Theoretical characterization of multi incidence angle and fully Polarimetric SAR data from rice paddies

Arii, Motofumi; Nishimura, Takeshi; Komatsu, Tomomi; Yamada, Hiroyoshi; Kobayashi, Tatsuharu; Kojima, Soichi; Umehara, Toshihiko

doi:10.1109/igarss.2016.7730481

Cited by 2 publications

(4 citation statements)

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“…Forward models generally have a high degree of freedom so that many parameters must be reasonably determined. For this purpose, a multiparametric SAR observation, where various observation conditions such as frequency, polarization and incidence angle are gradually varied in a wide range of each value during a short span of time, has been proposed [27][28][29][30][31][32][33][34][35][36]. Simulation parameters can be found by fitting the model to the series of data set obtained by the multiparametric SAR observation.…”

Section: Introductionmentioning

confidence: 99%

Review of the Comprehensive SAR Approach to Identify Scattering Mechanisms of Radar Backscatter from Vegetated Terrain

et al. 2019

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In a field of polarimetric synthetic aperture radar (SAR) remote sensing, various kinds of polarimetric decomposition techniques have been proposed. However, poor validations prevent them from operational applications. A true composition ratio of scattering mechanisms within a radar backscatter plays a key role. To overcome the issue, a novel comprehensive SAR approach to accurately identify a contribution of each scattering mechanism has been introduced. This is based on multiparametric SAR observation combined with a numerical model simulation. In this article, a comprehensive SAR approach is concisely reviewed to accelerate the research in this field. First, popular model-based polarimetric decompositions are introduced and their limitations are shown. Then, a behavior of scattering mechanisms is analyzed by the discrete scatterer model with some results using real multiparametric SAR data. A comprehensive SAR approach must be essential to realize an operational use of polarimetric SAR data.

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Section: Introductionmentioning

confidence: 99%

Review of the Comprehensive SAR Approach to Identify Scattering Mechanisms of Radar Backscatter from Vegetated Terrain

et al. 2019

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“…In order to meet requirements of omnidirectional observation, it is necessary to implement new research on SAR imaging systems. The multi-angle SAR imaging system has attracted considerable attention [2,3,4,5,6,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…When the target is observed from one angle, since it is occluded, or the scattering coefficient of the angle is low, the complete information of the target cannot be obtained, but multi-angle SAR observes the target from different angle, and it can obtain as much information as possible about the target. The current multi-angle SAR includes spotlight SAR [4], wide azimuth beam SAR [5] and multiple flight paths SAR [6] In the spotlight SAR, the antenna is steered to increase extend the synthetic time and to observe targets from different angles. In this mode, the azimuth bandwidth of the signal may greater than the PRF, which causes spectrum ambiguity and makes signal processing more complicated [4].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Multi-Angle SAR Imaging System and Method Based on an Ultrahigh Speed Platform

Chang

Tao

Sun

et al. 2019

Sensors

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Considering the difficulty of pulse repetition frequency (PRF) design in multi-angle SAR when using ultra-high speed platforms, a multi-angle SAR imaging system in a unified coordinate system is proposed. The digital multi-beamforming is used in the system and multi-angle SAR data can be obtained in one flight. Therefore, the system improves the efficiency of data recording. An improved range migration algorithm (RMA) is used for data processing, and imaging is made in a unified imaging coordinate system. The resolution of different view images is the same, and there is a fixed delay between the images. On this basis, the SAR image fusion is performed after image matching. The results of simulation and measured data confirm the effectiveness of the system and the method.

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Theoretical characterization of multi incidence angle and fully Polarimetric SAR data from rice paddies

Cited by 2 publications

References 1 publication

Review of the Comprehensive SAR Approach to Identify Scattering Mechanisms of Radar Backscatter from Vegetated Terrain

Review of the Comprehensive SAR Approach to Identify Scattering Mechanisms of Radar Backscatter from Vegetated Terrain

A Novel Multi-Angle SAR Imaging System and Method Based on an Ultrahigh Speed Platform

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