From: opus@ngs.noaa.gov

Sent: Monday, June 12, 2006 9:01 PM

To: OPUS User

Subject: OPUS solution : f3301420.06o 000496742

FILE: f3301420.06o 000496742

NGS OPUS SOLUTION REPORT

========================

USER: OPUS_User@OPUS_User.com DATE: June 13, 2006

RINEX FILE: f330142m.06o TIME: 01:01:20 UTC

SOFTWARE: page5 0601.10 master22.pl START: 2006/05/22 12:57:00

EPHEMERIS: igs13761.eph [precise] STOP: 2006/05/22 18:10:00

NAV FILE: brdc1420.06n OBS USED: 8703 / 9300 : 94%

ANT NAME: TRM22020.00+GP NONE # FIXED AMB: 52 / 52 : 100%

ARP HEIGHT: 2 OVERALL RMS: 0.019(m)

REF FRAME: NAD_83(CORS96)(EPOCH:2002.0000) ITRF00 (EPOCH:2006.3881)

X: 1382964.836(m) 0.026(m) 1382964.132(m) 0.026(m)

Y: -4637167.377(m) 0.028(m) -4637165.932(m) 0.028(m)

Z: 4141144.041(m) 0.024(m) 4141143.950(m) 0.024(m)

LAT: 40 44 47.88641 0.022(m) 40 44 47.91774 0.022(m)

E LON: 286 36 23.08788 0.017(m) 286 36 23.07673 0.017(m)

W LON: 73 23 36.91212 0.017(m) 73 23 36.92327 0.017(m)

EL HGT: -5.360(m) 0.041(m) -6.621(m) 0.041(m)

ORTHO HGT: 25.653(m) 0.048(m) [Geoid03 NAVD88]

UTM COORDINATES STATE PLANE COORDINATES

UTM (Zone 18) SPC (3104 NY L)

Northing (Y) [meters] 4511872.900 64580.409

Easting (X) [meters] 635620.505 351214.981

Convergence [degrees] 1.04869002 0.39664408

Point Scale 0.99982639 0.99999652

Combined Factor 0.99982723 0.99999736

US NATIONAL GRID DESIGNATOR: 18TXL3562111873(NAD 83)

BASE STATIONS USED

PID DESIGNATION LATITUDE LONGITUDE DISTANCE(m)

AJ4872 LAMT LAMONT EARTH OBS CORS ARP N410016.233 W0735432.057 52028.4

DH5827 CTDA DARIEN CORS ARP N410357.069 W0733025.942 36719.5

AH5048 MOR1 MORICHES 1 CORS ARP N404722.259 W0724446.638 54857.7

NEAREST NGS PUBLISHED CONTROL POINT

KU0606 F 330 N404448. W0732336. 21.7

Information on the three CORS used in the solution.

For each CORS the 4 character designation, formal name, antenna type and serial number are listed. The ITRF00 coordinate at epoch 1997.00 (January 1, 1997) is listed along with its ITRF00 velocity.

The north, east, up (NEU) relationship between the monument, antenna reference point (ARP) and the L1 and L2 antenna phase centers (APC) is listed for the particular antenna. For these three CORS, LAMT, CTDA and MOR1 the ARP is the monument so all the offsets are zeros.

Using the published XYZ velocity and the elapsed time since January 1, 1997 the displacement since 1997.00 is computed. The XYZ relationship of the monument to APR is listed followed by the XYZ relationship of the ARP to L1 APC. Using this information the ITRF00 XYZ coordinate of the L1 APC is computed for the epoch of observation, in this case 2006.3881.

When PAGES processes baselines it does not fix the coordinates of the CORS. Instead they are heavily weighted in the baseline computation. That is why there is an XYZ adjustment listed after the L1 PHS CEN @ 2006.3881. This adjustment is very small, usually less than a millimeter. In each case below it is zero for X, Y and Z.

Using the XYZ adjustment the new L1 APC is computed. Reversing the calculations listed above the ARP and monument coordinates are computed in XYZ followed by those same coordinates transformed to latitude, longitude and ellipsoid height.

All these computations are referenced to ITRF00.

