Alberto Moreira
YOU?
Author Swipe
View article: Along-Track Deformation Retrieval Performance With the ROSE-L Multichannel SAR System Using Two-Look ScanSAR
Along-Track Deformation Retrieval Performance With the ROSE-L Multichannel SAR System Using Two-Look ScanSAR Open
A new generation of spaceborne synthetic aperture radar (SAR) systems with digital beamforming capabilities is currently under development. In particular, multiple azimuth channels provide access to a large Doppler bandwidth, which can be …
View article: Experimental Validation and Calibration of GNSS-Based Phase Synchronization for Bistatic and Multistatic SAR Missions
Experimental Validation and Calibration of GNSS-Based Phase Synchronization for Bistatic and Multistatic SAR Missions Open
This article addresses the critical issue of phase synchronization in multistatic synthetic aperture radar (SAR). We present the experimental validation of a global navigation satellite system (GNSS)-based synchronization technique planned…
View article: Relative Orbit Design and Optimization for Distributed SAR Formations
Relative Orbit Design and Optimization for Distributed SAR Formations Open
The effectiveness of swath and Doppler spectrum reconstruction algorithms in multistatic synthetic aperture radar (SAR) formations heavily relies on the precise relative positioning of each spacecraft. Ideally, a static array configuration…
View article: Spaceborne Synthetic Aperture Radar: Future Technologies and Mission Concepts
Spaceborne Synthetic Aperture Radar: Future Technologies and Mission Concepts Open
This paper provides an overview of the state of the art and future developments in spaceborne synthetic aperture radar (SAR). Today, we are experiencing a golden age of spaceborne SAR, with the number of satellites in orbit increasing rapi…
View article: Evaluation of MCP Correlation Algorithms Applied to Wind Data Series
Evaluation of MCP Correlation Algorithms Applied to Wind Data Series Open
This work aimed to develop methodologies for analysing statistical correlations among wind data series using various Measure-Correlate-Predict (MCP) methods, with the goal of selecting the most suitable method for extrapolating long-term d…
View article: Guest Editorial: Radar systems and processing methods for space situational awareness
Guest Editorial: Radar systems and processing methods for space situational awareness Open
541
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: Table of Contents
Table of Contents Open
The field of Microwave research and industrial engineering keeps evolving at a fast pace, enabling socially relevant developments in the areas of communication, automotive traffic, medical diagnostics and sustainable agriculture, to name j…
View article: Mixing Matrix Calibration for BSS Range Ambiguity Suppression in Multichannel SAR Systems
Mixing Matrix Calibration for BSS Range Ambiguity Suppression in Multichannel SAR Systems Open
A significant level of range ambiguity disturbance may affect high-resolution wide-swath spaceborne synthetic aperture radar (SAR) systems with multiple elevation receive beams. To overcome this limitation, a promising approach, based on t…
View article: GNSS-Based Phase Synchronization for Bistatic and Multistatic Synthetic Aperture Radar
GNSS-Based Phase Synchronization for Bistatic and Multistatic Synthetic Aperture Radar Open
The feasibility of single-pass interferometric or multistatic synthetic aperture radar (SAR) mission concepts largely relies on the ability to achieve the matching of the carrier phase of the different radar instruments of the constellatio…
View article: A 2-D Range Ambiguity Suppression Method Based on Blind Source Separation for Multichannel SAR Systems
A 2-D Range Ambiguity Suppression Method Based on Blind Source Separation for Multichannel SAR Systems Open
Advanced multichannel spaceborne synthetic aperture radar (SAR) systems with multiple elevation beams allow to obtain high-resolution and wide-swath SAR images. However, the degradation of the SAR image quality due to range ambiguities is …
View article: On the Equivalence of LEO-SAR Constellations and Complex High-Orbit SAR Systems for the Monitoring of Large-Scale Processes
On the Equivalence of LEO-SAR Constellations and Complex High-Orbit SAR Systems for the Monitoring of Large-Scale Processes Open
High Earth orbit Synthetic Aperture Radar (SAR) systems offer high temporal sampling and moderate spatial resolution on a global scale, potentially outperforming conventional Low Earth Orbit (LEO) systems in revisit times. However, this re…
View article: IGARSS 2023 in Pasadena, California: Impressions of the First Days [Conference Reports]
IGARSS 2023 in Pasadena, California: Impressions of the First Days [Conference Reports] Open
Provides society information that may include news, reviews or technical notes that should be of interest to practitioners and researchers.
View article: EnVision: understanding why our closest neighbour is so different 
EnVision: understanding why our closest neighbour is so different  Open
<p>&#160;</p> <p>EnVision was selected as ESA's 5th Medium-class mission in the Agency's Cosmic Vision plan, targeting a launch in the early 2030s. EnVision's overarching science questions are to explore the full rang…
View article: IGARSS 2022 in Kuala Lumpur, Malaysia: Impressions of the First Days [Conference Reports]
IGARSS 2022 in Kuala Lumpur, Malaysia: Impressions of the First Days [Conference Reports] Open
Presents information on the above named conference.
