Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Alberto G. Villafranca"'
Publikováno v:
Experimental Astronomy. 21:125-149
Gaia is the most ambitious space astrometry mission currently envisaged and it will be a technological challenge in all its aspects. Here we describe a proposal for the data compression system of Gaia, specifically designed for this mission but based
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85a6fbb718b94e02ca13e2820b7c6305
https://doi.org/10.1007/s10686-007-9078-1
https://doi.org/10.1007/s10686-007-9078-1
Publikováno v:
Satellite Data Compression ISBN: 9781461411826
Many data compression systems rely on a final stage based on an entropy coder, generating short codes for the most probable symbols. Images, multispectroscopy or hyperspectroscopy are just some examples, but the space mission concept covers many othe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26a857f70f000ef32407faa3be3391eb
https://doi.org/10.1007/978-1-4614-1183-3_5
https://doi.org/10.1007/978-1-4614-1183-3_5
Publikováno v:
SPIE Proceedings.
Future space missions are based on a new generation of instruments. These missions find a serious constraint in the telemetry system, which cannot download to ground the large volume of data generated. Hence, data compression algorithms are often man
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efda7c29f59c1ea04ffc19fac22fe1c2
https://doi.org/10.1117/12.895138
https://doi.org/10.1117/12.895138
Autor:
Anna Tardà, M. Vall-llossera, Jordi Corbera, Adriano Camps, Francisco Martin, Luca Pipia, Alberto G. Villafranca, Juan Fernando Marchan, Maria Piles, Albert Aguasca
Publikováno v:
IGARSS
HUMID is a regional level airborne soil moisture mission. The envisioned product combines two key characteristics. On one hand, it provides robustness in presence of surface roughness and vegetation. On the other hand, it improves the current spatial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c89702b5acd022a4c09b91426dedca2c
https://doi.org/10.1109/igarss.2011.6049876
https://doi.org/10.1109/igarss.2011.6049876
Publikováno v:
SPIE Newsroom.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57891858d558da51c5ced45261281b8e
https://doi.org/10.1117/2.1201103.003584
https://doi.org/10.1117/2.1201103.003584
Publikováno v:
SPIE Proceedings.
The Consultative Committee for Space Data Systems (CCSDS) recommends the use of a two-stage strategyfor lossless data compression in space. At the core of the second stage is the Rice coding method. The Ricecompression ratio rapidly decreases in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7641a432cab5d035c7478fbcc7809901
https://doi.org/10.1117/12.860862
https://doi.org/10.1117/12.860862
Autor:
Alberto G. Villafranca, Enrique García-Berro, Patrícia Ruiz-Rodríguez, Iu Mora, Jordi Portell
Publikováno v:
SPIE Proceedings.
The Global Positioning System (GPS) has long been used as a scientific tool, and it has turned into a very powerful technique in domains like geophysics, where it is commonly used to study the dynamics of a large variety of systems, like glaciers, te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dd69753e13f54a0b139fd0694861349
https://doi.org/10.1117/12.860848
https://doi.org/10.1117/12.860848
Publikováno v:
AHS
The instruments used in modern space missions require increasing amounts of telemetry resources to download the acquired data to the ground. Data compression helps to mitigate this problem and, therefore, it is currently seen as a mandatory stage for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74c0de7835c1e27025c686ae59d5b45e
https://doi.org/10.1109/ahs.2010.5546264
https://doi.org/10.1109/ahs.2010.5546264
Publikováno v:
DCC
The scientific instruments included in modern space missions require high compression ratios in order to downlink all the acquired data to the ground. In many cases, this must be achieved without losses and the available processing power is modest. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a33326a35c09f069f42c2557861d7c7
https://doi.org/10.1109/dcc.2010.70
https://doi.org/10.1109/dcc.2010.70
Publikováno v:
Journal of Applied Remote Sensing. 4:041784
More than a decade has passed since the Consultative Committee for Space Data Systems (CCSDS) made its recommendation for lossless data compression. The CCSDS standard is commonly used for scientific missions because it is a general-purpose lossless
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d48a4813cbc36b977520a8433f1457e
https://doi.org/10.1117/1.3479585
https://doi.org/10.1117/1.3479585