1 / 9

PAGES Enhancements

PAGES Enhancements. Steve Hilla and Jim Rohde National Geodetic Survey 2005 Convocation October 24 – 28, 2005 Silver Spring, Maryland Holiday Inn 8777 Georgia Avenue. Changes to Pages in 2004/2005. 04/2 Correct Initialization of IERS Solid Earth Tide

caitlin
Download Presentation

PAGES Enhancements

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PAGES Enhancements Steve Hilla and Jim Rohde National Geodetic Survey 2005 Convocation October 24 – 28, 2005 Silver Spring, Maryland Holiday Inn 8777 Georgia Avenue

  2. Changes to Pages in 2004/2005 • 04/2 Correct Initialization of IERS Solid Earth Tide • 04/7 Read ANTEX files (ground and satellite antennas) • 04/9 Read SP3-a, SP3-b, and SP3-c orbit formats • 04/10 Estimate satellite antenna offsets and PCVs • 05/2 Estimate position at monument (rather than L1PC) • 05/4 Add Melbourne/Wubbena for Ambiguity Fixing • 05/7 Correct sign in pole tide model • 05/8 Update sub-daily EOP model • 05/9 Add block IIR-A, IIR-B, and IIR-M labels for ANTEX

  3. 1.3 G ANTEX VERSION / SYST A PCV TYPE / REFANT ########################################################### COMMENT Satellite antenna corrections: COMMENT - estimated from more than 10 years of IGS data COMMENT - mean of GFZ and TUM results COMMENT - solutions aligned to IGb00 COMMENT - satellite-specific z-offsets (trend-corrected to COMMENT 2000.0) COMMENT - block-specific x- and y-offsets (manufacturer COMMENT information) COMMENT - block-specific nadir-dependent patterns COMMENT - no azimuth-dependent corrections COMMENT Receiver antenna corrections: COMMENT - absolute elevation- and azimuth-dependent corrections COMMENT from robot calibrations in the field performed by COMMENT Geo++ GmbH (http://gnpcvdb.geopp.de) COMMENT - elevation-dependent corrections from relative field COMMENT calibrations performed by NGS; converted to absolute COMMENT corrections by adding COMMENT d_offset (AOAD/M_T_abs - AOAD/M_T_rel) and COMMENT d_pattern (AOAD/M_T_abs - AOAD/M_T_rel) COMMENT (http://www.ngs.noaa.gov/ANTCAL) COMMENT Compiled by Ralf Schmid (TUM), e-mail: schmid@bv.tum.de COMMENT ########################################################### COMMENT END OF HEADER START OF ANTENNA ANTEX Header

  4. ANTEX: Satellite offsets and phase patterns ########################################################### COMMENT END OF HEADER START OF ANTENNA BLOCK IIA G01 G032 1992-079A TYPE / SERIAL NO GFZ/TUM 0 20-APR-05 METH / BY / # / DATE 0.0 DAZI 0.0 14.0 1.0 ZEN1 / ZEN2 / DZEN 2 # OF FREQUENCIES 1992 11 22 0 0 0.0000000 VALID FROM IGS_05 SINEX CODE G01 START OF FREQUENCY 279.00 0.00 2201.00 NORTH / EAST / UP NOAZI -0.80 -0.90 -0.90 -0.80 -0.40 0.20 0.80 1.30 1.40 - G01 END OF FREQUENCY G02 START OF FREQUENCY 279.00 0.00 2201.00 NORTH / EAST / UP NOAZI -0.80 -0.90 -0.90 -0.80 -0.40 0.20 0.80 1.30 1.40 - G02 END OF FREQUENCY END OF ANTENNA START OF ANTENNA BLOCK II G02 G013 1989-044A TYPE / SERIAL NO

