词：
Radar imaging; moving targets; inverse synthetic aperture radar (ISAR); synthetic aperture radar (SAR); MOVING TARGETS;
D O I：
10.1109/ICASSPW59220.2023.10193026
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Nowadays, space-borne Synthetic Aperture Radar (SAR) systems can provide images with very high-resolution, representing a formidable tool for maritime surveillance applications. Nevertheless, ship targets usually appear defocused in level-1 SAR images, due to their motion. Ship target refocusing can be achieved via Inverse SAR (ISAR) techniques, and a number of autofocus approaches have been proposed and tested in the past. However, the estimation of the full ship's dynamic (translation and rotation), is a strategic information, also providing the possibility to scale the images in the uniform range-cross-range plane. In this work, the effectiveness of suitable single-channel ISAR techniques at estimating the ship velocity and at correctly scaling the images is assessed by means of Cosmo-SkyMed (CSK) data exploiting the Automatic Identification System (AIS) information as the reference ground truth.
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页数：5
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