Joint PAZ and Tandem-X Missions Interferometric Performance

Alonso-González, Alberto; Hajnsek, Irena; Grigorov, Christo; Roth, Achim; Marschalk, Ursula; Martinez, Nuria Gimeno; Revenga, Patricia Cifuentes; Bonilla, Maria Jose Gonzalez; Vazquez, Nuria Casal; Cuerda, J. M.; Rodriguez, Marc

doi:10.1109/igarss47720.2021.9554501

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Spain also has an important Earth observation program, which includes the PAZ satellite (Alonso- Gonzalez et al, 2021). PAZ is an X-Band SAR satellite based on the German TerraSAR-X.…”

Section: Current and Future Sar Missionsmentioning

confidence: 99%

Missions actuelles en télédétection par radar à synthèse d’ouverture, et applications

Glaude¹,

Orban²

2022

BSGLg

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The present paper provides an overview of Synthetic Aperture Radar (SAR) remote sensing concepts. SAR remote sensing is a coherent active imaging technique, where the spaceborne sensor emits an electromagnetic wave and captures its backscattered signal. Each pixel contains amplitude information, witness of the ground properties to reflect the signal back to the sensor, and a phase component, which is related to the distance from the sensor to the ground target. Firstly, we will focus on SAR and SAR interferometry concepts. The acquisition geometry, the different wavelengths, the issue of spatial resolution, the polarization; SAR has a number of differences compared to optical remote sensing. In addition, the coherent imaging technique allows the exploitation of the phase information, with applications such as DEM generation or surface displacements retrieval. In a second part, we will discuss the current and future SAR constellations as well as recent advances in applications coming from the deep learning field. The domain of SAR remote sensing is a rapidly evolving field, where more and more satellites are being set up and where the private sector is investing massively. Service-oriented market using small X-Band SAR satellites is getting more and more present. In parallel, public institutions already have several important SAR satellites and are currently preparing the next generation, with improved technical specifications.

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“…Spain also has an important Earth observation program, which includes the PAZ satellite (Alonso- Gonzalez et al, 2021). PAZ is an X-Band SAR satellite based on the German TerraSAR-X.…”

Section: Current and Future Sar Missionsmentioning

confidence: 99%

Missions actuelles en télédétection par radar à synthèse d’ouverture, et applications

Glaude¹,

Orban²

2022

BSGLg

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“…However, costs of installation and maintenance as well as difficult and hazardous terrain make ground‐based observations close to eruptive vents rare (Pritchard, Biggs, et al., 2018; Salzer et al., 2014). These signals, lasting seconds to hours, have largely evaded InSAR detection because inflation and deflation happen within the orbit repeat time, which is currently ≥1 day(s) (e.g., CSK, ICEYE: 1 day, Sentinel‐1: 6 or 12 days, TSX: 11 days, down to 4 days in combination with PAZ (Alonso–González et al., 2021)). Steep slopes and surface changes due to snow and ash deposits limit the use of InSAR near eruptive vents because of a loss in coherence (Pinel et al., 2014; Wang et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

High‐Resolution InSAR Reveals Localized Pre‐Eruptive Deformation Inside the Crater of Agung Volcano, Indonesia

et al. 2023

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Localized deformation at volcanoes is caused by shallow processes including magma movement, pressurization of a hydrothermal system, or instability of the edifice, and is often observed shortly before or during an eruption (Cassidy et al., 2019). Thus, observing localized deformation is critical for understanding the final stages of magma ascent and eruption forecasting. However, sufficiently frequent and dense spatial observations are rarely available from ground-based instrument networks. High-resolution Interferometric Synthetic Aperture Radar (InSAR) can achieve <1 m spatial resolution and sub-weekly observations (e.g., COSMO-Skymed (CSK) (Italiana, 2007), TerraSAR-X (TSX) (Mittermayer et al., 2014), and ICEYE (Ignatenko et al., 2020)), making it an excellent tool for the detection, monitoring, and understanding of localized volcano deformation. For example,

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Focusing of Wide-Swath Range Sweep SAR With Extended Wide Nonlinear Chirp Scaling Algorithm

Liu

2023

IEEE Trans. Geosci. Remote Sensing

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Joint PAZ and Tandem-X Missions Interferometric Performance

Cited by 3 publications

References 2 publications

Missions actuelles en télédétection par radar à synthèse d’ouverture, et applications

Missions actuelles en télédétection par radar à synthèse d’ouverture, et applications

High‐Resolution InSAR Reveals Localized Pre‐Eruptive Deformation Inside the Crater of Agung Volcano, Indonesia

Focusing of Wide-Swath Range Sweep SAR With Extended Wide Nonlinear Chirp Scaling Algorithm

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