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View article: Science objective and status of the EnVision Mission to Venus
Science objective and status of the EnVision Mission to Venus Open
EnVision is ESA’s next mission to Venus, in partnership with NASA, where NASA provides the Synthetic Aperture Radar payload and mission support. The ESA mission adoption is scheduled for January 2024, and the launch for 2031. The sta…
View article: A Generalized Beta Prime Distribution as the Ratio Probability Density Function for Change Detection Between Two SAR Intensity Images With Different Number of Looks
A Generalized Beta Prime Distribution as the Ratio Probability Density Function for Change Detection Between Two SAR Intensity Images With Different Number of Looks Open
In the framework of the comparison of synthetic aperture radar (SAR) imagery from the Magellan space mission and the VISAR and VenSAR radar instruments which will be onboard the forthcoming VERITAS and EnVision missions to Venus, the probl…
View article: Comment on essd-2021-172
Comment on essd-2021-172 Open
Abstract. Permafrost-affected ecosystems of the Arctic-boreal zone in northwestern North America are undergoing profound transformation as a result of rapid climate change. NASA’s Arctic Boreal Vulnerability Experiment (ABoVE) is investiga…
View article: The ABoVE L-band and P-band Airborne SAR Surveys
The ABoVE L-band and P-band Airborne SAR Surveys Open
Permafrost-affected ecosystems of the Arctic-boreal zone in northwestern North America are undergoing profound transformation as a result of rapid climate change. NASA’s Arctic Boreal Vulnerability Experiment (ABoVE) is investigating chara…
View article: EnVision: a Nominal Science Phase Spanning Six Venus Sidereal Days
EnVision: a Nominal Science Phase Spanning Six Venus Sidereal Days Open
EnVision was selected as ESA’s 5th M-class mission, targeting a launch in the early 2030s. The mission is a partnership between ESA and NASA, where NASA provides the Synthetic Aperture Radar payload. The scientific objective of EnVis…
View article: Testing the gravitational redshift with an inner Solar System probe: the VERITAS case
Testing the gravitational redshift with an inner Solar System probe: the VERITAS case Open
The NASA Discovery-class mission VERITAS, selected in June 2021, will be launched towards Venus after 2027. In addition to the science instrumentation that will build global foundational geophysical datasets, VERITAS proposed to conduct a …
View article: Analytical Models for Multipath and Switch Leakage for the SWOT Interferometer
Analytical Models for Multipath and Switch Leakage for the SWOT Interferometer Open
The Ka-Band Radar Interferometer (KaRIn) instrument on the Surface Water and Ocean Topography (SWOT) mission is a single-pass synthetic aperture radar (SAR) interferometer tasked with, among others, measuring ocean topography to within a f…
View article: EnVision: Understanding why Earth's closest neighbour is so different
EnVision: Understanding why Earth's closest neighbour is so different Open
EnVision is a proposed orbiter mission aiming at determining the nature and current state of Venus' geological evolution and its relationship with the atmosphere, to understand how and why Venus and Earth evolved so differently. It is is o…
View article: Are Titan's Lakes Liquid-filled?
Are Titan's Lakes Liquid-filled? Open
SAR imagery obtained during Cassini's T16 Titan fly-by revealed numerous radar-dark features at > ~70° N, interpreted to be lakes [1] on the basis of their low radar reflectivity, morphology and consistency with predictions [2]. Later fly-…
View article: The Shuttle Radar Topography Mission
The Shuttle Radar Topography Mission Open
The Shuttle Radar Topography Mission produced the most complete, highest-resolution digital elevation model of the Earth. The project was a joint endeavor of NASA, the National Geospatial-Intelligence Agency, and the German and Italian Spa…
View article: Title: The NASA AfriSAR Campaign: Airborne SAR and Lidar Measurements of Tropical Forest Structure and Biomass in Support of Future Space Missions
Title: The NASA AfriSAR Campaign: Airborne SAR and Lidar Measurements of Tropical Forest Structure and Biomass in Support of Future Space Missions Open
Earth and Space Science Open Archive This is a preprint and has not been peer reviewed. ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are…
View article: Habitability, Geodynamics, and the Case for Venus
Habitability, Geodynamics, and the Case for Venus Open
Geodynamics, like Earth’s plate tectonics (PT), governs long-term planetary evolution and habitability. Beyond Earth, only Venus may have key elements of PT: subduction (the 1st step in PT) and continents. Revealing Venus’ geodynamics is k…
View article: ABoVE: L1 S-0 Polarimetric Data from UAVSAR P-band SAR, Alaska and Canada, 2017
ABoVE: L1 S-0 Polarimetric Data from UAVSAR P-band SAR, Alaska and Canada, 2017 Open
This dataset provides Level 1 (L1) polarimetric radar backscattering coefficient (Sigma-0 or S-0), multi-look complex, polarimetrically calibrated, and georeferenced data products from the UAVSAR P-band SAR radar instrument collected over …
View article: VERITAS (Venus Emissivity, Radio Science, InSAR, Topography And Spectroscopy): A Proposed Discovery Mission
VERITAS (Venus Emissivity, Radio Science, InSAR, Topography And Spectroscopy): A Proposed Discovery Mission Open
