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Presentations, posters, and papers from the workshop are available in PDF format sorted by session. The full agenda document is available.

• Session 1: Satellite tracking and scheduling
• Session 2: Performance evaluation
• Session 3: Accuracy and scheduling
• Session 4: Automation and autonomous station operation
• Session 5: Wrap-Up
• SLR station visit
• Posters

The following icons are used for the on-line proceedings documentation:

All files for the proceedings are stored in Adobe PDF format. The proceedings from this workshop will not be published in hardcopy form. Abstract/paper numbers were assigned and are included in the listing of papers below. To cite a paper from the workshop, please use the following format:

<<Author name(s)>>, <<Paper Title>>, presented at the 2017 ILRS Technical Workshop, Riga, Latvia, October 02-05, 2017.

Authors are asked to read the instructions for submitting papers for the web proceedings.

Sunday, October 01, 2017
					15:00 -	18:00		Registration
					09:00 -	16:00		Analysis Standing Committee meeting
					16:00 -	18:00		ILRS Governing Board meeting
Monday, October 02, 2017
Session 0: Workshop Welcome
					09:00 -	09:30		Riga station history (K. Salmins)
Session 1: Satellite tracking and scheduling
Chairs: Mike Pearlman, Carey Noll, Jens Steinborn, Frank Lemoine
Session 1A - Overview
					09:30 -	09:40		Introduction (M. Pearlman)
					09:40 -	10:00		What is the role of GGOS and the ILRS role in GGOS (M. Rothacher/M. Pearlman)
					10:00 -	10:15		Results of the ILRS User Survey (M. Pearlman)
					10:15 -	10:30		Break
Session 1B - Requirements by Discipline
					10:30 -	10:45		Requirements for the ITRF (E. Pavlis)
					10:45 -	11:00		Requirements for Altimeter Missions (F. Lemoine)
					11:00 -	11:15		Requirements for GNSS (Galileo, GLONASS, Beidou, etc.) (G. Bury)
					11:15 -	11:30		Requirements for GLONASS (M. Sadovnikov/V. Shargorodskiy)
					11:30 -	11:45		Requirements for CubeSat (M. Rothacher)
					11:45 -	12:00		Requirements for Supporting Other Applications (time varying gravity field, atmospheric drag) (T. Otsubo/M. Blossfeld)
					12:00 -	13:00		Lunch
Session 1C - Current ILRS Network Performance
					13:00 -	13:15		Review of ILRS Network Performance (M. Pearlman)
					13:15 -	13:30		Rating Station Performance (E. Hoffman)
					13:30 -	13:45		Setting ILRS Tracking Priorities (M. Pearlman)
					13:45 -	14:15		Discussion
					14:15 -	14:45		Break
Session 1D - ILRS Network Procedures
					14:45 -	15:00		Issues with Satellite Predictions (J. Steinborn/G. Appleby)
					15:00 -	15:15		Impact of Supporting Other Applications (G. Kirchner/G. Appleby)
					15:15 -	15:25		Long Term View (M. Pearlman)
					15:25 -	15:45		Poster Briefs (2 min each)
					16:00 -	18:00		Data Formats and Procedures Standing Committee meeting
					18:00			Ice Breaker
Tuesday, October 3, 2017
					08:00 -	09:00		Transponder Standing Committee meeting
Session 2: Performance evaluation
Chairs: Erricos Pavlis, Toshi Otsubo, Horst Mueller, Cinzia Luceri
Session 2A - Overview & Ongoing ASC Efforts
					09:00 -	09:15		Introduction (E. Pavlis)
					09:15 -	09:35		The ILRS ASC Pilot Project on systematic error estimation (C. Luceri)
					09:35 -	09:50		BKG’s Contribution to the ILRS Pilot Project on Systematic Errors (D. Koenig)
					09:50 -	10:20		Break
Session 2B - State of the Network and Sources of Errors
					10:20 -	10:35		Evaluation of the present SLR tracking stations (H. Mueller)
					10:35 -	10:55		SLR error sources in the kHz repetition era: How should we improve the range measurement and the products? (T. Otsubo)
					10:55 -	11:15		Variability of LAGEOS normal point sampling: causes and mitigation (J. Rodríguez)
					11:15 -	11:35		Effect of pulse length, rise time, signal strength, and type of detection system on the range correction for LAGEOS-2 (D. Arnold)
					11:35 -	12:00		Discussion
					12:00 -	13:00		Lunch
Session 2C - Hardware & External Tools to Improve Performance
					13:00 -	13:20		From Time Transfer by Laser Ranging to space geodetic products (A. Belli)
					13:20 -	13:40		Methods to increase ranging performance and accuracy implemented in the Russian new generation laser station ‹‹Tochka›› (S. Martynov)
					13:40 -	14:00		Discussion
					14:00 -	14:30		Break
Session 2D - ILRS Tools for Network Support
					14:30 -	14:50		JCET Tools for the Assessment of the ILRS Stations’ Performance (E. Pavlis)
					14:50 -	15:10		GOVUS – a new on-line tool for the evaluation of SLR observations to GPS, GLONASS, Galileo, BeiDou and QZSS (R. Zajdel)
					15:10 -	15:30		The ILRS Rapid Service Mail a tool to inform stations quickly about potential problem (T. Otsubo)
					15:30 -	16:00		Discussion/Closing Remarks
					16:00 -	17:00		Networks & Engineering Standing Committee meeting
					17:00 -	18:00		Missions Standing Committee meeting
Wednesday, October 04, 2017
					08:00 -	09:00		Space Debris Study Group meeting
Session 3: Accuracy and scheduling
Chairs: Evan Hoffman, Kalvis Salmins, John Degnan, Ludwig Grunwaldt
Session 3A - What are the factors that are currently limiting performance (data quantity and quality)?
					09:00 -	09:05		Introduction (E. Hoffman)
