信息采集和处理Acquisition.pptVIP

Acquisition Processing您的标题 PPK Analysis Tides NRTK Multibeam Processing PPK Analysis PPK Analysis RMS of GPS heights PPK Analysis Local Storm Events PPK Analysis H-RMS vs PDOP PPK Analysis Ashtech comparison Simultaneous static observation PPK Analysis Conclusions… Poor weather is a precursor to poor PPK (at rover or base) Good weather is not a sufficient condition for good PPK Difficult to correlate predicted PDOP spikes with poor PPK The equipment may be faulty…PE worthy? Tides Tides Vertical Datum established through static GPS observations at Bench Marks Sounding Datum then determined by using recovered relationship (From class of 05) between NAVD 88 and local SD Further analysis conducted using T-Tide to determine constituents Leveling Sounding Datum Sounding Datum transfer (Diurnal tides) Previous Transfer conducted by class of 05 Sounding Datum As a check to this, a Diurnal SD transfer was conducted using constituents Comparison Tidal Analysis Tidal Analysis Tidal Analysis Tidal Analysis NRTK The Gulf Coast Geospatial Center loaned us a Trimble R7 with TSC2 controller This piece of equipment was deemed useless for our purposes because: Static Tide Obs Fledermaus / CUBE Key CUBE Assumptions Processing Facts 451,956 CUBE bins With 1m Bins: 451,956 m2 Checked Areas: 105,042 m2 – 23% Checked 45,070 Edited CUBE bins – 10% Changed 38,399,520 Total Soundings 30,008,414 Accepted Soundings 8,391,106 Rejected Soundings – 22% Rejected CUBE Validation Time: 18hrs Dot Killing at 10 dots a second – 233hrs Shoreline Preparation Aerial Photographs Mississippi Geospatial Clearinghouse February 14, 2007 Scale: 1 to 100 15 cm ground sample distance Orthorectified to the Mississippi State Plane Coordinate System Datum: NAD 83 and NAVD 88 CARIS Notebook COALNE 1:3,000 Shoreline Acquisition Shoreline files converted from .hob to .000 Loaded in to HYPACK and QINsy as background files Shoreline visually verified during SBES, SSS, and MBES acquisition Processing S-57 Com