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GPS error budget determination********************************************************************************* COMPUTATION OF ERROR BUDGET ***** **************************************************************************** ***** Input data ****** Space segment error (meters, 1-sigma) = 1.900 Control segment error (meters, 1-sigma) = 3.500 User segment, tropo error (meters, 1-sigma) = 2.000 User segment, iono error (meters, 1-sigma) = 5.000 User segment, multipath error (meters, 1-sigma) = 1.400 User segment, receiver error (meters, 1-sigma) = 3.000 PDOP = 2.1800 HDOP = 1.3600 VDOP = 1.7000 TDOP = 0.9500 ***** Results by using XEBUDGET ****** URE (User Range Error), in meters = 3.9825 UEE (User Equipment Error), in meters = 6.3214 UERE (User Equivalent Range Error), in meters = 7.4713 SEP (Spherical Error Probable), 3-D 50 percentage, in meters = 14.4648 CEP (Circular Error Probable, 2-D 50 percentage, in meters = 8.4590 LEP (Linear Error Probable), Vertical 50 percentage, in meters = 8.5669 Time Error (50 percentage), in nanoseconds = 15.798 3-D (Spherical) Position Error (95 percentage), in meters = 26.288 2-D (Horizontal) Position Error (95 percentage), in meters = 20.322 Actual 2-D (Horizontal) Position Error (95 percentage), in meters = 17.587 Vertical Position Error (95 percentage), in meters = 25.402 Actual Vertical Position Error (95 percentage), in meters = 25.296 Time Error (95 percentage), in nanoseconds = 46.845 Actual Time Error (95 percentage), in nanoseconds = 46.648 **************************************************************************** End of the program XEBUDGET |
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