					09:05 -	09:20		Survey Results and Discussion (E. Hoffman)
					09:20 -	09:40		Discussion - Tools for tracking performance and reporting problems
					09:40 -	10:00		Transitioning the NASA SLR network from the Time Interval Mode to Event Timing Mode with improved Data quality and quantity (T. Varghese)
					10:00 -	10:30		Break
					10:30 -	10:45		Challenges to Achieving Millimeter Accuracy Normal Points in Conventional Multiphoton and kHz Single Photon SLR Systems (J. Degnan)
					10:45 -	11:00		Single versus multi-photon SLR using SPAD detectors (I. Prochazka)
Session 3B - Normal Point Generation
					11:00 -	11:30		Discussion - Do we need a better or a more satellite and station specific definition of the NP?
					11:30 -	11:55		Discussion - Occurrences of simultaneous LAGEOS/Cannonball Tracking, what do we get out of this? Should this be further studied?
					11:55 -	12:00		Correlation of histograms for LAGEOS with actual returns (D. Arnold)
					12:00 -	13:00		Lunch
Session 3C - Hardware & External Tools to Improve Performance
					13:00 -	13:15		Delay compensated Optical Time and Frequency Distribution for Space Geodesy (U. Schreiber)
					13:15 -	13:30		Time Bias Analysis and Prediction: a Prototype Service (S. Bauer)
					13:30 -	13:45		Sky Clarity Comparison between Riga and Metsahovi SLR Stations (J. del Pino)
					13:45 -	14:00		Discussion - Should the ILRS provide individual tracking schedules for clustered stations to optimize satellite coverage?
					14:00 -	14:30		Break
Session 3D - Poster Session
					14:30 -	16:00		Poster session
					18:00 -	21:00		Workshop dinner
Thursday, October 05, 2017
Session 4: Automation and autonomous station operation
Chairs: Jan McGarry, Georg Kirchner, Chris Moore, Pierre Lauber
Session 4A - Introduction and Current State of the ILRS
								Introduction (J. McGarry)
					09:00 -	19:15		Automatic scheduling of satellite passages at the SOS-W (S. Riepl)
					09:15 -	09:30		OOOS: A hardware-independent SLR control system (D. Hampf)
					09:30 -	09:45		Potsdam automation (S. Bauer)
					09:45 -	10:00		The new Korean SLR system and its automatic operation (H. Lim)
					10:00 -	10:10		Automated operations in Changchun station: current (part I) (Z. Liang)
					10:10 -	10:20		Mt. Stromlo experience gained with automation: part I (C. Moore)
					10:20 -	10:35		Discussion – Based on the talks and other experiences, what automation is now working/operation in ILRS stations
					10:35 -	11:00		Break
Session 4B - What is Planned for the Next 5
					11:00 -	11:10		Mt. Stromlo automation in progress: part II (C. Moore)
					11:10 -	11:20		Automated operations in Changchun station: plans (part II) (Z. Liang)
					11:20 -	11:30		Plans for a fully automated SGSLR system: part I (J. McGarry)
					11:30 -	11:45		SGSLR acquisition and tracking automation (E. Hoffman)
					11:45 -	12:00		Discussion – Based on the talks, what looks like it might work for other stations? What are the plans for other stations?
Session 4C - Bringing Automation to More ILRS Stations
					12:00 -	12:15		Optimization of Automated Tracking with Situational Awareness (T. Varghese)
					12:15 -	12:30		When Does Automation Make Sense? (R. Ricklefs)
					12:30 -	12:45		Scheduling for the future NASA SGSLR Network (off-shoot of abstract submitted to session 3) (J. Horvath)
					12:45 -	13:15		Discussion – Getting automation to more ILRS stations. Is it for everyone? Where should we be attempting to go?
					13:15 -	14:30		Lunch
Session 4D - Future of Automation in the ILRS and Issues Related to Automation
					14:30 -	14:45		Plans for a fully automated SGSLR system: part II (future of SGSLR Network) (J. McGarry)
					14:45 -	15:00		Safety/Security Concerns when Automating SLR Systems (S. Wetzel/H. Donovan)
					15:00 -	15:30		Discussion – What are the big issues in getting SLR systems fully autonomous? How automated will the ILRS be in 10 years? Where would we like to be? What is realistic?
Session 4E - Posters
					15:30	16:00		Break
Session 5: Wrap-Up
Chairs: Mike Pearlman, Kalvis Salmins
Workshop and Session Summaries
					16:00 -	16:10		Session 1 (Satellite Tracking and Scheduling) Summary (M. Pearlman)
					16:10 -	16:20		Session 2 (Performance Evaluation) Summary (E. Pavlis)
					16:20 -	16:30		Session 3 (Accuracy and Scheduling) Summary (E. Hoffman)
					16:30 -	16:40		Session 4 (Automation and Autonomous Station Operation) Summary (J. McGarry)
					16:40 -	16:55		Workshop Summary and Resolutions (M. Pearlman)
Standing Committee/Study Group Summaries
					16:55 -	17:05		Analysis SC Summary (E. Pavlis)
					17:05 -	17:15		Data Formats and Procedures SC Summary (H. Mueller)
					17:15 -	17:25		Transponder SC Summary (U. Schreiber)
					17:25 -	17:35		Networks and Engineering SC Summary (G. Kirchner)
					17:35 -	17:45		Missions SC Summary (T. Otsubo)
					17:45 -	17:55		Space Debris SG Summary (G. Kirchner)
Other
					17:55 -	18:00		21st International Workshop on Laser Ranging Plans (J. Bennett/M. Fulton)
					18:00 -	18:15		Discussion (M. Pearlman/Kalvis Salmins)
					18:15			Workshop Close
Friday, October 06, 2017
					09:00 -	12:30		SLR station visit - limit 25 per group. Immediately after station visit there will be an option to go straight from SLR station to airport if necessary.