BASE STATION INFORMATION

STATION NAME: lamt a 4 (Lamont Earth Observatory; Palisades, New York U.S

ANTENNA: TRM29659.00 NONE S/N=0220108548

XYZ 1336027.9298 -4631479.3157 4162860.1699 MON @ 1997.0000 (M)

XYZ -0.0169 -0.0018 0.0038 VEL (M/YR)

NEU 0.0000 0.0000 0.0000 MON TO ARP (M)

NEU -0.0000 0.0000 0.1098 ARP TO L1 PHASE CENTER (M)

NEU -0.0000 0.0000 0.1280 ARP TO L2 PHASE CENTER (M)

XYZ -0.1586 -0.0169 0.0357 VEL TIMES 9.3873 YRS

XYZ 0.0000 0.0000 0.0000 MON TO ARP

XYZ 0.0230 -0.0796 0.0720 ARP TO L1 PHASE CENTER

XYZ 1336027.7941 -4631479.4122 4162860.2776 L1 PHS CEN @ 2006.3881

XYZ 0.0000 0.0000 -0.0000 + XYZ ADJUSTMENTS

XYZ 1336027.7941 -4631479.4122 4162860.2776 NEW L1 PHS CEN @ 2006.3881

XYZ 1336027.7712 -4631479.3326 4162860.2056 NEW ARP @ 2006.3881

XYZ 1336027.7712 -4631479.3326 4162860.2056 NEW MON @ 2006.3881

LLH 41 0 16.26497 286 5 27.93043 89.0337 NEW L1 PHS CEN @ 2006.3881

LLH 41 0 16.26497 286 5 27.93043 88.9239 NEW ARP @ 2006.3881

LLH 41 0 16.26497 286 5 27.93043 88.9239 NEW MON @ 2006.3881

STATION NAME: ctda a 2 (Darien; Darien, Connecticut USA)

ANTENNA: TRM29659.00 SCIS S/N=0220260478

XYZ 1367174.0900 -4617635.3598 4167930.9814 MON @ 1997.0000 (M)

XYZ -0.0169 -0.0018 0.0038 VEL (M/YR)

NEU 0.0000 0.0000 0.0000 MON TO ARP (M)

NEU -0.0000 0.0000 0.1065 ARP TO L1 PHASE CENTER (M)

NEU -0.0000 0.0000 0.1258 ARP TO L2 PHASE CENTER (M)

XYZ -0.1586 -0.0169 0.0357 VEL TIMES 9.3873 YRS

XYZ 0.0000 0.0000 0.0000 MON TO ARP

XYZ 0.0228 -0.0770 0.0700 ARP TO L1 PHASE CENTER

XYZ 1367173.9541 -4617635.4537 4167931.0870 L1 PHS CEN @ 2006.3881

XYZ 0.0000 0.0000 -0.0000 + XYZ ADJUSTMENTS

XYZ 1367173.9542 -4617635.4537 4167931.0870 NEW L1 PHS CEN @ 2006.3881

XYZ 1367173.9314 -4617635.3767 4167931.0171 NEW ARP @ 2006.3881

XYZ 1367173.9314 -4617635.3767 4167931.0171 NEW MON @ 2006.3881

LLH 41 3 57.10139 286 29 34.04624 -14.4085 NEW L1 PHS CEN @ 2006.3881

LLH 41 3 57.10139 286 29 34.04624 -14.5150 NEW ARP @ 2006.3881

LLH 41 3 57.10139 286 29 34.04624 -14.5150 NEW MON @ 2006.3881

STATION NAME: mor1 a 4 (Moriches 1; Moriches, New York USA)

ANTENNA: ASH700829.3 SNOW S/N=10822

XYZ 1434337.0141 -4618264.0286 4144738.9947 MON @ 1997.0000 (M)

XYZ -0.0163 -0.0025 0.0028 VEL (M/YR)

NEU 0.0000 0.0000 0.0000 MON TO ARP (M)

NEU -0.0000 0.0000 0.0877 ARP TO L1 PHASE CENTER (M)

NEU -0.0000 0.0000 0.0598 ARP TO L2 PHASE CENTER (M)

