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******* NOTE on Hotel Reservations ********
The Art'otel reserves rooms only until Feb 17, so for any US participants, our the deadline is really Feb 16. Bookings at the Mercure at the workshop rate are possible through Feb 26.

OVERVIEW

This is the third announcement of the first international workshop focusing on the end-to-end systems necessary for supporting an array of upcoming Low Earth Orbiter Missions. This is a joint workshop of the International GPS Service, GeoForschungsZentrum Potsdam and the Jet Propulsion Laboratory.

Discussions over the past two years with the IGS and within the mission agencies have resulted in the consensus to convene this workshop. The objective is to determine the relative interest, roles and responsibilities of each interested and contributing party. It is widely recognized that the IGS can play an essential role in the ground support aspects of LEOs -- such a recommendation has been made by the IGS LEO Working Group.The ground network, a subset of the IGS tracking network, is being planned to provide high rate, low latency data for integration with the flight data for atmospheric occultation objectives. Precise orbit determination as performed by the IGS Analysis Center may actually benefit from an array of LEOs that serve as observing stations in space. This synergistic opportunity can signal the next enhancement of successful international cooperation for multi-purpose GPS applications.

The workshop goal is to bring together interested principals in these endeavors and attempt to derive plausible multi-mission support plans and roles, a starting point for the next decade.

WORKSHOP TECHNICAL PROGRAM

Workshop Sponsors:

International GPS Service (IGS)

GeoForschungsZentrum, Potsdam (GFZ)

Jet Propulsion Laboratory (JPL)

Conveners:

Prof. Dr. Christoph Reigber, GFZ, Germany

Dr. William G. Melbourne, JPL, USA

Prof. Gerhard Beutler, Univ. Bern, Switzerland

Workshop Programme

Program Organizing Committee:

J. Dow (ESA, Germany)

N. Jakowski (DLR, Germany)

R. Neilan (JPL, USA)

Ch. Rocken (UCAR/UNAVCO, USA)

P. Schwintzer (GFZ, Germany)

M. Watkins (JPL, USA)

GENERAL INFORMATION

Conference Location

All sessions will be held in the conference building of the GeoForschungsZentrum Potsdam, Telegrafenberg. For maps see: http://www.gfz -potsdam.de/welcome_en.html
There are rooms available in the conference area for parallel splinter meetings. All persons or groups desiring space for splinter meetings are kindly asked to provide the Local Organizing Committee with full details as soon as possible.

The meeting rooms will be equipped with one 5 x 5 cm slide projector and two overhead projectors. Special requirements (e.g. video presentations) have to be announced at the Local Organizing Committee prior to the meeting.

The Conference Office will be located in the Foyer area of the GFZ conference building. It will be open every day from 9 am to 5 pm.

Participants are advised to register in advance by using the Registration Form (see below).
The pre-registration fee is

160 DM / person before 26 February 1999.

Afterwards, the registration fee is

200 DM / person.

Only cash payment in Deutsche Mark or US Dollars will be possible at the workshop site. No credit cards, checks, purchase orders can be accepted.
The fee includes all attendant costs of the Workshop plus break service each day and an evening reception.

Accommodation

Because of the International Tourism Fair taking place in Berlin at the same time as the workshop, participants are advised to book their accommodation well in advance. The following hotels have blocks of rooms reserved for your visit to Potsdam:

Mercure Hotel
Lange Bruecke, 14467 Potsdam
phone +49 331 2722, fax +49 331 293496
The Mercure is located near Potsdam-Stadt train station at the river Havel and within walking distance from the GFZ. The single room rate is DM 140 (special GFZ rate). The rooms are blocked March 9 to 12 and will be released February 26, 1998. Please refer to "GFZ - LEO Workshop" when making your reservation.

art'otel Potsdam
Zeppelinstr. 136, 14471 Potsdam
phone +49 331 9815-0, fax +49 331 9815555
The art'otel is a new building located in a quiet, historical ensemble at the river Havel; 10 min tram ride plus 10 min walk. The single room rate is DM 150 (special GFZ rate). The rooms are blocked March 8 to 12 and will be released February 15 (!), 1998. Please refer to "GFZ - LEO Workshop" when making your reservation.

Breakfast and Lunch

Generally, a breakfast is included in the hotel charges. Lunch will be available at the GFZ Canteen which is located in the conference building.

