Weston, N.D., G.L. Mader, and T. Soler (2007). OPUS Projects - A Web-based application to administer and process multi-day GPS campaign data, Proc. FIG Working Week, Hong Kong, May 13-17, 10p.

Weston, N.D., T. Soler, and G.L. Mader (2007). Web-based solution for GPS data. NOAA OPUS, GIM International, 21(4), 23-25

Snay, R., M. Cline, W. Dillinger, R. Foote, S. Hilla, W. Kass, J. Ray, J. Rohde, G. Sella, and T. Soler (2007). Using global positioning system-derived crustal velocities to estimate rates of absolute sea level change from North American tide gauge records, J. Geophys. Res., 112(B04409), 1-11

Martin, D. (2007). Geodetic connections. OPUS Rapid Static, The American Surveyor, 4(3), 44, 46-48

Ray, J., D. Crump, & M. Chin (2007). New Global Positioning System reference station in Brazil, GPS Solutions, 11(1), 1-10

Stone, W (2006). The evolution of the National Geodetic Survey's Continuously Operating Reference Station network and Online Positioning User Service, Proc. 2006 ION-IEEE Position, Location, and Navigation Symp., April 25-27, San Diego, CA, 653-663

Soler, T., & A. Hernández-Navarro (2006). OPUS becomes available in Mexico, The American Surveyor, 3(9), 46-49

Schwarz, C.R. (2006). Statistics of range of a set of normally distributed numbers, J. Surv. Eng., 132(4), 155-159

Soler, T., N.D. Weston, R.A. Snay, G.L. Mader & R.H. Foote (2006). Precise georeferencing using the On-line Positioning User Service (OPUS), Proc. XXIII International FIG Congress, 8-13 October 2006, Munich, Germany, 12p.

Soler, T., P. Michalak, N.D. Weston, R.A. Snay & R.H. Foote (2006). Accuracy of OPUS solutions for 1- to 4-h observing sessions, GPS Solutions, 10(1), 45-55.

Ray, J., M. Morrison, S. Hilla, W. Dillinger & G. Mader (2005). Geodetic sensitivity to surface meteorological data: 24-hr and 6-hr observing sessions, GPS Solutions, 9(1), 12-20.

McGowan, Steve (2004). Ohio DOT's VRS Network, Professional Surveyor, 24(12), 8, 9,12, 14.

Hilla, S. & M. Cline (2004). Evaluating pseudorange multipath effects at stations in the National CORS network, GPS Solutions, 7(4), 253-267.

Mader, G.L., N.D. Weston, M.L. Morrison, & D.G. Milbert (2003). The On-line Positioning User Service (OPUS), Professional Surveyor, 23(5), 26, 28, 30.

Soler, T., R.A. Snay, R.H. Foote & M.W. Cline (2003). Maintaining accurate coordinates for the National CORS network, Proc. FIG Working Week, Paris, France, April 13-17, 8 p.

Mader, G.L. & M.L. Morrison (2002). Using Interpolation and Extrapolation Techniques to Yield High Data Rates and Ionosphere Delay Estimates from Continuously Operating GPS networks, Proc. ION-GPS 2002, Portland, OR, September 24-27, 2342-2348.

Snay, R., G. Adams, M. Chin, S. Frakes, T. Soler & N. Weston (2002). The synergistic CORS program continues to evolve, Proc. ION-GPS 2002, Portland, OR, September 24-27, 2630-2639.

Snay, R.A., T. Soler & M. Eckl (2002). GPS precision with carrier phase observations: Does distance and/or time matter?, Professional Surveyor, 22(10), 20, 22, 24.

Eckl, M.C., R. Snay, T. Soler, M.W. Cline & G.L. Mader (2001). Accuracy of GPS-derived relative positions as a function of interstation distance and observing-session duration, Journal of Geodesy, 75(12),633-640.

Gan, W., W.H. Prescott (2001). Crustal deformation rates in central and eastern U.S. inferred from GPS, Geophysical Research Letters, 28, 3733-3736.

Bruton, A.M., M.M.R. Mostafa & B. Scherzinger (2001). Airborne DGPS without dedicated base stations for mapping applications, Proc. ION-GPS 2001, Salt Lake city, UT, Sept 11-14.

Mostafa, M.M.R. & J. Hutton (2001). Airborne kinematic positioning and attitude determination without base stations, Proc. International Symposium on Kinematic Systems in Geodesy, Geomatics, and navigation, Banff, Alberta, Canada, June 4-8, 2001.

Marshall, J., M. Schenewerk, R. Snay & S. Gutman (2001). The effect of the MAPS weather model on GPS-determined ellipsoidal heights, GPS Solutions, 5(1), 1-14.

Schenewerk, M.J., J. Marshall & W. Dillinger (2001). Vertical ocean-loading deformation derived from a global GPS network,J. Geodetic Soc. of Japan, 47(1).

Soler, T., R.E. Johnson, L.F. Thormahlen & R.H. Foote (2001). Combining two GPS techniques: Parting the waters,GPS World, 12(5), 28-30, 31.