XYZ -0.1530 -0.0235 0.0263 VEL TIMES 9.3873 YRS

XYZ 0.0000 0.0000 0.0000 MON TO ARP

XYZ 0.0197 -0.0634 0.0573 ARP TO L1 PHASE CENTER

XYZ 1434336.8808 -4618264.1155 4144739.0783 L1 PHS CEN @ 2006.3881

XYZ 0.0000 0.0000 0.0000 + XYZ ADJUSTMENTS

XYZ 1434336.8808 -4618264.1155 4144739.0783 NEW L1 PHS CEN @ 2006.3881

XYZ 1434336.8611 -4618264.0521 4144739.0210 NEW ARP @ 2006.3881

XYZ 1434336.8611 -4618264.0521 4144739.0210 NEW MON @ 2006.3881

LLH 40 47 22.29056 287 15 13.35099 -24.0284 NEW L1 PHS CEN @ 2006.3881

LLH 40 47 22.29056 287 15 13.35099 -24.1161 NEW ARP @ 2006.3881

LLH 40 47 22.29056 287 15 13.35099 -24.1161 NEW MON @ 2006.3881

Remote Station Computations

The first section lists the station name and antenna type. The XYZ coordinate is an initial estimate used in the baseline computation. This coordinate is at the epoch of observation. The antenna height submitted to OPUS and the relationship between the ARP and L1 and L2 APCs, referenced to the local NEU, are listed similar to the CORS. This is followed by the same information referenced to XYZ. Using this information an initial coordinate for the L1 APC is computed.

REMOTE STATION INFORMATION

STATION NAME: f330 1

ANTENNA: TRM22020.00+GP NONE S/N=UNKNOWN

XYZ 1382967.2014 -4637167.3079 4141144.7270 MON @ 2006.3878 (M)

NEU 0.0000 -0.0000 2.0000 MON TO ARP (M)

NEU -0.0000 0.0000 0.0742 ARP TO L1 PHASE CENTER (M)

NEU -0.0000 0.0000 0.0705 ARP TO L2 PHASE CENTER (M)

XYZ 0.4330 -1.4520 1.3054 MON TO ARP

XYZ 0.0161 -0.0539 0.0484 ARP TO L1 PHASE CENTER

XYZ 1382967.6505 -4637168.8138 4141146.0809 L1 PHS CEN @ 2006.3881

For each of three baselines, XYZ adjustments are computed based on the PAGES baseline processing. These adjustments are added to the initial estimate of the L1 APC coordinate for the remote station to arrive at a new L1 APC at the epoch of observation. Using the XYZ relationships between the L1 APC, ARP and monument, the ARP and monument coordinates are computed from the new L1 APC coordinate. This results in three coordinates for the remote station. The arithmetic mean of these three ITRF00 coordinates is listed in the standard output as the ITRF00 coordinate of the remote station.