Banks and Money Exchange

Hotels provide limited check cashing services. Most banks exchange foreign Travellers checks and currencies. There are electronic cash machines at several bank locations in Potsdam.

Travel

The usual travel to Potsdam for foreigners is by plane to Berlin-Tegel or Berlin-Schoenefeld airports. There are railway, bus and taxi services from the airports to Potsdam. The distance from Berlin-Tegel is approximately 35 km and from Berlin-Schoenefeld 40 km.

Between airport Tegel and the city train station Zoologischer Garten there is a bus shuttle (Bus No. X9) and between airport Tegel and the train station Charlottenburg another bus shuttle (Bus No. 109). City train connections are from Berlin to Potsdam-Stadt (S7). The one-way taxi price is about 60,00 DM.

In March, weather can still be quite cold with temperatures ranging from 0 degrees C during the night and not much higher than 15 degrees C during daytime. Rainfall might be frequent.

Deadline

Deadline for pre-registration: 26 February 1999.

Further Information

More details on the LEO workshop will be available soon on the IGS World Wide Web Site at: http://igscb.jpl.nasa.gov /. Click on the "What's New" link.

For information on GeoForschungsZentrum Potsdam see: http://www.gfz-potsdam.de/.

For additional information, please contact:

IGS Central Bureau
Ruth E. Neilan
Jet Propulsion Laboratory
MS 238-540
4800 Oak Grove Drive
Pasadena, CA
phone: 818-354-8330,
fax: 818-393-6686
email: ruth.neilan@jpl.nasa.gov

or

Local Organizing Committee - LEO Workshop
Katrin Weisse
GeoForschungsZentrum Potsdam
Telegrafenberg A 6
14473 Potsdam, Germany
phone: +49-331-288-1101
fax: +49-331-288-1111
email: weisse@gfz-potsdam.de

We hope that you seriously consider attending and participating in this workshop.

Happy New Year to each of you,

sincerely,
Chris Reigber

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REGISTRATION FORM

---->>>> Deadline for Pre-Registration: 26 February 1999 <<<<<---------

Joint IGS - GFZ - JPL Workshop on
Low Earth Orbiter Missions
held at GeoForschungsZentrum Potsdam
Potsdam, Germany, March 9 - 11, 1999

Copy this portion of the message, complete the information, and send a return email to weisse @ gfz-potsdam.de or you may return by fax to +49-331-288-1111, or by mail to:

Local Organizing Committee 'LEO Workshop'
Attn. Mrs. Katrin Weisse
Division 1 'Kinematics and Dynamics of the Earth'
GeoForschungsZentrum Potsdam
Telegrafenberg A6
D-14473 Potsdam, Germany

General Information (please type/print all information clearly)

0 Dr. 0 Prof. 0 Mrs. 0 Ms. 0 Mr. 0 Other .................... (please X or tick)

Family Name:

........................................................................................................................

First Name:

........................................................................................................................

Department/Institute:

........................................................................................................................

Company/University:

........................................................................................................................

P.O.Box: .....................................

Street:

........................................................................................................................

ZIP Code: .....................................

City:

........................................................................................................................

Country:

........................................................................................................................

Phone: ................................................................ Fax: ..............................................................

Email: ........................................................................................................................

I intend to take part in the Workshop from ...... March 1999 through ...... March 1999.

Workshop Badge (your preference)
Name:

........................................................................................................................

Institute:

........................................................................................................................

Country:

........................................................................................................................

Registration Fees and Payment The pre-registration fee is 160 DM / person before 26 February 1999. Afterwards, the registration fee is 200 DM.

Please indicate method of payment:

0 By bank transfer in German Marks to GeoForschungsZentrum account No. 3093887 at Deutsche Bank Potsdam, bank code 12070000, reference LEO Workshop". Charges on bank orders shall be borne by the sender.
0 By cash at the workshop site (in German Marks or US Dollars only).

Date: ........................

