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Arc Files:
Best file with nav in ArcInfo E00 format
0.1 Mb
Digital Data:
Integrated navigation (SINS) data l-d2-09-sf.050 0.1 Mb Provisional best file
 Preliminary GPS (RTK values) from Tom Reiss, e-mailed 10/07/2009.
 I collected 15-20 minutes of raw data for post processing so these values may change a little.
 (We did not survey the two reflector positions)
 AST1 (Aerial Survey Target #1)
 Location: concrete support structure of Hetch-Hetchy pipeline. Center of concrete mass
 Latitude:     37d 29m 22.86394s
 Longitude: 122d 07m 33.60521s
 O. Ht:       4.532m
 HHBM (Hetch-Hetchy BenchMark)
 Location: concrete support structure of Hetch-Hetchy pipeline. North-east corner of concrete mass
 Latitude:     37d 29m 22.90750s
 Longitude: 122d 07m 33.56190s
 O. Ht:       4.587m
 They were obtained using a GPS receiver on RAV3 (Towill #3) with the folowing coordinates:
 Latitude:     37d 29m 55.62946s
 Longitude: 122d 07m 42.47334s
 O. Ht:       2.438m
 Source Coordinate System: Coordinate System: NAD83(NSRS2007)
 Datum: NAD83 (National Spatial Reference System 2007)
 Ellipsoid: GRS 1980
 Semi-major axis(meters): 6378137.00000000
 Semi-minor axis(meters): 6356752.31414036
 Eccentricity: 0.08181919104281582
 Eccentricity Squared: 0.0066943800229007921
 Inverse Flattening: 298.257222101
 Inverse Flattening Definitive: True
 Vertical Reference: NAVD88 via NGS Height Mod Project (on NAD83)
 Vertical Datum: North American Vertical Datum of 1988
No analog holdings.

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Navigation data nav    
Times   050.times    
LD209SF map of where navigation equipment operated

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Page Last Modified: Sun Aug 25 10:00:45 PDT 2013  (chd)