ACTIVE REFLECTORS FOR INTERFEROMETRIC SAR DEFORMATION MEASUREMENT

Abstract. This paper is focused on the design, implementation and testing of an active reflector, to be used to support deformation monitoring studies based on Synthetic Aperture Radar interferometry. The device is designed to work in C-band with Sentinel-1 data, operating at 5.405 GHz ± 50 MHz. A brief description of the active reflector is provided. It consists of two antennas and an amplifying section. The active reflector has been tested in different experiments. In this paper, we describe the experiment carried out in the Parc Mediterrani de la Tecnologia (Castelldefels, Barcelona). The result shows a strong correlation with temperature. A calibration test was carried out to experimentally derive a calibration curve to correct the effect of temperature on phase stability.

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Deformation information extraction method based on differential synthetic aperture radar interferometry

Journal of Intelligent & Fuzzy Systems ◽

10.3233/jifs-189016 ◽

2020 ◽

Vol 39 (4) ◽

pp. 5311-5318

Author(s):

Zhengquan Hu ◽

Yu Liu ◽

Xiaowei Niu ◽

Guoping Lei

Keyword(s):

Remote Sensing ◽

Synthetic Aperture Radar ◽

Adaptive Filtering ◽

Extraction Method ◽

Deformation Monitoring ◽

Radar Interferometry ◽

Synthetic Aperture ◽

Filtering Method ◽

Synthetic Aperture Radar Interferometry ◽

Aperture Radar

As aerospace technology, computer technology, network communication technology and information technology become more and more perfect, a variety of sensors for measurement and remote sensing are constantly emerging, and the ability to acquire remote sensing data is also continuously enhanced. Synthetic Aperture Radar Interferometry (InSAR) technology greatly expands the function and application field of imaging radar. Differential InSAR (DInSAR) developed based on InSAR technology has the advantages of high precision and all-weather compared with traditional measurement methods. However, DInSAR-based deformation monitoring is susceptible to spatiotemporal coherence, orbital errors, atmospheric delays, and elevation errors. Since phase noise is the main error of InSAR, to determine the appropriate filtering parameters, an iterative adaptive filtering method for interferogram is proposed. For the limitation of conventional DInSAR, to improve the accuracy of deformation monitoring as much as possible, this paper proposes a deformation modeling based on ridge estimation and regularization as a constraint condition, and introduces a variance component estimation to optimize the deformation results. The simulation experiment of the iterative adaptive filtering method and the deformation modeling proposed in this paper shows that the deformation information extraction method based on differential synthetic aperture radar has high precision and feasibility.

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Ground-based synthetic aperture radar interferometry for deformation monitoring: a case study at Geheyan Dam, China

Journal of Applied Remote Sensing ◽

10.1117/1.jrs.11.036030 ◽

2017 ◽

Vol 11 (03) ◽

pp. 1 ◽

Cited By ~ 5

Author(s):

Qihuan Huang ◽

Guido Luzi ◽

Oriol Monserrat ◽

Michele Crosetto

Keyword(s):

Synthetic Aperture Radar ◽

Deformation Monitoring ◽

Radar Interferometry ◽

Synthetic Aperture ◽

Synthetic Aperture Radar Interferometry ◽

Aperture Radar

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Design and Production of an InSAR Reflector and Applied Research in the Landslide Deformation Monitoring

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.556-562.2899 ◽

2014 ◽

Vol 556-562 ◽

pp. 2899-2902

Author(s):

Yi Teng Tu ◽

Peng Fei Tu ◽

Yong Jun Chen

Keyword(s):

Synthetic Aperture Radar ◽

Three Gorges Reservoir ◽

Applied Research ◽

Deformation Monitoring ◽

Radar Interferometry ◽

Synthetic Aperture ◽

Three Gorges ◽

Synthetic Aperture Radar Interferometry ◽

The Past ◽

Landslide Deformation

Over the past decade, the studies have been growing rapidly on application of Synthetic Aperture Radar Interferometry (InSAR) technology to landslide deformation monitoring. On the basis of InSAR ground reflector, the paper has improved the design, produced a new InSAR reflector and successfully applied to Three Gorges Reservoir Shuping Landslide deformation monitoring.

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