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HOTEL LIST - POTSDAM

Arkona Hotel Voltaire	for GFZ-guests
Friedrich-Ebert-Str. 88	Single Room: DM 175
D-14467 Potsdam	Double Room: DM 214
Phone: +49-331-23170
Fax: +49-331-2317100

Hotel Mercure	for GFZ-guests
Lange Broecke	Single Room: DM 140
D-14467 Potsdam	Double Room: DM 140
Phone: +49-331-2722
Fax: +49-331-293496

art'otel Potsdam	for GFZ-guests
Zeppelinstr. 136	Single Room: DM 140
D-14471 Potsdam	Double Room: DM 180
Phone: +49-331-98150
Fax: +49-331-9815555

Schlosshotel Cecilienhof
Im Neuen Garten	Single Room: DM 195 / 255
D-14469 Potsdam	Double Room: DM 290 / 470
Phone: +49-331-37050
Fax: +49-331-292498

Dorint Kongress Hotel Potsdam
Voltaireweg/Jaegerallee	Single Room: DM 170,- / 310
D-14469 Potsdam	Double Room: DM 170,.- / 450
Phone: +49-331-2740
Fax: +49-331-2741000

Hotel Griebnitzsee
Rudolf-Breitscheid-Strasse 190-192
D-14482 Potsdam-Babelsberg	Single Room: DM 170
Phone: +49-331-70-91-0	Double Room: DM 210
Fax: +49-331-70-91-11

Parkhotel Potsdam
Am Schlosspark Sanssouci	Single Room: DM 170
Forststr. 80	Double Room: DM 190
D-14473 Potsdam
Phone: +49-331-98120
Fax: +49-331-9812100

Seminaris SeeHotel Potsdam
An der Pirschheide	Single Room: DM 160 / 180
D-14471 Potsdam	Double Room: DM 200 / 230
Phone: +49-331-90-90-0
Fax: +49-331-90-90-900

Steigenberger MAXX Hotel
Allee nach Sanssouci 1	Single Room: DM 145
14471 Potsdam	Double Room: DM 170
Phone: +49-331-90910
Fax: +49-331-9091909

Pension Mark Brandenburg
Heinrich-Mann-Allee 71	Single Room: DM 110
D-14478 Potsdam	Double Room: DM 140 / 170
Phone: +49-331-88-82-30
Fax: +49-331-88-82-344

Hotel am Luisenplatz - garni -
Luisenplatz 5	Single Room: DM 109 / 139
D-14471 Potsdam	Double Room: DM 180 / 230
Phone: +49-331-971900
Fax: +49-331-9719019

Schlossgarten Hotel Am Park von Sanssouci -garni-
Geschwister-Scholl-Strasse 41a	Single Room: DM 98 / 125
D-14471 Potsdam	Double Room: DM 135 / 165
Phone: + 49-331-97-17-00
Fax: + 49-331-97-17-04-04

Hotel garni VIVALDI
Karl-Liebknecht-Strasse 24	Single Room: DM 95
D-14482 Potsdam	Double Room: DM 120 / 140
Phone: + 49-331-74-90-60
Fax: + 49-331-74-90-616

Pension Oppermann
Heideweg 43	Single Room: DM 42 / 71
D-14482 Potsdam	Double Room: DM 77 / 115
Phone: + 49-331-748-03-75
Fax: + 49-331-71-92-45

Hotel Ravenshorst
Arthur-Scheunert-Allee 2	Single Room: DM 85
D-14558 Bergholz-Rehbruecke	Double Room: DM 120
Phone: +49-33200-870
Fax: +49-33200-87200

Pension Auf dem Kiewitt
Auf dem Kiewitt 8	Single Room: DM 80
D-14471 Potsdam	Double Room: DM 120
Phone: + 49-331-90-36-78
Fax: + 49-331-90-36-78

All hotel/pension prices include breakfast. In case you encounter difficulties with getting the special rates for GFZ guests, please turn to the LOC.

Private accommodation

Potsdam-Information
Friedrich-Ebert-Strasse 5
D-14467 Potsdam
Phone: +49-331-275580
Fax: +49-331-293012

Private accommodation is available in the following categories:

Rooms in flats, use of bath and WC shared with lessor. ca. DM 20-25 per person

Rooms in single family houses with guest WC. Bath and/or shower available on the premises. ca. DM 25-35 per person

Holiday flats, comprising sitting room, bedroom, kitchenette with tea making facilities, bath and/or shower and WC. ca. DM 25-50 per person

Holiday homes for 2-4 persons with additional folding bed; guest shower and/or bath and WC. ca. DM 35-50 per person

The prices for single rooms are DM 25-50. Breakfast can be supplied in most cases by arrangement, but is not included in the price.

Please, tell your needs to Potsdam-Information (date of stay, number of persons and category). As soon as Potsdam-Information has received your confirmation it will send you the address of the private house booked.