BASELINE NAME: lamt f330

XYZ -3.0863 1.3936 -0.7847 + XYZ ADJUSTMENTS

XYZ 1382964.5642 -4637167.4201 4141145.2962 NEW L1 PHS CEN @ 2006.3881

XYZ 1382964.5481 -4637167.3663 4141145.2478 NEW ARP @ 2006.3881

XYZ 1382964.1151 -4637165.9143 4141143.9423 NEW MON @ 2006.3881

LLH 40 44 47.91801 286 36 23.07625 -4.5684 NEW L1 PHS CEN @ 2006.3881

LLH 40 44 47.91801 286 36 23.07625 -4.6426 NEW ARP @ 2006.3881

LLH 40 44 47.91801 286 36 23.07625 -6.6426 NEW MON @ 2006.3881

BASELINE NAME: ctda f330

XYZ -3.0615 1.3672 -0.7856 + XYZ ADJUSTMENTS

XYZ 1382964.5890 -4637167.4466 4141145.2953 NEW L1 PHS CEN @ 2006.3881

XYZ 1382964.5730 -4637167.3927 4141145.2469 NEW ARP @ 2006.3881

XYZ 1382964.1399 -4637165.9407 4141143.9414 NEW MON @ 2006.3881

LLH 40 44 47.91730 286 36 23.07695 -4.5445 NEW L1 PHS CEN @ 2006.3881

LLH 40 44 47.91730 286 36 23.07695 -4.6187 NEW ARP @ 2006.3881

LLH 40 44 47.91730 286 36 23.07695 -6.6187 NEW MON @ 2006.3881

BASELINE NAME: mor1 f330

XYZ -3.0601 1.3658 -0.7615 + XYZ ADJUSTMENTS

XYZ 1382964.5904 -4637167.4480 4141145.3194 NEW L1 PHS CEN @ 2006.3881

XYZ 1382964.5744 -4637167.3941 4141145.2709 NEW ARP @ 2006.3881

XYZ 1382964.1413 -4637165.9421 4141143.9655 NEW MON @ 2006.3881

LLH 40 44 47.91786 286 36 23.07699 -4.5274 NEW L1 PHS CEN @ 2006.3881

LLH 40 44 47.91786 286 36 23.07699 -4.6016 NEW ARP @ 2006.3881

LLH 40 44 47.91786 286 36 23.07699 -6.6016 NEW MON @ 2006.3881

The G-File

This is a highly formatted file, used by the NGS, that has the vector components and the correlation matrix. For more information on the format of the G-File see: http://www.ngs.noaa.gov/FGCS/BlueBook/pdf/Annex_N.pdf.

This file can be cut and pasted into a text file. Many least squares adjustment software can read this file.

G-FILES

Axx2006 522 6 522

B2006 5221256 6 52218 9 1 page5 v0601.10IGS 222 1 2 27NGS 2006 612IFDDFX

Iant_info.003 NGS 20060427

C00090001 -469363439 10 56865817 24 217162632 22 X1426AF330X1426ALAMT

D 1 2 -6047891 1 3 5301999 2 3 -9326618

Axx2006 522 6 522

B2006 5221256 6 52218 9 1 page5 v0601.10IGS 222 1 2 27NGS 2006 612IFDDFX

Iant_info.003 NGS 20060427

C00090002 -157902086 10 195305640 26 267870756 25 X1426AF330X1426ACTDA

D 1 2 -8311153 1 3 4448514 2 3 -7622031

Axx2006 522 6 522

B2006 5221256 6 52218 9 1 page5 v0601.10IGS 222 1 2 27NGS 2006 612IFDDFX

Iant_info.003 NGS 20060427

C00090003 513727198 12 189018900 28 35950555 26 X1426AF330X1426AMOR1

D 1 2 -6526903 1 3 7060567 2 3 -9249545

Satellite Information

The individual RMS values are given for each satellite observed. Using this information, the observations from a problem satellite could be isolated. The observations from a problem satellite could be removed from the RINEX file and the RINEX file resubmitted to OPUS.

POST-FIT RMS BY SATELLITE VS. BASELINE

OVERALL 02 04 05 06 07 08 09 10

lamt-f330| 0.017 0.013 0.022 0.018 0.018 0.026 0.017 0.019 0.027

13 14 15 18 21 22 26 29 30

lamt-f330| ... ... ... 0.015 0.017 0.018 0.014 0.014 0.022

OVERALL 02 04 05 06 07 08 09 10

ctda-f330| 0.019 0.012 0.021 0.015 0.019 0.027 0.023 0.019 0.028

13 14 15 18 21 22 26 29 30

ctda-f330| ... ... ... 0.022 0.020 0.023 0.018 0.016 0.025

OVERALL 02 04 05 06 07 08 09 10

mor1-f330| 0.020 0.019 0.026 0.017 0.022 0.023 0.022 0.025 0.025

13 14 15 18 21 22 26 29 30

mor1-f330| ... ... ... 0.017 0.019 0.018 0.017 0.015 0.021

The total number of observations from each satellite is listed.

