Real-Time GNSS Networks | Part 1 of 4: RTN Alignment – User Perspective | Lecture by Chase Simpson скачать в хорошем качестве

Real-Time GNSS Networks | Part 1 of 4: RTN Alignment – User Perspective | Lecture by Chase Simpson

Real-Time GNSS Networks | Part 1: RTN Alignment – User Perspective Lecturer: Chase Simpson, Oregon State University Moderator: Dave Zilkoski, Retired, NGS Director This first part of the Real-Time GNSS Networks series focuses on the fundamentals of RTN alignment from the user’s point of view. Chase Simpson explains how RTN alignment works, why it matters, and what users should consider when working with real-time GNSS correction services. In this session, you will learn: • What RTN alignment is and why it is essential • Key factors that influence RTN performance • Practical considerations for accuracy, consistency, and reliability • How users can evaluate network alignment quality • Field examples and real-world implications 0:05 Introduction & session overview – Dave Zilkoski 0:32 Structure of the session (4 parts, presentations + Q&A) 0:39 Speaker introductions – Chase Simpson 0:46 Chase Simpson bio and role at Oregon State University 1:30 Start of Chase’s presentation – goals of the talk 2:19 Funding sources and disclaimer (NOAA/NGS and ODOT) 3:00 Outline of Parts 1–4 of the RTN series 4:31 “Is RTN the same as RTK?” – single-base RTK vs RTN 5:12 Single-base RTK concept and workflow (base + rover) 6:58 RTK surveys, baseline length rules, and satellite requirements 9:28 Common RTK/RTN error sources (multipath, PDOP, blunders, links) 12:44 Introduction to real-time networks (RTNs) and their advantages 14:31 VRS vs MAC concepts in network RTK 18:31 Modeling troposphere/ionosphere – single-base vs network RTK 20:00 Summary of RTN benefits 22:07 RTN limitations (cost, coverage, downtime, density, latency) 24:54 Recommended field procedures and bench checks for RTN users 29:50 How long should RTN observations be? – OSU duration study 32:44 How many redundant observations? – 5-minute loops and results 36:31 Hybrid networks: combining static GNSS with RTN baselines 39:26 Using RTN for project control with total station and leveling 45:02 Impact of adding leveling and angle sets; accuracy improvements 46:56 Practical accuracy recommendations and NOS-92 connection 48:07 Why results vary: sky visibility, multipath, network density 50:09 Additional survey planning considerations and PDOP tools 51:06 Wrap-up, questions, and contact info for Chase Simpson 51:29 Transition to Part 2 – Q&A session This lecture was recorded as part of the AAGS YouTube webinar series designed to support geomatics, geodesy, and surveying education. If you have questions or would like to contribute a topic for future sessions, feel free to leave a comment. #GNSS #RTN #RealTimeGNSS #RTNAlignment #Surveying #Geodesy #Geomatics #GNSSNetworks #AAGS #OSUGeomatics #OregonStateUniversity #Positioning #GeodeticSurveying #Mapping #EngineeringSurveying