VERITAS is a proposed Discovery mission concept, currently in Step 2 (Phase A), and would launch in 2026. VERITAS addresses one of the most fundamental questions in rocky planetary evolution: why did twin planets follow different evolution…
View article: The science goals of the EnVision Venus orbiter mission
The science goals of the EnVision Venus orbiter mission Open
If Venus were a newly discovered exoplanet, it would be one of the most Earth-like yet identified. Its similarity in size, bulk density and cloud top temperatures give no clue to the hellish temperatures at its surface. Venus hosts an arra…
View article: Single-Look SAR Tomography of Urban Areas
Single-Look SAR Tomography of Urban Areas Open
Synthetic aperture radar (SAR) tomography (TomoSAR) is a multibaseline interferometric technique that estimates the power spectrum pattern (PSP) along the perpendicular to the line-of-sight (PLOS) direction. TomoSAR achieves the separation…
View article: Mapping a Subsurface Water Channel with X-Band and C-Band Synthetic Aperture Radar at the Iron Age Archaeological Site of ‘Uqdat al-Bakrah (Safah), Oman
Mapping a Subsurface Water Channel with X-Band and C-Band Synthetic Aperture Radar at the Iron Age Archaeological Site of ‘Uqdat al-Bakrah (Safah), Oman Open
Subsurface imaging in arid regions is a well-known application of satellite Synthetic Aperture Radar (SAR). Archaeological prospection has often focused on L-band SAR sensors, given the ability of longer wavelengths to penetrate more deepl…
View article: Venus Interferometric Synthetic Aperture Radar (VISAR) for the Venus Origins Explorer
Venus Interferometric Synthetic Aperture Radar (VISAR) for the Venus Origins Explorer Open
One of the three primary science instruments for the proposed Venus Origins Explorer (VOX) mission to the NASA New Frontiers Program is an X-band radar interferometer. This radar is designed to provide improved reolution imagery and topogr…
View article: AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, MOISST, 2012-2015
AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, MOISST, 2012-2015 Open
This data set provides level 1 (L1) polarimetric radar backscattering coefficient (sigma-0), multilook complex, polarimetrically calibrated, and georeferenced data products from the Airborne Microwave Observatory of Subcanopy and Subsurfac…
View article: AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, Walnut Gulch, 2012-2015
AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, Walnut Gulch, 2012-2015 Open
This data set provides level 1 (L1) polarimetric radar backscattering coefficient (sigma-0), multilook complex, polarimetrically calibrated, and georeferenced data products from the Airborne Microwave Observatory of Subcanopy and Subsurfac…
View article: AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, Tonzi Ranch, 2012-2015
AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, Tonzi Ranch, 2012-2015 Open
This data set provides level 1 (L1) polarimetric radar backscattering coefficient (sigma-0), multilook complex, polarimetrically calibrated, and georeferenced data products from the Airborne Microwave Observatory of Subcanopy and Subsurfac…
View article: AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, Duke Forest, 2012-2015
AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, Duke Forest, 2012-2015 Open
This data set provides level 1 (L1) polarimetric radar backscattering coefficient (sigma-0), multilook complex, polarimetrically calibrated, and georeferenced data products from the Airborne Microwave Observatory of Subcanopy and Subsurfac…
View article: AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, Chamela, Mexico, 2012-2015
AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, Chamela, Mexico, 2012-2015 Open
This data set provides level 1 (L1) polarimetric radar backscattering coefficient (sigma-0), multilook complex, polarimetrically calibrated, and georeferenced data products from the Airborne Microwave Observatory of Subcanopy and Subsurfac…
View article: AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, BERMS, Canada, 2012-2015
AirMOSS: L1 S-0 Polarimetric Data from AirMOSS P-band SAR, BERMS, Canada, 2012-2015 Open
This data set provides level 1 (L1) polarimetric radar backscattering coefficient (sigma-0), multilook complex, polarimetrically calibrated, and georeferenced data products from the Airborne Microwave Observatory of Subcanopy and Subsurfac…
View article: NASADEM GLOBAL ELEVATION MODEL: METHODS AND PROGRESS
NASADEM GLOBAL ELEVATION MODEL: METHODS AND PROGRESS Open
NASADEM is a near-global elevation model that is being produced primarily by completely reprocessing the Shuttle Radar Topography Mission (SRTM) radar data and then merging it with refined ASTER GDEM elevations. The new and improved SRTM e…
View article: VEM on VERITAS - Retrieval of global infrared surface emissivity maps of Venus and expectable retrieval uncertainties
VEM on VERITAS - Retrieval of global infrared surface emissivity maps of Venus and expectable retrieval uncertainties Open
Even though Venus is in many respects the most Earth-like planet we know today, its surface composition and
\ngeology are not well understood yet. The major obstacle is the extremely dense, hot, and opaque atmosphere
\nthat complicates bot…
View article: JOG volume 62 issue 231 Cover and Front matter
JOG volume 62 issue 231 Cover and Front matter Open
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