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@esa -=ll::=~llill[*:= *::H <strong>IGS</strong> ANALYSIS CENTRE WORKSHOP 199S Wednesday 11 February 09:00 09:10 09:20 09:35 09:50 10:05 10:20 10:30 10:50 13:00 14:30 Contributed papers on other topics (Session chair: Peng Fang) Y. Bar-Sever: Low elevation tracking by TurboRogue receivers Y. Bar-Sever, K. Hurst: Site specific antenna phase center calibrations H. Habrich: Experiences of the Federal Office for Cartography and Geodesy (BKG) in processing GLONASS and combined GLONASS/GPS observations M. Romay-Merino: Precise autonomous orbit determination for future navigation satellites without degradation during manoeuvres T. Martin-Mur, C. Garcia-Martinez: ARP project - absolute and relative orbits using GPS R. Neilan: Status of GPS modernisation effort in the US, including prospects for additional civilian frequencies Free slot Coffee break Discussion on open AC issues (Facilitators by topic groups: J. Dow, J. Kouba, T. Springer) End of workshop Wrap-up Business Meeting ( GB/CB members, session coordinators)
,.,,. ,:, -.. ., ,,.Y @esa 9=II::=RIII;IJ*: =M::m @iisEJ ,-.:. .+ I&s : ,., , . 3 . . ....+ ‘“ Posters 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. <strong>IGS</strong> ANALYSIS CENTRE WORKSHOP 1998 CODE Analysis poster EMR Analysis poster ESA Analysis poster GFZ Analysis poster JPL Analysis poster NGS Analysis poster S10 Analysis poster USNO Analysis Poster Newcastle GNACC processing/ results GFZ CHAMP poster and S/C model SIRGAS (South America) RNAAC poster 6
Page 1 and 2: T 8 A N A L Y S I S CENTER WORKSHOP
Page 3 and 4: FOREWORD The 1998 Analysis Centre W
Page 5 and 6: TABLE OF CONTENTS Foreword . . . .
Page 7 and 8: S. Schaer, W. Gurtner, J Feltens Th
Page 9 and 10: Programme of Workshop 1
Page 11: @esa m=l, ::=mlllll lx= mj:n IGS AN
Page 15 and 16: EXECUTIVE SUMMARYl G. Beutler The 1
Page 17 and 18: activities one has the problem that
Page 19 and 20: future tasks are clearly defined. M
Page 21 and 22: ut due to the usually excellent inf
Page 23 and 24: Ionosphere The position paper “IG
Page 25 and 26: SUMMARY RECOMMENDATIONS OF THE DARM
Page 27 and 28: 6. That a (super) combination of G-
Page 29 and 30: Annex IGS Fiducials for ITRF Refere
Page 31 and 32: ● coordinates and velocities of t
Page 33 and 34: archiving, site and RINEX standards
Page 35 and 36: it is unlikely that a single person
Page 37 and 38: GOVERNING BOARD The Governing Board
Page 39 and 40: Topic 1: The IGS Analysis Products
Page 41 and 42: used, the consistency between all t
Page 43 and 44: Consistency between the IGS orbits
Page 45 and 46: Table 1. Median daily repeatabiliti
Page 47 and 48: Of course the inclusion of bad sate
Page 49 and 50: consistent with the IGS reference f
Page 51 and 52: GNAAC, of providing station coordin
Page 53 and 54: One large future “customer” of
Page 55 and 56: seconds. A format for station and s
Page 57 and 58: Zumberge, J. F., M. B. Heflin, D. C
Page 59 and 60: INTRODUCTION PRECISE HIGH-RATE SATE
Page 61 and 62: FIXED STATION CLOCKS APPROACH A sec
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250 -150- - -250- 3.00 3.33 3.66 4.