  5. START OF ANTENNA AOAD/M_T NONE TYPE / SERIAL NO ROBOT Geo++ GmbH 1 27-JAN-03 METH / BY / # / DATE 5.0 DAZI 0.0 90.0 5.0 ZEN1 / ZEN2 / DZEN 2 # OF FREQUENCIES IGS_05 SINEX CODE G01 START OF FREQUENCY 0.60 -0.46 91.24 NORTH / EAST / UP NOAZI 0.00 -0.24 -0.92 -1.97 -3.28 -4.69 -6.05 -7.19 -7.97 - 0.0 0.00 -0.28 -1.01 -2.12 -3.49 -4.95 -6.35 -7.52 -8.32 - 5.0 0.00 -0.28 -1.01 -2.12 -3.48 -4.94 -6.34 -7.50 -8.30 - 10.0 0.00 -0.28 -1.01 -2.11 -3.46 -4.92 -6.32 -7.48 -8.27 - 15.0 0.00 -0.27 -1.00 -2.10 -3.45 -4.90 -6.29 -7.46 -8.25 - 20.0 0.00 -0.27 -0.99 -2.08 -3.43 -4.88 -6.27 -7.43 -8.22 - 25.0 0.00 -0.27 -0.98 -2.07 -3.41 -4.85 -6.24 -7.39 -8.19 - 30.0 0.00 -0.26 -0.98 -2.06 -3.39 -4.83 -6.21 -7.36 -8.15 - 35.0 0.00 -0.26 -0.97 -2.04 -3.37 -4.80 -6.17 -7.32 -8.11 - 40.0 0.00 -0.26 -0.96 -2.02 -3.34 -4.77 -6.13 -7.28 -8.07 - 45.0 0.00 -0.25 -0.95 -2.01 -3.32 -4.74 -6.10 -7.24 -8.03 - 50.0 0.00 -0.25 -0.94 -1.99 -3.29 -4.70 -6.06 -7.19 -7.98 - 55.0 0.00 -0.24 -0.93 -1.97 -3.27 -4.67 -6.02 -7.15 -7.93 - 60.0 0.00 -0.24 -0.92 -1.95 -3.24 -4.64 -5.98 -7.10 -7.88 - 65.0 0.00 -0.24 -0.91 -1.94 -3.22 -4.60 -5.94 -7.06 -7.83 - 70.0 0.00 -0.23 -0.90 -1.92 -3.19 -4.57 -5.90 -7.02 -7.79 - 75.0 0.00 -0.23 -0.89 -1.91 -3.17 -4.55 -5.87 -6.98 -7.75 - 80.0 0.00 -0.23 -0.88 -1.89 -3.16 -4.53 -5.84 -6.95 -7.72 - 85.0 0.00 -0.22 -0.87 -1.88 -3.14 -4.51 -5.82 -6.93 -7.69 - 90.0 0.00 -0.22 -0.87 -1.87 -3.13 -4.49 -5.81 -6.92 -7.68 - 95.0 0.00 -0.22 -0.86 -1.87 -3.12 -4.49 -5.80 -6.91 -7.68 -

  6. END OF ANTENNA START OF ANTENNA ASH700829.3 SNOW TYPE / SERIAL NO FIELD NGS/TUM 7 11-JUL-05 METH / BY / # / DATE 0.0 DAZI 0.0 80.0 5.0 ZEN1 / ZEN2 / DZEN 2 # OF FREQUENCIES IGS_05 SINEX CODE CONVERTED FROM RELATIVE NGS ANTENNA CALIBRATIONS COMMENT G01 START OF FREQUENCY -0.60 -1.26 68.94 NORTH / EAST / UP NOAZI 0.00 1.36 2.58 3.53 4.22 4.61 4.65 4.51 4.23 - G01 END OF FREQUENCY G02 START OF FREQUENCY 0.80 -2.22 51.86 NORTH / EAST / UP NOAZI 0.00 -2.43 -4.42 -6.10 -7.52 -8.82 -9.93 -10.81 -11.55 - G02 END OF FREQUENCY END OF ANTENNA START OF ANTENNA ANTEX: 1D Ground Antenna Pattern

  7. ANTEX: Range of Satellite Offsets Range of offsets in the current IGS ANTEX file (igs_05.atx, 1994.0 to present) ------------------------------------------------------------------------------ BLOCK I (3) 210.0 0.0 1748.0 [mm] Highest 62 [mm] diff. 210.0 0.0 1686.0 Lowest BLOCK II (9) 279.0 0.0 2744.0 Highest 491 279.0 0.0 2253.0 Lowest BLOCK IIA (19) 279.0 0.0 2676.0 Highest 569 279.0 0.0 2107.0 Lowest BLOCK IIR-A (8) 0.0 0.0 1307.0 Highest 396 0.0 0.0 911.0 Lowest BLOCK IIR-B (4) 0.0 0.0 792.0 Highest 190 0.0 0.0 602.0 Lowest BLOCK IIR-M (1) 0.0 0.0 450.0 (determined using 1 wk. data)

  8. Effects of IGS implementing Absolute PCVs • IGS currently testing Absolute PCVs with parallel finals • IGb00 heights were scaled to match ITRF (VLBI & SLR) • “Antenna + radome” sites may change by few cm • IGS recommends avoiding radomes • GPS tropo estimates should now match VLBI better • Orbits should stay ~ the same due to Kepler’s Laws • IGS Clock files and hence PPP results will change due to shift in TRF scale • Regional Networks may be able to use old Relative PCVs • NEVER mix absolute and relative PCVs (for further details, see IGS Mail 5189, 17 Aug 2005)

  9. Future Work for Orbits/CORS • Improve Ocean Loading Model in site_info • Reprocess all GPS data for 1994-2005 • Iterate orbit processing for IGS early years (1994-1998) • Compare Various Integer-Fixing Techniques • Helmert Blocking software for over 800 CORS • Continue to improve models in Pages for orbits/CORS • Implement post-fit data editing • Add the N-S, E-W Ocean Loading components to Pages • Adopt ANTEX for OPUS/CORS processing • Software for mixed GPS + Galileo (+ GLONASS ?) data

More Related