Snay, R.A. (2000). The National and Cooperative CORS systems in 2000 and beyond, Proc. ION GPS-2000, Salt Lake City, UT, September 19-22, 55-58.

Soler, T., R.H. Foote, D. Hoyle & V. Bocean (2000). Accurate GPS orientation of a long baseline for neutrino oscillation experiments at Fermilab, Geophysical Research Letters, 27(23), 3921-3924.

Snay, R.A. & N.D. Weston (1999). Future directions of the National CORS system. Proc. 55^th Annual Meeting of the Institute of Navigation, Cambridge, MA, June 28-30, 301-305.

Soler, T., N.S. Doyle & L.W. Hall (1999). Rigorous transformation of GPS-determined vector components, Proc. ION GPS-99, Nashville, TN, September 14-17, 27-32.

Spofford, P.R. & N.D. Weston (1998). National Geodetic Survey Continuously Operating Reference Station project. Status and Plans. ACSM Bulletin, 172, 20-25.

Cheves, M. (1997). CORS update, Professional Surveyor, 17(2), 34-35.

Cheves, M. (1996). No-cost GPS observations available nationally, Professional Surveyor, 16(2), 6, 8, 10.

Cheves, M. (1996). CORS - A case study of a 1-man GPS crew, Professional Surveyor, 16(2), 10, 12, 13.

Cooperative CORS

Prusky, J. (2001). The Cooperative CORS Program, Professional Surveyor, 21(1), 14, 16, 22.

Tectonic Applications of CORS Data

Sella, G.F., S. Stein, T.H. Dixon, M. Craymer, T.S. James, S. Mazzotti & R.K. Dokka (2007). Observation of glacial isostatic adjustment in "stable" North America with GPS, Geophys. Res. Lett., 34(L02306), 1-6.

Dixon, T.H., F. Amelung, A. Ferretti, F. Novali, F. Rocca, R. Dokka, G. Sella, S.-W. Kim, S. Wdowinski & D. Whitman (2006). Subsidence and flooding in New Orleans. A subsidence map of the city offers insight into the failure of the levees during Hurricane Katrina, Nature, 441, 587-588. Supplementary information

Dokka, R.K, G.F. Sella & T.H. Dixon (2006). Tectonic control of subsidence and southward displacement of southeast Lousiana with respect to stable North America, Geophys. Res. Lett., 33(L23308), 1-5.

Coordinate Systems

A series of four papers about Terrestrial Reference Systems

1. Snay, R.A. & T. Soler (1999). Part 1 - Modern Terrestrial Reference Systems. Professional Surveyor, 19(10), 32-33.
   
2. Snay, R.A. & T. Soler (2000). Part 2 - The evolution of NAD83. Professional Surveyor, 20(2), 16, 18.
   
3. Snay, R.A. & T. Soler (2000). Part 3 - WGS 84 and ITRS. Professional Surveyor, 20(3), 24, 26, 28.
   
4. Snay, R.A. & T. Soler (2000). Part 4 - Practical considerations for accurate positioning. Professional Surveyor, 20(4), 32-34.

Reference Frames

Ray, J., Z. Altamimi, X. Collilieux & T. van Dam (2008). Anomalous harmonics in the spectra of GPS position estimates, GPS Solutions, 12, 55-64.

Collilieux, X., Z. Altamimi, D. Coulot, J. Ray & P. Sillard (2007). Comparison of very long baseline interferometry, GPS, and satellite laser ranging height residuals from ITRF2005 using spectral and correlation methods, J. Geophys. Res., 112(B12403), 1-18.

Ray, J., J. Kouba & Z. Altamimi (2005). Is there utility in rigorous combination of VLBI and GPS EOPs?, Journal of Geodesy, 79(9), 505-511.

Ray, J. & Z. Altamimi (2005). Evaluation of co-location ties relating the VLBI and GPS reference frames, Journal of Geodesy, 79, 189-195.

Ray, J., D. Dong & Z. Altamimi (2004). IGS reference frames: status and future improvements, GPS Solutions, 8(4), 251-266.

Timing

Senior, K.L., Ray, J.R., & Beard, R.L. (2008). Characterization of periodic variations in the GPS satellite clocks, GPS Solutions, 12(3), 211-225.

Ray, J., & K. Senior (2005). Geodetic techniques for time and frequency comparisons using GPS phase and code measurements, Metrologia, 42(4), 215-232.

Transformations of frames and vectors

Soler, T. (2006). What is the relationship between the NAD83 and WGS84 coordinates? GPS World - Discussion Forums, 12-05-2006.

van Gelder, B.H.W. & Soler, T. (2005). Effects of errors in coordinates on transformation parameters [Discussion], J. Surv. Engrg., ASCE, 131(4), 143-143.

Soler, T. & R.A. Snay (2004). Transforming positions and velocities between the International Terrestrial Reference Frame of 2000 and North American Datum of 1983, J. Surv. Engrg., ASCE, 130(2), 49-55.

Snay, R.A. (2003). Horizontal Time-Dependent Positioning, Professional Surveyor, 23(11), 30, 32, 34.

