Comments:
Sacramento River SWATH Bathymetry Survey (S-03-11-CA)
SWATH Bathymetry Survey Control
Survey control was established utilizing a single one-hour static GPS occupation on a pre-existing benchmark
at the water pump station near the center of the study area. The occupation survey was conducted on 01/28/2011
(JD 2011-028). The GPS data was sent to OPUS-R (http://ngs.noaa.gov/OPUS) with the results shown below:
************************************************************************************************************
OPUS output file: "opus-PUMP-2011-028"
FILE: BPUMPA11.028 000201813
6011 Warning - OPUS-RS was able to find a set of reference stations
6011 with data suitable for use with your dataset. However, your
6011 position does not fall within the polygon enclosing these reference
6011 stations. This means that the geographic interpolation algorithms
6011 performed within OPUS-RS must instead perform extrapolation.
6011 Extrapolation, especially if your position is far from the
6011 reference stations, is prone to error. Use this solution with
6011 caution.
Your station is 8.2 KM outside the polygon enclosing the reference stations.
NGS OPUS-RS SOLUTION REPORT
========================
USER: treiss@usgs.gov DATE: January 30, 2011
RINEX FILE: pump028u.11o TIME: 07:23:40 UTC
SOFTWARE: rsgps 1.35.1 RS32.prl 1.66 START: 2011/01/28 20:52:49
EPHEMERIS: igr16205.eph [rapid] STOP: 2011/01/28 22:00:35
NAV FILE: brdc0280.11n OBS USED: 7641 / 8433 : 91%
ANT NAME: ASH701975.01A QUALITY IND. 29.95/ 47.87
ARP HEIGHT: 1.800 NORMALIZED RMS: 0.306
REF FRAME: NAD_83(CORS96)(EPOCH:2002.0000) ITRF00 (EPOCH:2011.07642)
X: -2612656.425(m) 0.016(m) -2612657.276(m) 0.016(m)
Y: -4237702.909(m) 0.017(m) -4237701.565(m) 0.017(m)
Z: 3973650.577(m) 0.017(m) 3973650.589(m) 0.017(m)
LAT: 38 47 2.72072 0.005(m) 38 47 2.73519 0.005(m)
E LON: 238 20 42.23351 0.011(m) 238 20 42.17427 0.011(m)
W LON: 121 39 17.76649 0.011(m) 121 39 17.82573 0.011(m)
EL HGT: -17.002(m) 0.026(m) -17.538(m) 0.026(m)
ORTHO HGT: 13.358(m) 0.035(m) [NAVD88 (Computed using GEOID09)]
UTM COORDINATES STATE PLANE COORDINATES
UTM (Zone 10) SPC (0402 CA 2)
Northing (Y) [meters] 4293676.217 624096.837
Easting (X) [meters] 616827.008 2029980.141
Convergence [degrees] 0.84262685 0.21755247
Point Scale 0.99976807 0.99992836
Combined Factor 0.99977074 0.99993103
US NATIONAL GRID DESIGNATOR: 10SFH1682793676(NAD 83)
BASE STATIONS USED
PID DESIGNATION LATITUDE LONGITUDE DISTANCE(m)
DG5210 PLSB WOODLAND COOP CORS ARP N384106.128 W1214545.139 14437.7
AF9711 SUTB SUTTER BUTTES CORS ARP N391220.994 W1214914.100 48976.1
DK3587 CHO5 CHICO 5 CORS ARP N392557.483 W1213953.809 72004.7
DK6396 P206 CRAZYCREEKCN2006 CORS ARP N384640.123 W1223432.798 80019.1
DG8210 P261 HUNTERHILLCN2004 CORS ARP N380910.640 W1221303.086 85550.0
DH7229 P198 PETALUMAIRCN2004 CORS ARP N381535.528 W1223626.762 101417.1
DK6402 P336 HUBBARDRDGCN2007 CORS ARP N393141.072 W1222549.684 106375.6
DH3879 P224 SIBLEYVOLCCN2005 CORS ARP N375150.009 W1221308.558 113433.7
DH9024 P225 CULLCANYONCN2005 CORS ARP N374249.899 W1220329.923 123931.6
NEAREST NGS PUBLISHED CONTROL POINT
AI5063 FREMONT N384552.894 W1213808.007 2736.8
This position and the above vector components were computed without any
knowledge by the National Geodetic Survey regarding the equipment or
field operating procedures used.
************************************************************************************************************
************************************************************************************************************
The solution determined by OPUS-R appears acceptable and well within SWATH survey requirements.
The ITRF00 coordinates obtained from the OPUS solution were converted to the WGS84(G1150) reference
frame/datum (epoch date: 1/1/2011) utilizing the software program "Blue Marble Geographic Desktop". The
captured output from this conversion process is given below:
************************************************************************************************************
workspace Coordinate Transformation Report
2/1/2011 6:38:19 AM
Blue Marble Desktop
Blue Marble Geographics
"Where GIS Data Conversion Solutions are Born"
397 Water Street, Suite 100, Gardiner, Maine 04345 U.S.A.
Sales: U.S. and Canada Only: 1-800-616-2725 All Other Countries: 001-207-582-6747 Fax: 1-207-582-7001
Website: www.bluemarblegeo.com
Sales: geoinfo@bluemarblegeo.com Support: geohelp@bluemarblegeo.com
Datasource: C:\Documents and Settings\All Users\Application Data\Blue Marble Geographics\Blue Marble Desktop\DataSource\geodata.xml
--------------------------------------
Conversion -- 2/1/2011 6:40:08 AM
Source Coordinate System
Coordinate System: ITRF 00 Coordinate System
Datum: ITRF 2000
Date: 1/28/2011
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: Ellipsoidal Height
Datum Transformation:
source_epoch: 2011.07671232877
target_epoch: 2011.00273972603
Target Coordinate System
Coordinate System: WGS84_G1150 Coordinate System
Datum: WGS_84(G1150)
Date: 1/1/2011
Ellipsoid: WGS 1984
Semi-major axis(meters): 6378137.00000000
Semi-minor axis(meters): 6356752.31424518
Eccentricity: 0.08181919084262157
Eccentricity Squared: 0.00669437999014133
Inverse Flattening: 298.257223563
Inverse Flattening Definitive: True
Vertical Reference: Ellipsoidal Height
Source Point Name: "PUMP-OPUS-2011-028"
Geodetic latitude (Degree): N38 47 02.73519
Geodetic longitude (Degree): W121 39 17.82573
Height (Meter): -17.538
Orthometric Height Scale: 01.000002757345513
Source Lat/Lon
Latitude (Degrees) N38 47 02.73519
Longitude (Degrees) W121 39 17.82573
Height (Meters) -17.538
Target Lat/Lon
Latitude (Degrees) N38 47 02.73520
Longitude (Degrees) W121 39 17.82566
Height (Meters) -17.538
Target Point Name: "PUMP-OPUS-2011-028"
Geodetic latitude (Degree): N38 47 02.73520
Geodetic longitude (Degree): W121 39 17.82566
Height (Meter): -17.538
Orthometric Height Scale: 01.000002757338511
************************************************************************************************************
In summary, the following coordinates were entered into the RTK GPS base station:
Station Name: "PUMP"
Reference Frame: WGS84(G1150)
Epoch Date: 2011.00273972603 (1/1/2011)
Geodetic latitude (Degree): N38 47' 02.73520"
Geodetic longitude (Degree): W121 39' 17.82566"
Ellipsoid Height (Meter): -17.538m