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HIGH-RATE STATION CLOCKS One advant
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INTRODUCTION THE IGS/BIPM TIME TRAN
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A type of point positioning likely
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differences. This is probably suffi
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Topic 2: Orbit Prediction and Rapid
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The factors that limit the accuracy
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Table 1. Number of stations availab
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Table 3. Effect of different pertur
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Table 4. Orbit fit (7-day) and orbi
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A more than twofold improvement in
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60 40 Ii . . . ..- ● E WC.W 2 heu
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10 5 t t + IV (cm) ☞ ☞ IGS rapi
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Broc~dcast orbits for non—eclipsi
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Table 1. Effect of different Pertur
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where aD~, aDC, aDS, aye, aye, ays,
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: : m . > > : ~ ~ g z 2 CPS WEK (a)
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Table 2. Selected “optimal” orb
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lines in both plots showing the Do
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The RPR model is based on the time
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likely caused by the eclipsing sate
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Appendix This Appendix gives some s
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NEW SOLAR RADIATION PRESSURE MODELS
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120 100 20 \ lm 10m J-IA c Ic predi
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Using the current GNSS systems, use
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meter, this will be sufficient to p
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Standards and meteorological loggin
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decades, This package has been exte
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mainly due to the bad geometrical c
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corrections can be compensated by c
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These results can be compared with
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BACKGROUND POTENTIAL USE OF ORBIT P
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were used to validate the basic des
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METOP a.m. GRAS data as parl 0( the
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parameters of both the ‘model wor
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A critical aspect is given by the d
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Topic 3: IGS Reference Frame Realis
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“A global IGS reference system”
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determinations (largely free of the
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Fig. 2. of IGS he Proposed set of 5
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software. As seen from Table 2 and
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of about 0.2 mas are expected, it i
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. All the A-SINEX files (with stati
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choose (unconstrained, minimum) to
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and semiannual effects for some sta
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Zumberge, J. F, M.B. Heflin, D.C. J
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Africa/Arabia : BAHR r,e,n,s Z12 0.
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However there will be something lik
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TROM TSKB VILL WES2 WTZR YAR1 YELL
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Sigma CAS1 DAV1 MCM4 OHIG KERG Mean
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Example #1: Minimum datum (rotation
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APPENDIX VI SUGGESTIONS AND DISCUSS
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Table 1: 7 parameter orbit and stat
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ITRF96 AND FOLLOW ON FOR 1998 Claud
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Table 1. Global ITRF96 residuals pe
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INTRODUCTION IGS REFERENCE STATIONS
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Class D: Velocity residuals larger
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(MCM466001MO03). These stations sho
Page 179 and 180:
ABSTRACT ESTIMATION OF NUTATION TER
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that the VLEII formal errors will o
Page 183 and 184:
with oj denoting a combination of t
Page 185 and 186:
Figure 5. 0.20 0.15 0.10 0.05 0.00
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GLOBALLY CONSISTENT RIGID PLATE MOT
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I The velocity of a point that is f
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mass (which we assume to be Euler
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otated into ITRF using a 14-paramet
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can arise because the station actua
Page 197 and 198:
. In northern Algeria, convergence
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Topic 4: IGS Products for Troposphe
Page 201 and 202:
that all coordinates refer to the s
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GFZ are extracted for 90 days at th
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15. ~2. CODE 9. 6. 3, 00 15. 12, 9.
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10 4 8. 2. I 890. 893. 8%. 899. 902
Page 209 and 210:
18. 12. n 6. 2 ~ ‘“ N -6. -12.
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L 10. I 5. r o. L-- 97250. 40. 35.