OBS BY SATELLITE VS. BASELINE

OVERALL 02 04 05 06 07 08 09 10

lamt-f330| 2847 248 108 54 413 132 51 163 23

13 14 15 18 21 22 26 29 30

lamt-f330| ... ... ... 126 338 55 494 533 109

OVERALL 02 04 05 06 07 08 09 10

ctda-f330| 2969 250 120 53 415 124 72 183 61

13 14 15 18 21 22 26 29 30

ctda-f330| ... ... ... 133 341 74 496 538 109

OVERALL 02 04 05 06 07 08 09 10

mor1-f330| 2887 251 122 51 416 120 62 172 65

13 14 15 18 21 22 26 29 30

mor1-f330| ... ... ... 118 341 56 497 527 89

Covariance Matrix

This is the covariance matrix of the point solution. The covariance matrix is given referenced to ITRF XYZ and local NEU. The diagonal elements are the variances of the XYZ or NEU coordinate as appropriate. The off diagonal elements are the covariances between the elements.

The covariance matrix can be used to include the OPUS point solution in a least squares adjustment using the methods outlined at: http://www.plazio.net/Least%20Squares/OPUS%20Combinations/Using%20Contrived%20Zero%20Observations%20Discussion.html

Covariance Matrix for the xyz OPUS Position (meters^2).

0.0000007644 -0.0000001290 0.0000000996

-0.0000001290 0.0000045244 -0.0000003692

0.0000000996 -0.0000003692 0.0000039667

Covariance Matrix for the enu OPUS Position (meters^2).

0.0000010009 0.0000005917 -0.0000007069

0.0000005917 0.0000037249 -0.0000000997

-0.0000007069 -0.0000000997 0.0000045298

The horizontal network accuracy is computed using the method detailed in Leenhouts, P.P. (1985). “On the computation of bi-normal radial error”.Navigation, Vol. 32, No. 1, pp. 16-28. This is the radius of a circle with a 95% confidence interval. The vertical network accuracy is the 1.95(). is the square root of 3,3 element in the enu covariance matrix.

These estimates are usually very optimistic.

Horizontal network accuracy = 0.00398 meters.

Vertical network accuracy = 0.00417 meters.

NAD83 Computations

Using HTDP (http://www.ngs.noaa.gov/TOOLS/Htdp/Htdp.html), the ITRF00 positions of the CORS and remote station are transformed to NAD83 at epoch 2002.0000. Using the NAD83 XYZ coordinate of the remote station and the NAD83 XYZ coordinate of the CORS, a vector is computed from the remote station to each CORS.

This is a change since the publication of Computing NAD83 Coordinates Using ITRF-Derived Vector Components: (http://www.ngs.noaa.gov/CORS/Articles/FIGSoler.doc)

Derivation of NAD 83 vector components

Position of reference station ARP in NAD_83(CORS96)(EPOCH:2002.0000).

Xa(m) Ya(m) Za(m)

LAMT 1336028.47557 -4631480.77191 4162860.29437 2002.00

CTDA 1367174.63622 -4617636.81709 4167931.10493 2002.00

MOR1 1434337.56412 -4618265.49607 4144739.11509 2002.00

Position of reference station monument in NAD_83(CORS96)(EPOCH:2002.0000).

Xr(m) Yr(m) Zr(m)

LAMT 1336028.47557 -4631480.77191 4162860.29437 2002.00

CTDA 1367174.63622 -4617636.81709 4167931.10493 2002.00

MOR1 1434337.56412 -4618265.49607 4144739.11509 2002.00

Velocity of reference station monument in NAD_83(CORS96)(EPOCH:2002.0000).

Vx (m/yr) Vy (m/yr) Vz (m/yr)

LAMT -0.00000 0.00000 0.00010

CTDA -0.00000 0.00000 -0.00000

MOR1 0.00050 -0.00070 -0.00130

Vectors from unknown station monument to reference station monument

in NAD_83(CORS96)(EPOCH:2002.0000).

Xr-X= DX(m) Yr-Y= DY(m) Zr-Z= DZ(m)

LAMT -46936.36043 5686.60509 21716.25337 2002.00

CTDA -15790.19978 19530.55991 26787.06393 2002.00

MOR1 51372.72812 18901.88093 3595.07409 2002.00

State Plane Coordinates

STATE PLANE COORDINATES - U.S. Survey Foot

SPC (3104 NY L)

Northing (Y) [feet] 211877.559

Easting (X) [feet] 1152277.817

Convergence [degrees] 0.39664408

Point Scale 0.99999652

Combined Factor 0.99999736

Disclaimer

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.