Results from Three Years of Ka-Band Propagation Characterization at Svalbard, Norway
Over the next several years, NASA plans to launch several earth science missions which are expected to achieve data throughputs of 5-40 terabits per day transmitted from low earth orbiting spacecraft to ground stations. The current S-band and X-band frequency allocations in use by NASA, however, are...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20150023051 2023-05-15T18:29:27+02:00 Results from Three Years of Ka-Band Propagation Characterization at Svalbard, Norway Nessel, James Morse, Jacquelynne Zemba, Michael Unclassified, Unlimited, Publicly available April 15, 2015 application/pdf http://hdl.handle.net/2060/20150023051 unknown Document ID: 20150023051 http://hdl.handle.net/2060/20150023051 No Copyright CASI Communications and Radar GRC-E-DAA-TN22451 European Conference on Antennas and Propagation; 12-17 Apr. 2015; Lisbon; Portugal 2015 ftnasantrs 2019-07-20T23:59:56Z Over the next several years, NASA plans to launch several earth science missions which are expected to achieve data throughputs of 5-40 terabits per day transmitted from low earth orbiting spacecraft to ground stations. The current S-band and X-band frequency allocations in use by NASA, however, are incapable of supporting the data rates required to meet this demand. As such, NASA is in the planning stages to upgrade its existing Near Earth Network (NEN) polar ground stations to support Ka-band (25.5-27 GHz) operations. Consequently, it installed and operated a Ka-band radiometer at the Svalbard site. Svalbard was chosen as the appropriate site for two primary reasons: (1) Svalbard will be the first site to be upgraded to Ka-band operations within the NEN Polar Network enhancement plan, and (2) there exists a complete lack of Ka-band propagation data at this site (as opposed to the Fairbanks, AK NEN site, which has 5 years of characterization collected during the Advanced Communications Technology becomes imperative that characterization of propagation effects at these NEN sites is conducted to determine expected system Satellite (ACTS) campaign). processing and provide the Herein, we discuss the data three-year measurement results performance, particularly at low elevation angles ((is) less than 10 deg) from the ongoing Ka-band propagation characterization where spacecraft signal acquisition typically occurs. Since May 2011, NASA Glenn Research Center has installed and operated a Ka-band radiometer at the NEN site located in Svalbard, Norway. The Ka-band radiometer monitors the water vapor line, as well as 4 frequencies around 26.5 GHz at a fixed 10 deg elevation angle. Three-year data collection results indicate good campaign at Svalbard, Norway. Comparison of these results with the ITU models and existing ERA profile data indicates very good agreement when the 2010 rain maps and cloud statistics are used. Finally, the Svalbard data is used to derive the expected atmospheric margin requirements for this site agreement with models and comparable performance to necessary to maintain total system availability levels for the previously characterized northern latitude sites in the United States, i.e., Fairbanks, Alaska. The Svalbard data is used to upcoming Joint Polar Satellite System (JPSS) launch in the derive availability results for an upcoming earth-observation 2017/2022 timeframes. mission, JPSS-1, and indicate a requirement of 4 dB of atmospheric attenuation margin necessary to close the link with 99% overall system availability for the expected LEO orbital cycle, as observed from the Svalbard location. Other/Unknown Material Svalbard Alaska NASA Technical Reports Server (NTRS) Fairbanks Norway Svalbard |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Communications and Radar |
spellingShingle |
Communications and Radar Nessel, James Morse, Jacquelynne Zemba, Michael Results from Three Years of Ka-Band Propagation Characterization at Svalbard, Norway |
topic_facet |
Communications and Radar |
description |
Over the next several years, NASA plans to launch several earth science missions which are expected to achieve data throughputs of 5-40 terabits per day transmitted from low earth orbiting spacecraft to ground stations. The current S-band and X-band frequency allocations in use by NASA, however, are incapable of supporting the data rates required to meet this demand. As such, NASA is in the planning stages to upgrade its existing Near Earth Network (NEN) polar ground stations to support Ka-band (25.5-27 GHz) operations. Consequently, it installed and operated a Ka-band radiometer at the Svalbard site. Svalbard was chosen as the appropriate site for two primary reasons: (1) Svalbard will be the first site to be upgraded to Ka-band operations within the NEN Polar Network enhancement plan, and (2) there exists a complete lack of Ka-band propagation data at this site (as opposed to the Fairbanks, AK NEN site, which has 5 years of characterization collected during the Advanced Communications Technology becomes imperative that characterization of propagation effects at these NEN sites is conducted to determine expected system Satellite (ACTS) campaign). processing and provide the Herein, we discuss the data three-year measurement results performance, particularly at low elevation angles ((is) less than 10 deg) from the ongoing Ka-band propagation characterization where spacecraft signal acquisition typically occurs. Since May 2011, NASA Glenn Research Center has installed and operated a Ka-band radiometer at the NEN site located in Svalbard, Norway. The Ka-band radiometer monitors the water vapor line, as well as 4 frequencies around 26.5 GHz at a fixed 10 deg elevation angle. Three-year data collection results indicate good campaign at Svalbard, Norway. Comparison of these results with the ITU models and existing ERA profile data indicates very good agreement when the 2010 rain maps and cloud statistics are used. Finally, the Svalbard data is used to derive the expected atmospheric margin requirements for this site agreement with models and comparable performance to necessary to maintain total system availability levels for the previously characterized northern latitude sites in the United States, i.e., Fairbanks, Alaska. The Svalbard data is used to upcoming Joint Polar Satellite System (JPSS) launch in the derive availability results for an upcoming earth-observation 2017/2022 timeframes. mission, JPSS-1, and indicate a requirement of 4 dB of atmospheric attenuation margin necessary to close the link with 99% overall system availability for the expected LEO orbital cycle, as observed from the Svalbard location. |
format |
Other/Unknown Material |
author |
Nessel, James Morse, Jacquelynne Zemba, Michael |
author_facet |
Nessel, James Morse, Jacquelynne Zemba, Michael |
author_sort |
Nessel, James |
title |
Results from Three Years of Ka-Band Propagation Characterization at Svalbard, Norway |
title_short |
Results from Three Years of Ka-Band Propagation Characterization at Svalbard, Norway |
title_full |
Results from Three Years of Ka-Band Propagation Characterization at Svalbard, Norway |
title_fullStr |
Results from Three Years of Ka-Band Propagation Characterization at Svalbard, Norway |
title_full_unstemmed |
Results from Three Years of Ka-Band Propagation Characterization at Svalbard, Norway |
title_sort |
results from three years of ka-band propagation characterization at svalbard, norway |
publishDate |
2015 |
url |
http://hdl.handle.net/2060/20150023051 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Fairbanks Norway Svalbard |
geographic_facet |
Fairbanks Norway Svalbard |
genre |
Svalbard Alaska |
genre_facet |
Svalbard Alaska |
op_source |
CASI |
op_relation |
Document ID: 20150023051 http://hdl.handle.net/2060/20150023051 |
op_rights |
No Copyright |
_version_ |
1766212516203986944 |