Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Svein-Erik Hamran"'
Autor:
Sigurd Eide, Titus M. Casademont, Emileigh S. Shoemaker, Sverre Brovoll, Tor Berger, Henning Dypvik, Svein‐Erik Hamran
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 13, Pp n/a-n/a (2024)
Abstract Estimates of radar attenuation in the shallow Martian subsurface are retrieved from RIMFAX soundings along the Perseverance rover traverse. Specifically, analyzed data is from the Hawksbill Gap area during the rover's first drives onto the J
Externí odkaz:
https://doaj.org/article/3b039fe839194124bcf30b8a17574918
Autor:
Emileigh S. Shoemaker, Titus M. Casademont, Lynn M. Carter, Patrick Russell, Henning Dypvik, Sanna Alwmark, Briony H. N. Horgan, Hans E. F. Amundsen, Sigurd Eide, Svein-Erik Hamran, David A. Paige, Sanjeev Gupta, Emily L. Cardarelli, Uni Árting, Tor Berger, Sverre Brovoll
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 8, p 191 (2024)
Perseverance traversed the eastern, northern, and western margins of the Séítah formation inlier on the rover’s western fan front approach. Mapping the stratigraphy and extent of the Máaz and Séítah formations is key to understanding the depos
Externí odkaz:
https://doaj.org/article/993ace5194ba4d03905eff0f9238c6e9
Autor:
Sigurd Eide, Titus M. Casademont, Tor Berger, Henning Dypvik, Emileigh S. Shoemaker, Svein‐Erik Hamran
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 7, Pp n/a-n/a (2023)
Abstract Attenuation of radar waves in the subsurface can be quantified with a constant‐Q approximation through time‐frequency analysis. We implement the centroid frequency‐shift method and study Radar Imager for Mars' Subsurface Exploration (R
Externí odkaz:
https://doaj.org/article/b03c1c563428491983c573574fdb5ebb
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 15, Pp 2998-3007 (2022)
Determining subsurface properties through ground penetrating radar sounding can be challenging, especially in planetary exploration, where little is known about the terrain and additional observations are limited. Analysis and interpretation of data
Externí odkaz:
https://doaj.org/article/625cfa9f49ff4db0a820e28242aaccd7
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 2484-2493 (2021)
This article assesses how the ground-penetrating radar RIMFAX will image the crater floor at the Mars 2020 landing site, where lithological compositions and stratigraphic relationships are under discussion prior to mission operation. A putative mafic
Externí odkaz:
https://doaj.org/article/a8d97f035a9945d8ab5150c5079c6ca0
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2010 (2010)
This paper studies the optimum signal choice for the estimation of the aortic blood pressure via aorta radius, using a monostatic radar configuration. The method involves developing the Cramér-Rao lower bound (CRLB) for a simplified model. The CRLB
Externí odkaz:
https://doaj.org/article/d9877cc2bb65432686dd13daf6cff4af
Autor:
Titus M. Casademont, Sigurd Eide, Emileigh Shoemaker, Tor Berger, Patrick Russell, Svein-Erik Hamran
The RIMFAX ground penetrating radar instrument on board the Mars 2020 Perseverance Rover has been continuously sounding the subsurface alongthe Rover traverse. In the data of the first 379 mission days on the Jezero Crater Floor we are able to identi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42b06ca24e1ee5db2ec3752f3980bdd3
https://doi.org/10.5194/egusphere-egu23-15500
https://doi.org/10.5194/egusphere-egu23-15500
Publikováno v:
19th International Conference on Ground Penetrating Radar.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f85d0a2d227ec19ad52d6c648af0f81
https://doi.org/10.1190/gpr2022-018.1
https://doi.org/10.1190/gpr2022-018.1
Autor:
Svein-Erik Hamran, David A. Paige, Abigail Allwood, Hans E. F. Amundsen, Tor Berger, Sverre Brovoll, Lynn Carter, Titus M. Casademont, Leif Damsgård, Henning Dypvik, Sigurd Eide, Alberto G. Fairén, Rebecca Ghent, Jack Kohler, Michael T. Mellon, Daniel C. Nunes, Dirk Plettemeier, Patrick Russell, Matt Siegler, Mats Jørgen Øyan
Publikováno v:
Science Advances. 8
The Radar Imager for Mars Subsurface Experiment instrument has conducted the first rover-mounted ground-penetrating radar survey of the Martian subsurface. A continuous radar image acquired over the Perseverance rover’s initial ~3-kilometer travers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4296787be42b3b56fb2323edde4daf4
https://doi.org/10.1126/sciadv.abp8564
https://doi.org/10.1126/sciadv.abp8564
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 58:218-226
This article presents a short-range, bistatic radar system for in situ , long-term snow monitoring. The proposed system is capable of autonomously capturing time-lapsed, 2-D images of the snow cover. In this article, we report on system concept and i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eef0b71763d5dc19f22583cf54d498a6
https://doi.org/10.1109/tgrs.2019.2935781
https://doi.org/10.1109/tgrs.2019.2935781