Jørgen Dall
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View article: Radar Polarimetry in Glaciology: Theory, Measurement Techniques, and Scientific Applications for Investigating the Anisotropy of Ice Masses
Radar Polarimetry in Glaciology: Theory, Measurement Techniques, and Scientific Applications for Investigating the Anisotropy of Ice Masses Open
Dielectric anisotropy in ice alters the propagation of polarized radio waves, so polarimetric radar sounding can be used to survey anisotropic properties of ice masses. Ice anisotropy is either intrinsic, associated with ice‐crystal orient…
View article: A newly digitized ice-penetrating radar data set acquired over the Greenland ice sheet in 1971–1979
A newly digitized ice-penetrating radar data set acquired over the Greenland ice sheet in 1971–1979 Open
We present an ice-penetrating radar data set acquired over the Greenland ice sheet by aircraft during the years 1971, 1972, 1974, 1978, and 1979. The data set comprises over 177 000 km of flight lines and contains a wealth of information o…
View article: A Newly Digitised Ice-penetrating Radar Data Set Acquired over the Greenland Ice Sheet in 1971–1979
A Newly Digitised Ice-penetrating Radar Data Set Acquired over the Greenland Ice Sheet in 1971–1979 Open
We present an ice-penetrating radar data set acquired over the Greenland ice sheet by aircraft during the years 1971, 1972, 1974, 1978, and 1979. The data set comprises over 177,000 km of flight lines and contains a wealth of information o…
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: Improving SAR wind retrieval through automatic anomalous pixel detection
Improving SAR wind retrieval through automatic anomalous pixel detection Open
Satellite observations are increasingly in demand and valuable for monitoring the ocean and coastal winds in near-real-time and analyzing the data historically. However, soared up human activities, man-made constructions, and marine traffi…
View article: A new view of a 1970s radar dataset from Greenland
A new view of a 1970s radar dataset from Greenland Open
The short observational record is one of the main obstacles to improving the present understanding of the future of the Polar ice sheets. While the quantity and quality of observations presently are increasing observations from before the …
View article: Efficient Calibration of Colocated MIMO Radar
Efficient Calibration of Colocated MIMO Radar Open
Measurement-based calibration with a complete MIMO radar system is beneficial due to all imperfections being considered simultaneously. However, if high performance is needed, the number of required calibration measurements escalates with …
View article: Mutual Coupling and Channel Imbalance Calibration of Colocated MIMO Radars
Mutual Coupling and Channel Imbalance Calibration of Colocated MIMO Radars Open
The Multiple-Input Multiple-Output (MIMO) radar combines the signals from multiple transmit and receive elements separately to form a virtual array. Consequently, system imperfections in the MIMO radar caused by channel imbalance and mutua…
View article: Greenland ice velocity maps from the PROMICE project
Greenland ice velocity maps from the PROMICE project Open
We present the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) Ice Velocity product (https://doi.org/10.22008/promice/data/sentinel1icevelocity/greenlandicesheet, Solgaard and Kusk, 2021), which is a time series of Greenland …
View article: Greenland ice velocity maps from the PROMICE project
Greenland ice velocity maps from the PROMICE project Open
We present the Programme for Monitoring of the Greenland Ice Sheet (PROMICE) ice velocity product (https://doi.org/10.22008/promice/data/sentinel1icevelocity/greenlandicesheet) (Solgaard and Kusk, 2021)) which is a September 2016 through p…
View article: Characteristics of ice rises and ice rumples in Dronning Maud Land and Enderby Land, Antarctica
Characteristics of ice rises and ice rumples in Dronning Maud Land and Enderby Land, Antarctica Open
Ice rises and rumples, locally grounded features adjacent to ice shelves, are relatively small yet play significant roles in Antarctic ice dynamics. Their roles generally depend upon their location within the ice shelf and the stage of the…
View article: A Polarimetric Coherence Method to Determine Ice Crystal Orientation Fabric From Radar Sounding: Application to the NEEM Ice Core Region
A Polarimetric Coherence Method to Determine Ice Crystal Orientation Fabric From Radar Sounding: Application to the NEEM Ice Core Region Open
Ice crystal orientation fabric (COF) records information about past ice-sheet deformation and influences the present-day flow of ice. Polarimetric radar sounding provides a means to infer anisotropic COF patterns due to the associated bire…
View article: Calibration Challenges for the Biomass P-Band SAR Instrument
Calibration Challenges for the Biomass P-Band SAR Instrument Open
International audience
View article: Intercomparison and Validation of SAR-Based Ice Velocity Measurement Techniques within the Greenland Ice Sheet CCI Project
Intercomparison and Validation of SAR-Based Ice Velocity Measurement Techniques within the Greenland Ice Sheet CCI Project Open
Ice velocity is one of the products associated with the Ice Sheets Essential Climate Variable. This paper describes the intercomparison and validation of ice-velocity measurements carried out by several international research groups within…
View article: Intercomparison and Validation of SAR-Based Ice Velocity Measurement Techniques within the Greenland Ice Sheet CCI Project
Intercomparison and Validation of SAR-Based Ice Velocity Measurement Techniques within the Greenland Ice Sheet CCI Project Open
Ice velocity is one of the products associated with the Ice Sheets Essential Climate Variable. This paper describes the intercomparison and validation of ice-velocity measurements carried out by several international research groups within…
View article: Simulated Sar Data Of Vehicles On A Background
Simulated Sar Data Of Vehicles On A Background Open
The simulated data set is used as input to a convolutional neural network to train the classifier.