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1. Verification of DWD Weather Fore
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5. DAILY BKG SOLUTION, GREF PART, D
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ESTIMATING HORIZONTAL GRADIENTS OF
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ABSTRACT IGS PRODUCTS FOR THE IONOS
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POTENTIAL PARTICIPANTS IN A ROUTINE
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TOWARDS A COMBINED IGS IONOSPHERE P
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GOALS AND NEXT STEPS For the near f
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IONEX: The ionosphere Map EXchange
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From method (1) to method (3), one
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Reading and Writing IONEX Modules F
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I I I I I I I I I contained in curr
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Table 2: Ionosphere map file — da
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1000 1000 1000 1000 1000 1000 1000
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1000 1000 1000 1000 1000 1000 1000
Page 241 and 242:
Table 2: Differential code biases
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This equation can be rewritten in f
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In practice, the combined biases (r
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w o z w & LLl IL LL E DENT -BRUS (D
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10.00 ‘ - — 5.00 ‘- -- 0.00
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In a similar way as Wanninger (1994
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anging fi-om a few minutes to sever
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CONCLUSIONS The paper has outlined
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ABSTRACT MONITORING THE IONOSPHERE
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check and/or improve well-known ion
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1990). Collecting more and more TEC
Page 263 and 264:
References Davies K., W. Degenhardt
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The main part of the paper will the
Page 267 and 268:
One indicator of accuracy is the da
Page 269 and 270:
Figure 3: Global TEC map from GE fi
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90 45 0 -45 -90 -100 -90 0 90 10< F
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When comparing the TEC maps in Figu
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Chapman Profile approach, thus prov
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points, but represent the integral
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Cosz cosine of slant range zenith d
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if not linear - the unknown paramet
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geometrical conditions can arise, a
Page 285 and 286:
Establishment of Linearized Observa
Page 287 and 288:
spending tracking data, the SST opt
Page 289 and 290:
THE ROLE OF GPS DATA IN IONOSPHERIC
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(e.g., using the 40 and 360 MHz sig
Page 293 and 294:
Retrospective nowcasting Retrospect
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(chairman: R. Leitinger, Austria, c
Page 297 and 298:
● ● ● ● 24-hour global iono
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G .- 0 y 180 -150 -120 -90 -60 -30
Page 301 and 302:
E 9 .2 ?: j ~ ?4 ?30 ~“ ~z % :’
Page 303 and 304:
c c E c .- E! !2 %0 . m t 1 1 0 200
Page 305 and 306:
,$ ., L r 1 (a) TEc maps Figure8. 2
Page 307 and 308:
Rothacher, M., G. Beutler, E. Brock
Page 309 and 310:
Experiences of the BKG in Processin
Page 311 and 312:
RINEX N-l?ite for GPS modified Kepl
Page 313 and 314:
The combined SP3-fde includes also
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1) Set up n single difference ambig
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0.10 a) z g 0.06 0.02 Figure 5: Fra
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[ 1) Compute triple difference resi
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PRECISE AUTONOMOUS EPHEMERIS DETERM
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ephemeris message will be computed
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The solution to the problem can be
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integration period, e.g. 5 minutes
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LATITUDE (DEG) 9L . . 6& - ;+5 ,- o
Page 331 and 332:
First from the generation of the si
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it is believed that, with dedicated
Page 335 and 336:
needed in order to use them as yard
Page 337 and 338:
close to the maximum. It was decide
Page 339 and 340:
Summary IGS Related Activities at t
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Table 1. Point positioning using NR
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ESA/ESOC IGS ANALYSIS CENTRE POSTER
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ESTIMATION OF MANOEUVRES Manoeuvres
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TROPOSPHERIC ESTIMATES Tropospheric
Page 349 and 350:
Sever (JPL) and Gerd Gendt (GFZ). S
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A REVIEW OF GPS RELATED ACTIVITIES
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2.5 2.0 1.5 ~ 1.0 % E 0.5 x 0.0 -0.
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TEC from the CORS Network Figure 4
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REFERENCES Cartwright, D.E., and R.
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In recent years, the Bulletin A pol
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frequency reference. A second recei
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THE IGS REGIONAL NETWORK ASSOCIATE
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IJJcl UKJ 4“’’’’’’’
Page 367 and 368:
W.-,-,- ,,, IJJ3 d , , , ,. . . . !
Page 369 and 370:
Variations of weekly SIR R solution
Page 371 and 372:
Page 373 and 374:
Page 375 and 376:
w’ —— L .sT41w.!l. c8Q#_. .J
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T HE N EWCASTLE G LOBAL N ETWORK A
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6 5 4 23 2 1 0 S TRATEGY Figure 2:
Page 381:
IGS Workshop Dinner, Jagschloss Kra
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