Technical description of solution shad0001 1. Purpose of the solution: ITRF2005 daily sinex solution 2. Analysis center: SHA ( Shanghai Astronomical Observatory ) 3. Short narrative description of solution: Solution shad0001 estimates position of all stations, coordinates of some sources, UT1, polar motion and their rates, daily nutation offsets for each session, all parameters are treated independently. No-net-rotation, no-net-translation constraints are imposed on the estimates of the station positions locally. Clock function for all stations except the reference one and atmosphere zenith path delay are modeled by a linear spline with the time span 60 and 20 minutes respectively. Parameters of these spline are estiamted as well together with other parameters. Data used spans from Aug. 1979 to Nov. 2006. The observation durations shorter than 20 hours are not used. And all VCS sessions are excluded. Parameters are split into two groups: 1) local parameters estimated for each 24-hour session individually; 2) segmented parameters estimated over 20-60 minutes time spans. 4. Estimated parameters: a. celestial frame: right ascension, declination of 400 sources for each session independently (Appendix A). 112 sources are excluded (Appendix B). (local) b. terrestrial frame: X, Y, Z of all sites for each session independently. (local) c. Earth orientation: x, y, UT1-TAI, xdot, ydot, UT1dot, dpsi, deps. (local) d. zenith troposphere: linear spline 20-min interval; rate constraint with reciprocal weights generally 50 ps/hr; NMF wet partial derivative. (segmented). e. troposphere gradient: east and north gradients as well of the rate of their change was estimated for all stations offset and rate constraints with reciprocal weights 0.5 mm and 0.5 mm/day were applied. (local). f. station clocks: quadratic (local) + linear spline with 1-hr interval (segmented); rate constraint with reciprocal weights generally 5.0E-14 g. baseline clocks: set in initial analysis - usually used. (local) 5. Celestial reference frame: a. a priori source positions: icrf_Ext1p. It's from our solution before. b. source positions adjusted in solution: yes, some of them. If yes, c. definition of orientation: 632 sources are fixed to icrf-Ext1p, the formal errors of these sources are < 0.5 mas both in right ascenson and declination in a global source solution using the same sessions. d. source position estimation: 400 local 6. Terrestrial reference frame: a. a priori station positions: sititrf2kp b. a priori station velocities: velitrf2kp c. reference epoch: 1997.0 d. station positions/velocities adjusted in solution: yes, positions only e. definition of origin, orientation, and their time evolution: no-net-translation and no-net-rotation of position with respect to sititrf2kp. All stations participate in equations of constraints. Equations of constraints are equally weighted. f. station parameter estimation: X, Y, Z, locally for all stations g. stations with constraints: no h. stations with discontinuous positions and date of discontinuity: no i. stations with nonlinear velocities: no j. relativity scale: the terrestrial reference frame is defined using the following metric tensor: G_oo = -(1 - (2W/c^2 + W^2/c^4) + 2L_g ) G_oa = -4W^a/c^3 G_ab = \delta_ab (1 + 2W/c^2 - 2L_g) ) k. permanent tide correction: yes 7. Earth orientation: a. a priori precession model: IAU2000A b. a priori nutation model: IAU2000A c. a priori short-period tidal variations in x, y, UT1 were taken into account in accordance with the model hf1102a d. EOP estimation: X, Y, UT1, Xdot, Ydot, UT1dot, deps, dpsi each day with a priori error of 45 mas for pole and 3 ms for UT1, 45 mas/day and 3 ms/day for pole rate and UT1 rate to allow estimation for one-baseline sessions; deps and dpsi are relative to IAU2000A precession/nutation models. Time tag of EOP series is the middle epoch of the session. 8. A priori geophysical models: a. troposphere: NMF dry mapping function; Saastamoinen zenith delay calculated using logged pressure, temperature; a priori mean gradients from DAO weather model. b. solid Earth tide: IERS Conventions 1996, p.56-65, step 1 and step 2, anelasticity variant, including tides of the 3-rd order. c. ocean loading: 3D ocean loading displacements computed by SPOTL software. d. atmosphere loading: 3D displacements computed by convolving global surface filed on 2.5x2.5 degrees grid with 6 hour temporal resolution using the NCEP reanalysis model. 