منابع مشابه
A numerical time ephemeris of the Earth
We present a time ephemeris of the Earth, TE405, which approximates a relativistic time-dilation integral from 1600 to 2200 using numerical quadrature of quantities supplied by the recent JPL ephemeris, DE405. The integral is required to transform between terrestrial time, TT, and the (solar-system) barycentric time scales Teph or TCB. Teph is a linear transformation of TCB that represents the ...
متن کاملStatistical Characterization of GLONASS Broadcast Ephemeris Errors
For critical navigation applications such as aircraft approach and landing, there is a general desire to use multi-constellation global navigation satellite systems (GNSS) to enhance availability and reliability. The Russian Global Navigation Satellite System (GLONASS) is so far the only other constellation nearly as developed as the Global Positioning System (GPS). A thorough characterization ...
متن کاملIRNSS Orbit Determination and Broadcast Ephemeris Assessment
The Indian Regional Navigation Satellite System (IRNSS) is an emerging satellite based navigation system offering an independent positioning and timing service over India and neighboring regions. Based on satellite laser ranging data collected by selected stations of the International Laser Ranging Service (ILRS) precise orbits have been determined for the first pair of inclined geosynchronous ...
متن کاملEfficacy of castor oil for induction and augmentation of labor
Castor oil was first noted to have oxytocic properties by ancient Egyptians. Derived from the castor plant Ricinus communis, castor oil may possess properties that are useful are in post-term pregnancies This study was performed at Khatam-Alanbia, hospital in shoushtar city in 1381.In this clinical trail 80 pregnant women, who had indication for induction of labor at term were randomly assigned...
متن کاملError analysis on IGS precise ephemeris of GPS
submitted to WPGM, 2006 The IGS precise orbits of GPS have been widely used in the world ever since the beginning of their broadcast in 1994. Major changes have taken place both in the data processing softwares and the reference frame over the years, but the orbits have not been updated. In this study we reanalyzed the GPS data from the IGS global tracking station since 1994 and compared our re...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1902
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.19021582304