报告人：Peter J.G. Teunissen（代尔夫特理工大学 教授）

时间：2024年10月21日（周一）9:30-10:30

地点：测绘馆206报告厅

报告简介：

Global Navigation Satellite Systems (GNSSs) have revolutionised Positioning, Navigation, Timing and Atmospheric Sensing. Despite these tremendous achievements, important challenges remain, with new opportunities arising. In this presentation, after a brief review is given of the current state of positioning technology, the importance of GNSS integrity, in particular for liability-critical and safety-critical applications is emphasized. In order to tackle GNSS integrity proper, important theoretical work still needs to be done. These challenges will be highlighted by providing some new results on (a) the theory of mixed-integer inference, and (b) the theory of model validation. On the theory of mixed-integer inference, we introduce the concept of primal and dual mixed integer least-squares estimation and present the statistical and numerical analysis of its various forms. On the theory of model validation we introduce the concept of penalized testing, thereby showing how user-defined penalty functions contribute to the workings of different DIA-estimators. The above topics represent samples of fertile grounds for the typical researcher (PhD student and Postdoc alike) interested in the theory of geodetic data processing and modelling, and eager to take up a difficult challenge and/or looking for research opportunities that can make a difference.

报告人简介：

Peter Teunissen is Professor of Geodesy at Delft University of Technology, an elected member of the Royal Netherlands Academy of Arts and Sciences, and founding Editor-in-Chief of IAG’s Journal of Geodesy. He has been research-active in various fields of Geodesy, with contributions ranging from new geodetic theory (mixed-integer model estimation, quality control and DIA reliability theory) to breakthrough innovations in satellite navigation and geospatial infrastructure disciplines (LAMBDA method, multi-GNSS PPP-RTK and the early characterization of the Chinese BeiDou, the Indian IRNSS, and the Russian GLONASS CDMA system). His scientific contributions have been recognized through various awards, including the IAG Bomford Prize, the ION Kepler Award, EGU’s Vening-Meinesz Medal and he is an elected Fellow of IUGG, IAG, UK-RIN, and USA-ION. He has authored numerous journal papers and textbooks, and he is on the Editorial Board of several peer-reviewed journals. With Springer, he published the Handbook of GNSS (Teunissen/Montenbrück) and GPS for Geodesy (2nd  Ed. Teunissen/Kleusberg), and he published the books Adjustment Theory (2nd Ed.), Testing Theory (3rd Ed.), Dynamic Data Processing (2nd Ed.) and Network Quality Control (2nd Ed.) with TU Delft Open Publishing.