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Posters

Session 1 - Satellite tracking and scheduling
				Combined multi-GNSS+LAGEOS solutions with the focus on SLR station coordinates, Earth rotation parameters, geocenter and the scale of the reference frame (K. Sosnica)
				The Copernicus Sentinel-3 mission and the tandem constellation of Sentinel-3A and -3B (Jaime Fernández)
				COTS reflectors application on Technosat (P. Wang)
				EUROLAS Data Center (EDC) - Updated Procedure for Station History Logs and Site Logs (C. Schwatke)
				Ground station requirements for the ELT experiment (J. Eckl)
				ILRS Site Configuration Project: 2015 Questionnaire Summary (K. Evans)
				ILRS Tracking Data Requirements Survey 2017 (M. Kuzmicz-Cieslak)
				Information on the development of new equipment for the control of the laser station 1824 - Golosiiv-Kyiv (M. Medvedskyy)
				The Progress and developments of Shanghai SLR station (Z. Zhang)
				Transfer Function of the Lares-2 satellite (D. Arnold)
				Visibility Aspects of Station Locations for Space Debris Laser Ranging (C. Bamann)
Session 2 - Performance evaluation
				Model Comparisons and Optimizations of SLR Data Processing (X. Wang)
				Orbit determination and SLR evaluation of China's space laboratory (G. Zhao)
				Required Improvements of Debris Laser Ranging to Support Collision Avoidance solution (B. Reihs)
				Simulation of Multi-Technique Terrestrial Reference Frames with Focus on Benefits from Enhanced SLR Network (R. Koenig)
				The SLR observations to GNSS satellites with improved modelling: Preliminary results and open questions (D. Ampatzidis)
				Studying different tracking strategies to LAGEOS and Etalon with respect to the weekly ILRS solution (F. Andritsch)
Session 3 - Accuracy and scheduling
				The Event Timer A033-ET Family for SLR Automation (V. Bespalko)
				Impact of atmospheric pressure loading on SLR-derived station coordinates using range measurements to multi-GNSS satellites (G. Bury)
				Satellite laser ranging with 1.06μm wavelength in Shanghai SLR station (M. Wendong)
				Scheduling the NASA SGSLR Network (J. Horvath)
				Sensitivity of SLR observations to horizontal gradients of the tropospheric delay (M. Drozdzewski)
Session 4 - Automation and autonomous station operation
				Autonomous Post Processing (C. Moore)
				Mount Stromlo Space Research Centre (C. Moore)
				Satellite laser ranging station "Lviv-1831" in Lviv, Ukraine. Status report. (Y. Blagodyr)
				Scheduling the NASA SGSLR Network (combined with Session 3) (J. Horvath)

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