Snay, R.A. (2003). Introducing two spatial reference frames for regions of the Pacific Ocean, Surveying and Land Information Science, 63(1), 5-12.

Soler, T. & J. Marshall. (2003). A note on frame transformations with applications to geodetic datums, GPS Solutions, 7(1), 23-32.

Soler, T. & J. Marshall. (2002). Rigorous transformation of variance-covariance matrices of GPS-derived coordinates and velocities, GPS Solutions, 6(1-2), 76-90.

Soler, T., N.D. Weston, & H. Han. (2002). Computing NAD 83 coordinates using ITRF-derived vector components, Proc. XXII FIG International Congress, ACSM/ASPR Annual Conference, April 19-26, Washington D.C., 6 pg.

Soler, T. (2001). Densifying 3D GPS networks by accurate transformation of vector components, GPS Solutions, 4(3), 27-33.

Snay, R.A. (1999). Using HTDP software to transform spatial coordinates across time and between reference frames, Surveying and Land Information Systems, 59(1), 15-25.

Soler, T. (1998). A compendium of transformation formulas useful in GPS work, Journal of Geodesy, 72(7-8), 482-490.

Soler, T. & L.D. Hothem (1988). Coordinate systems used in geodesy: Basic definitions and concepts, J. Surv. Engrg., ASCE, 114(2), 84-97.

Soler, T. & S.D. Johnson (1988). On stellar proper motion and its updating, Manuscripta Geodaetica., 13(1), 40-46.

Soler, T. & B.H.W. van Gelder (1987). On differential scale changes and the satellite Doppler system z-shift, Geophys. J.R. astr. Soc., 91, 639-656.

Soler, T. & S.D. Johnson (1987). Alternative geometric determination of altazimuthal-distance covariance matrices, J. Surv. Eng., 113(2), 57-69.

Soler, T. & M. Chin (1985). On transformation of covariance matrices between local Cartesian coordinate systems and commutative diagrams, Technical Papers. 45th Annual Meeting ACSM, Washington, D.C., March 10-15, 1985, 393-406.

Soler, T. (1984). A new matrix development of the potential and attraction at exterior points as a function of the inertia tensors, Celestial Mechanics, 32, 257-296.

Soler, T. & I.I. Mueller (1980). Global plate tectonics and the secular motion of the pole, Nutation and the Earth's Rotation, IAU Symposium no. 78 243-244.

Soler, T. (1976). On differential transformations between Cartesian and curvilinear (geodetic) coordinates, Depart. of Geodetic Science, Report no. 236. The Ohio State University, Columbus, Ohio.

Other GPS applications

Galen, S. & P. Hensel (2007). Geodesy on the water's edge: Applications of accurate heights in the coastal zone, Hydro Int., 11(5), 16-18.

Soler, T. & R.J. Fury (2000). GPS alignment survey and meridian convergence, J. Surv. Engrg., ASCE, 126(3), 69-82.

Soler, T., L.W. Hall & C.K. Reed (1998). Establishment of a high accuracy reference geodetic network in the Caribbean, Surv. and Land Inf. Systems, 58(1), 13-24.

Soler, T., G. Álvarez-García, A. Hernández-Navarro & R. Foote(1996). GPS high accuracy networks in Mexico, J. Surv. Eng, ASCE, 122(2), 80-94.

Soler, T., W.E. Strange, & L.D. Hothem (1992). Accurate determination of Cartesian coordinates at geodetic stations using the Global Positioning System, Geophys. Res. Lett., 19(6), 533-536.

Soler, T., J.D. Love, L.W. Hall & R.H. Foote (1992). GPS results from statewide high precision networks in the United States, Proc. Sixth Int. Geodetic Symp. on Satellite Positioning, The Ohio State University, 17-20 Sept., 573-582.

Soler, T., W.E. Strange & J.S. Ferguson (1991). Geodetic coordinate systems in Florida: GPS contribution, J. Surv. Eng., ASCE, 117(2), 77-96.

Soler, T., A.E. Carlson, Jr. & A.G. Evans (1989). Determination of vertical deflections using the Global Positioning System and geodetic leveling, Geophysical Research Letters, 16(7), 695-698.

Earth Rotation

Johnson, T.J., B.L. Luzum & J.R. Ray (2005). Improved near-term Earth rotation predictions using atmospheric angular momentum forecasts, J. Geodynamics, 39(3), 209-221.

Miscellaneous

Soler, T., & D.W. Eisemann (1994). Determination of look angles to geostationary communication satellites, J. Surv. Eng. ASCE, 120(3), 115-127.

Soler, T. (1997). A profile of General Carlos Ibáñez e Ibáñez de Ibero: first president of the International Geodetic Association, J. Geod., 71(3), 176-188.

Soler, T. & M. Ruíz-Morales (2006). Letters from Carlos Ibáñez e Ibáñez de Ibero to Aimé Laussedat: new sources for the history of nineteenth century geodesy, J. Geod., 80, 313-321.

NGS Online Publications - Includes National CORS Site Monumentation (PAT20)