Ice-sheet sounding at X, L and UHF bands from high altitude by vertical SAR imaging

International audience Though generally used for side-looking "push-broom" imaging, the synthetic aperture radar principle can, as well, be applied to nadir looking vertical plane imaging. Vertical SAR has proven useful e.g. for high altitude altimetric accurate navigation resetting. Durin...

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Bibliographic Details
Main Author: Cantalloube, Hubert
Other Authors: DEMR, ONERA, Université Paris Saclay Palaiseau, ONERA-Université Paris-Saclay
Format: Conference Object
Language:English
Published: HAL CCSD 2021
Subjects:
BASSE FREQUENCE
GLACE
SONDEUR
AEROPORTE
[SPI]Engineering Sciences [physics]
[PHYS]Physics [physics]
Greenland
Ice Sheet
Online Access:https://hal.science/hal-03243440
https://hal.science/hal-03243440/document
https://hal.science/hal-03243440/file/DEMR21022%20preprint.pdf
Description
Summary:International audience Though generally used for side-looking "push-broom" imaging, the synthetic aperture radar principle can, as well, be applied to nadir looking vertical plane imaging. Vertical SAR has proven useful e.g. for high altitude altimetric accurate navigation resetting. During the 2017 ONERA campaign in Greenland, this imaging mode was investigated for assessment of snow/ice radar penetration in the ice-sheet. At UHF-band, it provides a clear image of subsurface ice density discontinuities up to a depth of few tens of meters, comparable to images obtained from ground penetrating radar (GPR) operated directly at the surface. The possibility of acquiring such images from a safer distance at a much higher velocity should increase the throughput of future glaciology campaigns on polar ice-sheets.

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