9. Data type: group delays 10. Data editing: 5 deg elevation cutoff 11. Software: Calc 10.00, SOLVE revision date 2006.07.19 ---------------------------------------------------------------------------- Appendix A. ~~~~~~~~~~~ List of 400 sources with right ascension and declination estimated: 0002+813 0007+757 0008-421 0012+776 0015+781 0022-423 0026+845 0032+612 \ 0032+801 0036+767 0037-593 0042+754 0048-427 0052+781 0100+873 0107-610 \ 0110-668 0116-219 0116+319 0118+806 0125+628 0127+084 0133+758 0147-076 \ 0152+756 0153-410 0157+808 0159-062 0201+088 0201+796 0206-048 0210-075 \ 0210+861 0212-039 0213-013 0214-522 0215+806 0220-023 0223+814 0230-790 \ 0234-301 0235-618 0241+622 0247+789 0253+789 0258+772 0301+756 0307+380 \ 0312-770 0328+861 0331+022 0334+014 0349+764 0352+825 0355-483 0355-669 \ 0358+040 0400+764 0406+856 0407-658 0407+760 0409+806 0420-625 0422+770 \ 0431-512 0434+759 0443+801 0445+830 0446+595 0450-743 0454-463 0454-810 \ 0502+859 0503-608 0505+874 0517-726 0522-611 0524-485 0529+075 0533+812 \ 0534-340 0534-611 0537-692 0542-735 0548+800 0549+192 0549-575 0558-504 \ 0600+219 0610+171 0612+755 0623+765 0623+803 0624+842 0628-627 0635+803 \ 0636+823 0645+858 0704+819 0710+858 0714+779 0730+504 0734+805 0736-332 \ 0740+828 0741+214 0743-673 0744-691 0800+760 0800+789 0806-710 0809-493 \ 0812+757 0819+770 0823-223 0823-500 0824+840 0835-339 0836+290 0845+788 \ 0858+839 0903-573 0910+805 0913+786 0916+814 0931+834 0936-853 0946+808 \ 0952+581 0958+793 0959-443 0959+881 1003+813 1003+861 1004-500 1005-739 \ 1012-448 1016-311 1018+808 1022-665 1026-084 1026+790 1034-374 1038+52B \ 1043+066 1045-620 1046+835 1055-301 1056+212 1058+726 1100+772 1105-680 \ 1109-567 1110+771 1115+810 1117+146 1129-580 1133-739 1135+836 1143-287 \ 1143-696 1146+770 1148-671 1152+758 1154+815 1156-663 1201+843 1205+782 \ 1218+797 1224+864 1228-113 1232+777 1234-504 1236-684 1239+606 1242+864 \ 1243+764 1245-454 1251-407 1257+839 1305+805 1305+825 1310+784 1320-446 \ 1322+835 1323+321 1323+799 1324+758 1325-558 1337+808 1343-601 1344+793 \ 1352-632 1355-416 1401+835 1412-368 1415+793 1417-782 1418+784 1420-679 \ 1421-490 1422+763 1436+763 1437+331 1441+522 1445+752 1448-648 1454-354 \ 1455+247 1500+755 1505-496 1506+805 1508-656 1509+022 1511-476 1516+819 \ 1519-294 1532+772 1532+824 1535+004 1554-643 1555-140 1555+754 1556-245 \ 1600+43A 1600+43B 1600-445 1600-489 1606-398 1611-710 1612+797 1616+851 \ 1624-617 1624+879 1626+755 1628+216 1631+859 1633-810 1637-771 1640-231 \ 1646-506 1650+758 1654+866 1657-562 1657+780 1659-621 1708+433 1708+77A \ 1711+833 1716+762 1718-649 1725-795 1727+771 1729-373 1733-565 1733+788 \ 1741+759 1748-253 1756-663 1800+751 1805-214 1806-458 1809+823 1814-637 \ 1815+531 1822-173 1824-582 1825-055 1825+799 1827-272 1828+821 1829-207 \ 1829-718 1832+779 1836+807 1843+400 1843+767 1847+768 1852-534 1900+771 \ 1901+016 1903-802 1906+764 1906+860 1910+052 1911+80A 1919+086 1924+792 \ 1928-698 1929-457 1932+106 1934-638 1935-692 1936-623 1939+813 1941+775 \ 1946+781 1946+788 1950-613 1951+767 1952+138 2002-375 2005-044 2005+403 \ 2005+820 2015+766 2029+022 2029+837 2030-689 2042+750 2043+74A 2046+429 \ 2051+745 2051+752 2058-297 2058-425 2059-786 2101-715 2102-659 2104+763 \ 2109-811 2113+827 2115-305 2117-614 2117-642 2118+749 2120+099 2123-463 \ 2128+048 2133+792 2134-470 2134+846 2136+764 2138-377 2139+748 2142-758 \ 2145+082 2146-783 2147+077 2149+754 2152-699 2158+771 2205-636 2211-388 \ 2215-508 2217+787 2220-351 2226-411 2229-172 2231+803 2236-572 2238+815 \ 2239-631 2244-372 2249+760 2249+856 2254-367 2300-307 2300-683 2301+817 \ 2306-312 2310-417 2311-452 2311-477 2314-340 2321-375 2321+751 2322-411 \ 2324-023 2325+822 2328+774 2333-415 2333-528 2342+821 2344-514 2347+789 \ 2351-309 2353-686 2353+796 3C48 4C+32.26 4C55.17 CEN-A CYGNUS-A \ LSI61303 M104 NGC2484 NGC4261 NGC4278 NGC5077 NGC5141 NGC6034 \ NGC6500 NGC7720 SGR-A SN1993J UG01841 UG03927 UGC02748 VELA-G Appendix B. ~~~~~~~~~~~ List of 112 sources are not included in solution: 0218+357 0218+35A 0218+35B 1031+567 1830-21A 1830-21B 1947+079 0036-216 \ 0043+246 0122-514 0201-440 0202-765 0207-078 0248+560 0252-712 0254-334 \ 0335-122 0336-017 0340+044 0354+559 0428+205 0512+249 0515-674 0532+506 \ 0614-349 0615-365 0622-441 0647-475 0700-465 0710+196 0727-365 0731-465 \ 0802-276 0842-754 0844+387 0902+343 0925+504 0941-080 1015-314 1017+109 \ 1020-103 1039-474 1049-650 1206-399 1215-457 1221-829 1222+216 1225-023 \ 1239-044 1245-197 1303-827 1305-241 1328+254 1329-665 1334-649 1422+268 \ 1439+327 1505+428 1511+238 1540-828 1603+573 1622+238 1713+218 1721+589 \ 1740-517 1742-283 1809+170 1813-241 1827-360 1829-106 1830-211 1848+333 \ 1855+031 1920+154 1934+207 1954+282 2022+542 2027+383 2044-168 2100+468 \ 2141+175 2155+312 2209+184 2259-375 2353+816 3C343 3C343.1 4C+00.02 \ HD132742 HD32918 HR1099 M106 M77 M82 MRK003 NAQL93 \ NGC0253 NGC1167 NGC2110 NGC2146 NGC3079 NGC3690 NGC4151 NGC6166 \ NGC6240 NGC6946 OB338 SIGCRB UG00192 UGC01651 UXARI VELA