Bistatic SAR Image Formation and Interferometric Processing for the Stereoid Earth Explorer 10 Candidate Mission

Prats-Iraola, Pau; Pinheiro, Muriel; Rodríguez-Cassolà, Marc; Scheiber, Rolf; López‐Dekker, Paco

doi:10.1109/igarss.2019.8897930

Cited by 5 publications

(2 citation statements)

References 11 publications

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“…This study provides an experimental base for future investigations in the development of geophysical model functions and the design of satellite missions such as Harmony [32], that aim at attaining the long desired high resolution characteristics of the upper ocean dynamics.…”

Section: Discussionmentioning

confidence: 99%

Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data

Caldarella

López‐Dekker

Prats-Iraola

et al. 2022

IEEE Trans. Geosci. Remote Sensing

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Observations of wind-and ocean surface velocity vectors by Along-Track Interferometry (ATI) with the Synthetic Aperture Radar (SAR) are not only important for direct applications, but also to increase understandings of ocean upper-layer mixing, air-ocean interactions, and mapping submesoscale (1-10 km) structures. Experimental Bidirectional(BiDi) ATI acquisition mode of TanDEM-X observes with two squinted beams separated by an angle of approximately 13.2 degree in azimuth on the ground. The baseline is very short, and the ATI phase of the ocean surface in line-of-sight direction of the beams can be interpreted as a total Doppler velocity. The 2-dimensional Doppler velocity field will thus include wind wave detected motions. In this paper, Doppler velocity fields acquired from this experimental acquisition mode are presented. The sequential retrieval of wind-and total surface current vectors is demonstrated on the bidirectional TanDEM-X data. The retrieval algorithm builds on existing Geophysical Model Functions (GMF) of NRCS and Doppler velocity. XMOD2 and a GMF based on the Elfouhaily Ocean Wave Spectrum coupled with a Kirchhoff Approximation (EOWS&KA) are used respectively. The retrieved wind fields are generally consistent with ECMWF ERA-5. Where the ATI phase errors are small, the retrieved TSCV field looks promising. Acquisitions were located at sea over the tip of the Novaya Zemlya in Russia and over an area near Tromsø, Norway.

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Section: Discussionmentioning

confidence: 99%

Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data

Caldarella

López‐Dekker

Prats-Iraola

et al. 2022

IEEE Trans. Geosci. Remote Sensing

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“…Spaceborne interferometric synthetic aperture radar (InSAR) is an effective approach to obtain high-resolution and highprecision digital elevation model (DEM) data, which is currently a popular research field in earth remote sensing [1][2][3][4][5]. There are three means for spaceborne InSAR: repeat pass InSAR [6], single LEO InSAR satellite with dual antenna [7] and LEO formation InSAR satellites [8].…”

Section: Introductionmentioning

confidence: 99%

Fast geolocation solution for bistatic interferometric synthetic aperture radar configuration of inclined geosynchronous transmitter with low earth orbit receivers

Dai

Tian

Suo

2023

IET Radar Sonar & Navi

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Spaceborne interferometric synthetic aperture radar (InSAR) technology is an effective method to obtain digital elevation model (DEM) data. The bistatic InSAR configuration of the inclined-geosynchronous (InGEO) transmitter with low earth orbit (LEO) receivers (InGEO-LEO) is a novel InSAR system to acquire terrain information. This novel system is characterised with high resolution, wide swath and timeliness, but the Newton iterative method is time-consuming to solve the bistatic InSAR equations for fast DEM generation. For the conventional LEO bistatic InSAR system, the closed-form solution is an effective method to improve the efficiency of solving InSAR equations, which is invalid in the InGEO-LEO InSAR system because of the significant geometry difference caused by the orbits of InGEO transmitter and LEO receivers. To address this issue, we analyse the bistatic InGEO-LEO geometry in detail and exploit the bistatic InSAR equations to propose an approximate closed-form solution (ACS) for the novel system. Compared with the general Newton iterative method, the ACS significantly improves the efficiency of geolocation for the bistatic InGEO-LEO InSAR system with high precision. Simulation experiments are carried out to verify the effectiveness and superiority of ACS.

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Dual Satellite Bistatic SAR Constellation Mission for SDGs

Wang,

Jiang,

et al. 2023

2023 SAR in Big Data Era (BIGSARDATA)

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Bistatic SAR Image Formation and Interferometric Processing for the Stereoid Earth Explorer 10 Candidate Mission

Cited by 5 publications

References 11 publications

Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data

Retrieval of Wind and Total Surface Current Vectors Using Experimental Bidirectional Along-Track Interferometric TanDEM-X Data

Fast geolocation solution for bistatic interferometric synthetic aperture radar configuration of inclined geosynchronous transmitter with low earth orbit receivers

Dual Satellite Bistatic SAR Constellation Mission for SDGs

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