GPS Earth Observation Network System
نویسندگان
چکیده
منابع مشابه
First Spaceborne Observation of an Earth-Reflected GPS Signal
We present the first spaceborne observation of a Global Positioning System (GPS) signal reflected from the Earth’s surface, specifically from the Pacific Ocean. This result is scaled to obtain the expected voltage signal-to-noise ratio (SNR) and altimetric accuracy for a generic GPS-reflections altimetry mission, and the current SAC-C and CHAMP missions. Cross-correlating a three-parameter phas...
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What is requested? The Group on Earth Observations (GEO) was established in July 2003 to begin development of the Global Earth Observation System of Systems (GEOSS). GEO is an international partnership espousing the free exchange of Earth observational data. The US participates in GEO and GEOSS through the Interagency Working Group on Earth Observations (IWGEO), a collection of 15 Federal agenc...
متن کاملPrecise Orbit Determination for NASA's Earth Observing System Using GPS
An appfication of a precision orbit determination technique for NASA's Earth Observing System (EOS) using the Global Positioning System (GPS) is described. This technique allows the geometric information from measurements of GPS carrier phase and P-code pseudo-range to be exploited while minimizing requirements for precision dynamical modeling. Briefly, the method combines geometric and dynamic...
متن کاملSpaceborne Gps for Earth Science
With the recent completion of the Global Positioning System constellation and the appearance of increasingly affordable spaceborne receivers, GPS is moving rapidly into the world of space flight projects. Indeed, owing to the great utility and convenience of autonomous onboard positioning, timing, and attitude determination, basic navigation receivers are coming to be seen as almost indispensab...
متن کاملScheduling a constellation of agile earth observation satellites with preemption
In this paper, we consider a scheduling problem for a set of agile Earth observation satellites for scanning different parts of the Earth’s surface. We assume that preemption is allowed to prevent repetitive images and develop four different preemption policies. Scheduling is done for the imaging time window and transmission time domain to the Earth stations as well. The value of each picture ...
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ژورنال
عنوان ژورنال: Journal of the Japan Society for Precision Engineering
سال: 2005
ISSN: 1882-675X,0912-0289
DOI: 10.2493/jjspe.71.1339