gps卫星预报星历的适用性（Applicability of GPS satellite prediction ephemeris）.docVIP

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gps卫星预报星历的适用性（Applicability of GPS satellite prediction ephemeris）.doc

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gps卫星预报星历的适用性（Applicability of GPS satellite prediction ephemeris）

gps卫星预报星历的适用性（Applicability of GPS satellite prediction ephemeris） Application of GPS satellite ephemeris [screen] [Print] double roll [] [] [Author: closed category: GPS [] the total reading: 454] - Abstract: GPS ephemeris is often used for distribution the next period of time GPS satellite forecasting by quantitative analysis of satellite ephemeris precision application of satellite ephemeris prediction DOP explored the feasibility of proposed application ephemeris optimization design thought measurement of GPS Keywords: application of GPS ephemeris geometric accuracy factor 1 Introduction GPAS broadcast satellite navigation message contained in the broadcast ephemeris can be used to calculate the D @ real-time positioning and ephemeris almanac for #! Longer period of satellite position prediction satellite ephemeris @ D @ is the D satellite ephemeris compendium it is broadcast ephemeris summary form approximate ephemeris the orbit with the same broadcast ephemeris just assuming some parameters to zero ephemeris with broadcast ephemeris format corresponding to just one part of the parameter is not zero zero parameters for Kepler + orbit parameters; !! $$1$ - 5$Z.5# the 5$[[r angle is assumed to be an additional.5 correction value ephemeris accuracy in general ($F to $F between $#%$(% In the @ D positioning measurement we are the most common application of ephemeris forecast the next period of time the distribution of visible stars so in the application of ephemeris for some time in the future satellite position prediction of how much error 3 ephemeris can be used to forecast the ground point positioning accuracy. 3 in this paper examples of the two problems by quantitative analysis 2 GPS satellite ephemeris error The following year ($$ ## months (I.H () received YR ($$ YR- YR# YR#- YR (satellite ephemeris [to calculate the week later in recent days with the satellite coordinates moment ephemeris calculated coordinates relative precise ephemeris coordinat