UHF Radar Sounding of Polar Ice Sheets
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UHF Radar Sounding of Polar Ice Sheets. / Yan, Jie-Bang; Nunn, Joshua A.; Gogineni, Prasad; O'Neill, Charles; Simpson, Christopher D.; Taylor, Ryan A.; Steinhage, Daniel; Dahl-Jensen, Dorthe; Miller, Heinrich; Eisen, Olaf.
In: IEEE Geoscience and Remote Sensing Letters, Vol. 17, No. 7, 01.07.2020, p. 1173-1177.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - UHF Radar Sounding of Polar Ice Sheets
AU - Yan, Jie-Bang
AU - Nunn, Joshua A.
AU - Gogineni, Prasad
AU - O'Neill, Charles
AU - Simpson, Christopher D.
AU - Taylor, Ryan A.
AU - Steinhage, Daniel
AU - Dahl-Jensen, Dorthe
AU - Miller, Heinrich
AU - Eisen, Olaf
PY - 2020/7/1
Y1 - 2020/7/1
N2 - In this letter, we report on the design, development, and field operation of a surface-based multi-channel ultrawideband (UWB) ultrahigh frequency (UHF) radar to measure ice thickness, basal conditions, and ice-shelf bottom melt rates. The radar concept is based on the recent success in sounding shallow low-loss ice (similar to 1 km) and measuring the ice-shelf melt rates with a 600-900-MHz low-power radar, referred to as the accumulation radar. Our proposed radar system operates over the same frequency band, from 600 to 900 MHz, with a peak transmit power of 800 W. We used a large and lightweight 16 m x 17 m antenna array arranged in a Mills cross-configuration to obtain the required radar sensitivity to sound more than 3- kmthick ice and image the internal layers at a fine vertical resolution of about 60 cm. We used the system at the East Greenland Ice-coring Project (EGRIP) site in Summer 2018 to collect data over similar to 100 km of lines. We sounded about 2.8-km-thick ice with more than 40- dB signal-to-noise ratio and mapped the internal layers to a depth of almost 2.5 km. Our results show that an airborne or spaceborne radar operating at frequencies as high as 900 MHz with a large antenna array can be used to map large ice sheets in Greenland and Antarctica.
AB - In this letter, we report on the design, development, and field operation of a surface-based multi-channel ultrawideband (UWB) ultrahigh frequency (UHF) radar to measure ice thickness, basal conditions, and ice-shelf bottom melt rates. The radar concept is based on the recent success in sounding shallow low-loss ice (similar to 1 km) and measuring the ice-shelf melt rates with a 600-900-MHz low-power radar, referred to as the accumulation radar. Our proposed radar system operates over the same frequency band, from 600 to 900 MHz, with a peak transmit power of 800 W. We used a large and lightweight 16 m x 17 m antenna array arranged in a Mills cross-configuration to obtain the required radar sensitivity to sound more than 3- kmthick ice and image the internal layers at a fine vertical resolution of about 60 cm. We used the system at the East Greenland Ice-coring Project (EGRIP) site in Summer 2018 to collect data over similar to 100 km of lines. We sounded about 2.8-km-thick ice with more than 40- dB signal-to-noise ratio and mapped the internal layers to a depth of almost 2.5 km. Our results show that an airborne or spaceborne radar operating at frequencies as high as 900 MHz with a large antenna array can be used to map large ice sheets in Greenland and Antarctica.
KW - Ice
KW - radar
KW - sounder
KW - ultrawideband (UWB)
U2 - 10.1109/LGRS.2019.2942582
DO - 10.1109/LGRS.2019.2942582
M3 - Journal article
VL - 17
SP - 1173
EP - 1177
JO - IEEE Geoscience and Remote Sensing Letters
JF - IEEE Geoscience and Remote Sensing Letters
SN - 1545-598X
IS - 7
ER -
ID: 271543371