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Continued Monitoring to calculate the local tie GNSS-VLBI.

Continued Monitoring to calculate the local tie GNSS-VLBI. O monitoramento contínuo para o cálculo do ligação local GNSS-VLBI. Monitorización continúa para el cálculo del enlace local GNSS-VLBI. Ing. Javier López-Ramasco Dr. Álvaro Santamaría-Gómez

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Continued Monitoring to calculate the local tie GNSS-VLBI.

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  1. Continued Monitoring to calculate the local tie GNSS-VLBI. O monitoramento contínuo para o cálculo do ligação local GNSS-VLBI. Monitorización continúa para el cálculo del enlace local GNSS-VLBI. Ing. Javier López-Ramasco Dr. Álvaro Santamaría-Gómez Centro de Desarrollos Tecnológicos de Yebes (CDTY). Instituto Geográfico Nacional.

  2. Space geodetic techniques D.O.R.I.S. / Doppler V.L.B.I G.N.S.S. S.L.R.

  3. Invariant Reference Point VLBI

  4. System Performance R.T.S Control Software VB.net Computer R.T.S. Robotic Total Station Targets Reflector Corner Cubes

  5. Software Ф , λGeocoordinates TLocal time PC Precession Correction Additional Parameters Meteorological Corrections Geometric Corrections Number and position of targets R.T.S. Orientation 24h/365d VLBI/Astro Session Schedule file (*.snp) S.N. Source Name R.A. Right Ascension D. Declination Δt Obs. Time Interval R.T.S Measure Xtargets Ytargets Ztargets t0 Antenna θAzimuth E. Elevation Xtarget Ytarget Ztarget R.T.S. HAzimuth VVertical Angle ONLINE • Calculation Software • Mathematical model linearized. • Least square method. • Results • X , Y , Z IRP Coordinates • α , β Vertical axis inclination. • γ Torsion • e Eccentricity Observation log file (*.txt) Xtargets Ytargets Ztargets Antenna Sensors log file (*.txt) θAzimuth (Antenna Sensor) EElevation (Antenna Sensor) T.S. Time Stamp

  6. Targets

  7. To Do: • To built several concrete pillars and monumentation around the antennas. • To built new multiprisms (corner cubes) reflectors. • To test the new reflectors and to model the errors. • To test the accuracy of the system (R.T.S-Software) measures. • Static • Dynamic • To attach Targets at the VLBI antenna. • To install and measure of GNSS sensors. • To calculate the Local Tie Vector (I.R.P.) applying the mathematical model and to study the results.

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