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Deformation Integrity Monitoring for GNSS Positioning: The Karlsruhe Approach (MONIKA)

This presentation covers the MONIKA software, a robust solution for monitoring deformation integrity in GNSS positioning services. It details the methodology behind GNSS-based monitoring, including data interfaces, baseline processing, epoch adjustments, and comprehensive deformation analysis. The Karlsruhe approach enables high sensitivity in detecting significant deformations across reference points, enhancing the capability of GNSS networks like SAPOS and EUREF. Key mathematical models and automatic processes are outlined, illustrating advancements in hazard monitoring and geodynamic analysis.

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Deformation Integrity Monitoring for GNSS Positioning: The Karlsruhe Approach (MONIKA)

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Presentation Transcript

  1. Deformation Integrity Monitoring forGNSS-Positioning Servicesincluding a Scalable Hazard Monitoringby the Karlsruhe Approach (MONIKA) - Concept, Realisation and Results - Speaker: Dipl.Ing. Peter Spohn

  2. Content 3. MONIKA Software 3.1 Data interfaces 3.2 Baseline processing 3.3 Epoch definition 3.4 Epoch adjustment 3.5 Plate-Rotation 3.6 Deformation analysis 3.7 Automatications 2. Mathematical Model 2.1 Step 1 2.2 Step 2 2.3 Step 3 2.4 Transformations 2.5 Step 4 2.6 Further analysis 1. Introduction 4. SAPOS-BW 2008 Solutions 5. EUREF 2008 Solutions 6. Further Developments

  3. 1. Introduction - GNSS positioning services (ex. SAPOS) - GNSS networks (ITRF, EUREF, MOLDPOS…) 1. Introduction

  4. 1. Introduction How to control reference points? Common solutions: - Network adjustment with one fixpoint and coordinate differences - Network adjustment with Helmert transformation and coordinate comparing  not very sensitive! MONIKA solution: - Deformation analysis with all reference points  highly sensitive!

  5. 2. Mathematical Model 2. Mathematical Model Overview

  6. 2. Mathematical Model • 2.1 Step 1 - Raw-Data-Processing • RINEX-Data • to baselines / networks 2. Mathematical Model • 2.2 Step 2 - Epoch definition • suggested deformations • total time span • of the analysis

  7. 2. Mathematical Model 2.3 Step 3 - 3D Network-Adjustment • Input: Baselines/Sessions • 3D Network adjustment • Quality control • Output: Epochs

  8. 2. Mathematical Model 2.3 Transformations • Tectonic plate rotation of all epochs to one reference time (fixed networks) • In case of free networks, an automatical S-Transformation is calculated to get an compareable network datum for all epoches

  9. 2. Mathematical Model 2.4 Step 3 - Deformation Analysis • Model of a multiepochal and multivariate, coordinate depending deformation analysis

  10. 2. Mathematical Model • Expension of the mathematical model i-th reference point in the k-th epoch Deformation values of all reference points • Testvalue for the reference points If a significant deformation is found, a new deformation analysis is calculated (iterative datasnooping process)

  11. 2. Mathematical Model Further calculations • Multiple coordinate differences • 3D/2D confidence areas • Network sensivity • Object point tests • Epoch tests

  12. 2. Mathematical Model 2.5 Further analysis • Time series • Kalman filtering

  13. 3. MONIKA Software 3. MONIKA Software Overview

  14. 3. MONIKA Software 3.1 Data interfaces • Interfaces: • RINEX-Data • SINEX-Data • free ASCII-Interfaces • (Baselines, Epochdata, ...) • 3.2 Baseline processing • WA1 (Wanninger Software), directly supported • Bernese 5.0, supported via SINEX-Interface • other baseline processing software

  15. 3. MONIKA Software 3.3 Epoch definition • Input-Data • Sessions/Baselines • SINEX-Data with timestamps Expected deformations?

  16. 3. MONIKA Software 3.4 Epoch adjustment • Input-Data • Sessions/Baselines • SINEX-Data • Epoch timespan • 3D Epoch adjustment with GPS3D • Output-Data • Coordinates with covariance matrix (epoch) • Detailed HTML-protocol and visualization

  17. 3. MONIKA Software 3.5 Plate rotation Necessary when large GNSS-networks or a long timespan is calculated

  18. 3. MONIKA Software 3.6 Deformation Analysis • Input-Data • Epochs (free interface) • Deformation Analysis • Iterative datasnooping • Final deformation analysis • Output-Data • Coordinates, Cxx matrix • GOCA-Interface • Visualization • Time series • HTML-Protocol • GoogleEarth

  19. 3. MONIKA Software Overview

  20. 3. MONIKA Software 3.7 Automatications • Automatic epoch generation • Input: SINEX-Data • Output: Epochs • Automatic deformation analysis calculation • Input: Epochs • Output: Solutions are saved in a MONIKA-Savefile, HTML-Protocol, individual Interface-Files • Automatic visualisation (GOCA-Earth, Addon) • Input: Interface file • Output: Visualisation in GoogleEarth + flexible folder-based file handling

  21. 4. SAPOS-BW 2008 Solutions 4. SAPOS-BW 2008 GNSS reference network in Germany Baden-Württemberg - area: 200 x 200 km - 36 stations - free network

  22. 4. SAPOS-BW 2008 Solutions horizontal sensitivity ~ 2 mm 4. SAPOS-BW 2008 seasonal movement in the summer months

  23. 4. SAPOS-BW 2008 Solutions vertical sensitivity ~ 6 mm 4. SAPOS-BW 2008 displacement because of an antenna change

  24. 5. EUREF 2008 Solutions 5. EUREF 2008 EUREF Reference Network - area: ~ 4000x3000 km - ~74 stations - fixed network

  25. 5. EUREF 2008 Solutions 5. EUREF 2008  horizontal confidence belt ~ 2 - 5 mm, POUS (Poustka, CZ)

  26. 5. EUREF 2008 Solutions KARL (Karlsruhe, DE), light seasonal movement 5. EUREF 2008 spring 2008 summer 2008 winter 2008

  27. 6. Further Developments • GNSS-based longterm monitoring of geodynamic active earthquake zones 6. Further Developments Basel, 1356 • Implementation of virtual sensors • More complex models • for ex. deformation of point groups and areas

  28. MONIKA MONIKA

  29. End Thank you for your attention ! Any questions?

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