Report from WPLTN Steering Committee Meeting

London, UK
September 23, 1997

Hiroo Kunimori, CRL

Executive Meeting held 22 September with Hiroo Kunimori, CRL, Yang Fumin (Chinese Network), and Vladimir Glotov (Russian MCC), Fax report from John Luck, AUSLIG received at the venue, including Australian Situation. Attendance of NASDA.

National Report and Action Highlights

Campaign

GIS (Geographic Information System) Infrastructure for Asia and the Pacific, a campaign of simultaneous observations at GPS, SLR, VLBI, DORIS, and PRARE permanent geodetic observation sites Asia pacific region, during October 1997.

AUSLIG, Australia is taking a principal roll to execute this project. Endorsed by the 14th United Nations Regional Cartographic Conference or Asia and the Pacific, February 1997.

Nothing special action will be required but to observe the major satellites with as much quantities (passes) as possible and send WLNP to CDDIS as usual. Update of a local tie information between different which have not been yet registered in ITRF94.

Japan (H. Kunimori)

Keystone SLR in final phases of engineering test will start formal observation in October 1997 on a single baseline between Kashima and Koganei.
HTLRS: Remote island campaign by JHD is going on from July to November 1997.
ADEOS stopped spacecraft function in early July and had to declareto cease worldwide SLR observation.

China (Yang Fumin)

Network status (Yang Fumin) Number of passes, Filter performance, Mobile station development
Changchun SLR upgrade was performed in August by WPLTN mission, deploying Portable Calibration Standard, CSPAD and multiple ground targets with re-surveying. With precision better by factor three and accuracy we assessed at this moment better than 1 cm, will continue parallel observation to reveal the characteristics and source of bias.
Kunming Upgrade Efforts by US initiatives.

Australia (H. Kunimori on behalf of John Luck)

DAS, the Department of Administrative Services, of which AUSLIG is one division, made the decision last year to market Test its SLR and ancillary functions (GPS, DORIS, Time Service) for OUTSORCING to private sector, as a result, after RFP process, AUSLIG is negotiating a contact with a company to supply SLR system and operate it at Mount Stromlo Observatory. Consequently, Orroral will be closed sometime next year.

Russia (H. Kunimori, Vladimir Glotov)

A quick-look bias analysis on Lageos1 and 2 Report from MCC has been test-serviced since January 1997 on a weekly basis for SPLTN stations. Comparison with other analysis center and improvement is going on.
WESTPAC scheduled to launch officially in this year. Some delay could be anticipated due both to technical and administrative reason. MCC set up the acquisition, tracking and data service infrastructure or WESTPAC, and tested through by CEIZ mission. MCC and WPLTN secretary will prepare the Laser Tracking Support Plan and submit to ILRS CB/Mission WG, earliest possible.

Discussion continues regional contribution to ILRS by Nominating*:

MCC as Associate Analysis Center
CRL/NASDA as a Japanese network data center
SHO as a Chinese network data center
AUSLIG as an Australian network data center
RISDE as a Russian/CIS network data center and
CRL a hub of Operational center in WPLTN
No candidate nomination for Regional Data Centers

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