View article: The EnVision Mission to Venus
The EnVision Mission to Venus Open
<p>On June 10, 2021, the European Space Agency (ESA) announced the selection of EnVision as its newest medium-class science mission. EnVision's overarching science questions are to explore the full range of geoscientific processes op…
View article: [Front matter]
[Front matter] Open
MIT Lincoln Laboratory is a Department of Defense federally funded R&D center that develops advanced technologies to meet critical national security needs.Our concept-to-prototype development approach guides our R&D of diverse systems, inc…
View article: On-Ground RFI Mitigation for Spaceborne Multichannel SAR Systems Using Auxiliary Beams
On-Ground RFI Mitigation for Spaceborne Multichannel SAR Systems Using Auxiliary Beams Open
Radio Frequency Interference (RFI) has become a major concern for future Synthetic Aperture Radar (SAR) missions. Each occurence of interference introduces artifacts in the radar imagery, biasing the measurements and leading to erroneous r…
View article: Errata for “Autofocus-Based Estimation of Penetration Depth and Permittivity of Ice Volumes and Snow Using Single SAR Images”
Errata for “Autofocus-Based Estimation of Penetration Depth and Permittivity of Ice Volumes and Snow Using Single SAR Images” Open
In the above article [1] , references [21] and [29] incorrectly provide the publication years. Reference [21] was published in 2020; reference [29] was published in 2021. The references appear in full here:
View article: Decorrelating Ambiguities in SAR Interferometry Through Slight PRI Variation
Decorrelating Ambiguities in SAR Interferometry Through Slight PRI Variation Open
Synthetic aperture radar (SAR) interferometry is a well-established technique for producing high-resolution digital elevation models (DEMs) of the Earth’s surface and measuring displacements on different time scales. Observations of SAR in…
View article: A Synthetic Aperture Radar Imaging Mode Utilizing Frequency Scan for Time-of-Echo Compression
A Synthetic Aperture Radar Imaging Mode Utilizing Frequency Scan for Time-of-Echo Compression Open
The synthetic aperture radar (SAR) imaging mode described in this paper utilizes the available signal bandwidth to form a narrow frequency-scanning transmit antenna beam illuminating the swath of interest from far to near range. The imagin…
View article: Autofocus-Based Estimation of Penetration Depth and Permittivity of Ice Volumes and Snow Using Single SAR Images
Autofocus-Based Estimation of Penetration Depth and Permittivity of Ice Volumes and Snow Using Single SAR Images Open
An intrinsic challenge in the geophysical interpretation of low-frequency synthetic aperture radar (SAR) imagery of semitransparent media, such as ice sheets, is the position ambiguity of the scattering structures within the glacial volume…
View article: MirrorSAR: An HRWS Add-On for Single-Pass Multi-Baseline SAR Interferometry
MirrorSAR: An HRWS Add-On for Single-Pass Multi-Baseline SAR Interferometry Open
This article reports the Phase A study results of
\nthe interferometric extension of the high-resolution wide-swath
\n(HRWS) mission with three MirrorSAR satellites. According to
\nthe MirrorSAR concept, small, low-cost, transponder-like r…
View article: IGARSS 2021 Virtual Symposium: Impressions of the First Days [Conference Reports]
IGARSS 2021 Virtual Symposium: Impressions of the First Days [Conference Reports] Open
Presents information on the GRSS society IGARSS 2021 Symposium.
View article: IGARSS 2020 Virtual Symposium: Impressions From the First Days [Conference Reports]
IGARSS 2020 Virtual Symposium: Impressions From the First Days [Conference Reports] Open
Presents information on the IGARSS 2020 Virtual Symposium.
View article: TanDEM-X: 10 Years of Formation Flying Bistatic SAR Interferometry
TanDEM-X: 10 Years of Formation Flying Bistatic SAR Interferometry Open
On June 21, 2010 the still unique TanDEM-X mission was launched and opened a new era in spaceborne radar remote sensing. The first formation flying radar system was built by extending the TerraSAR-X Synthetic Aperture Radar (SAR) mission b…
View article: The High-Resolution Digital-Beamforming Airborne SAR System DBFSAR
The High-Resolution Digital-Beamforming Airborne SAR System DBFSAR Open
Synthetic Aperture Radar (SAR) is an established remote sensing technique that can robustly provide high-resolution imagery of the Earth’s surface. However, current space-borne SAR systems are limited, as a matter of principle, in achievin…
View article: Potential of a Multimodal Orbital Radar Mission for the Exploration of Enceladus
Potential of a Multimodal Orbital Radar Mission for the Exploration of Enceladus Open
<p>An Enceladus mission launched within a realistic time frame (e.g., launch between 2025 and 2040 and a transfer time of about ten years) would likely arrive as the sun is departing or gone from the most interesting South Polar Regi…
View article: Awards Presented at the IGARSS 2019 Banquet [Conference Reports]
Awards Presented at the IGARSS 2019 Banquet [Conference Reports] Open
The IEEE Geoscience and Remote Sensing Society
\n(GRSS) 2019 awards for papers and special achievements were presented at the IEEE International Geoscience
\nand Remote Sensing Symposium (IGARSS) awards banquet
\non 1 August at Osanbashi H…