Results 311 to 320 of about 67,581 (340)

Compartmental low-rank filtering of radio-echo sounding data

2016 16th International Conference on Ground Penetrating Radar (GPR), 2016
This paper presents a compartmental filtering method to improve signal-to-noise ratio (SNR) of the radio-echo sounding (RES) data of ice sheets while preserve weak signals in the deep layers. The proposed method performs local low-rank filtering on different internal layers of ice sheet to avoid weak signals from being filtered by global denoising ...
Y. Liu, Q. Wang, B. Zhao, X. J. Liu
openaire   +2 more sources

High-Sensitivity Transceiver for Airborne Ultra-Wideband Radio Echo Sounding of Polar Regions

2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), 2022
This paper presents the design and development of a high-sensitivity ultra-wideband radar for sounding and imaging 5-km thick polar ice. The design is optimized to detect internal layers in ice from the surface to the bed with fine resolution.
Abhishek Kumar Awasthi, Drew Taylor, Shriniwas Kolpuke, Omid Reyhanigalangashi, Leo Vanderburgh, D. Elluru, Charles R. O'Neill, Changhyun Chung, Joohan Lee, S. Gogineni   +9 more
semanticscholar   +1 more source

Progress report on radio echo sounding

Polar Record, 1967
This report is intended to summarize activities in radio echo sounding since the introductory paper which appeared in the Polar Record four years ago (Evans, 1963 a). The field work since that time is discussed in rough chronological order, with references to the sources of more detailed information and an assessment of the principal results.
S. Evans, D. J. Drewry, G. de Q. Robin
openaire   +2 more sources

Antarctic airborne radio echo sounding, 1977–78

Polar Record, 1978
During the austral summer 1977–78 the Scott Polar Research Institute (SPRI) conducted a fifth season of airborne radio echo sounding in Antarctica as part of a joint project with the US National Science Foundation Division of Polar Programs (NSF-DPP) and the Technical University of Denmark (TUD).
D. J. Drewry, D. T. Meldrum
openaire   +1 more source

IceAnatomy: a benchmark dataset and methodology for automatic ice boundary extraction from radio-echo sounding data

The Cryosphere
. The measurement of ice thickness is of great importance for the accurate estimation of glacier volume and the delineation of bedrock topography. In particular, this is a crucial factor in forecasting the future evolution of glaciers in the context of a
Marcel Dreier, Moritz Koch, Nora Gourmelon, Norbert Blindow, D. Steinhage, Fei Wu, T. Seehaus, Matthias H. Braun, A. Maier, Vincent Christlein   +9 more
semanticscholar   +1 more source

PIRESGAN: Radio Echo Sounding Signal Synthesis with Physic-informed Generative Adversarial Networks

Progress in Electromagnetics Research Symposium
Recognizing subglacial lakes (SLs) through radio echo sounding (RES) data has become a prominent research area in glaciology. Despite the continuous collection of extensive heterogeneous RES data, extracting meaningful information remains a significant ...
Q. Ma, T. Hao
semanticscholar   +1 more source

Radio echo sounding of sea ice

Ocean '74 - IEEE International Conference on Engineering in the Ocean Environment, 1974
1. Morphological structure and state (i.e. temperature, salinity) of drifting sea ice are discussed. 2. The results of laboratory and natural investigations of UHF electromagnetic characteristics ( and tg ) of drifting sea ice are given. The estimate of electromagnetic contrast on ice-sea water boundary is given. 3.
openaire   +1 more source

Tracing the Layer Boundary of the Ice Sheet from Radio-Echo Sounding Data

International Conference on Grounds Penetrating Radar, 2018
Based on a compartmental model and the dielectric properties of the ice sheet, this paper presents a layer boundary tracing method for tracing the boundaries of different dielectrics of the ice sheet. In this paper, the empirical mean curve decomposition
S. Wang, Yiping Song, Z. Cheng, Q. Wang, B. Zhao, Y. Liu   +5 more
semanticscholar   +1 more source

Compartmental Gaussian Mixture Model used for Layer Detection in Radio-Echo Sounding Data

International Conference on the Software Process, 2018
This paper presents a compartmental Gaussian mixture model (GMM) method to trace layers of the ice sheet with radio-echo sounding (RES) data. Based on the compartmentalization of RES data, the proposed method build a compartmental Gaussian mixture model,
Yan Liu, Jiangyu Han, Weiwei Qu, Bo Zhao, Qiang Wang   +4 more
semanticscholar   +1 more source

Airborne radio echo sounding of glaciers in Svalbard

Polar Record, 1980
During April–May 1980 the Scott Polar Research Institute (SPRI) and Norsk Polarinstitutt (NPI) conducted a joint programme of radio echo sounding (RES) in Svalbard. The principal aims were to evaluate the performance of SPRI 60 MHz echo sounding equipment of Svalbard glaciers, to measure ice thickness over a wide range of conditions, and to investigate
D. J. Drewry, O. Liestøl, C. S. Neal, O. Orheim, B. Wold   +4 more
openaire   +1 more source