DGPS-and INS-BasedOrthophotogrammetry on Micro UAV Platformsfor Precision Farming Services<br />Jakob Geipel, Christian Kn...
Overview<br />1. Introduction<br />2. Example Use Case<br />3. System Architecture for DGPS <br />4. Status and Perspectiv...
Introduction<br />Ifgicopter - project description:<br /><ul><li>Aim: Using an Unmanned Aerial Vehicle (UAV) as a platform...
highflexibility
little operating costs
practicability  </li></ul>http://purl.net/ifgi/copter<br />3<br />
Introduction<br /><ul><li>Fields of work
flightplanningsoftware
communicationframework
creation of (infrared) remote sensing products
analysis of climate phenomena
accurate positioning via differential GPS (DGPS)</li></ul>http://purl.net/ifgi/copter<br />4<br />
Sensor Platforms<br />http://purl.net/ifgi/copter<br />5<br /><ul><li>Mikrokopter                                         ...
Microdrone (MD4-200)                                                            (ready-to-useproduct)</li></ul>www.microdr...
Example Use Case<br /><ul><li>Precision Agriculture
Detectheterogeneities in agriculturalfieldswithin a sub-fieldscale</li></ul>http://purl.net/ifgi/copter<br />6<br />
http://purl.net/ifgi/copter<br />Example Use Case<br /><ul><li>Precision Agriculture – weed control</li></ul>7<br />
http://purl.net/ifgi/copter<br />Example Use Case<br /><ul><li>Precision Agriculture – weed control</li></ul>8<br />
http://purl.net/ifgi/copter<br />Example Use Case<br /><ul><li>Precision Agriculture – weed control</li></ul>9<br />
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DGPS- and INS-Based Orthophotogrammetry on Micro UAV Platforms for Precision Farming Services

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Held at the Geoinformatics 2011 Conference in Muenster, Germany.
June 17th, 2011
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DGPS- and INS-Based Orthophotogrammetry on Micro UAV Platforms for Precision Farming Services

  1. 1. DGPS-and INS-BasedOrthophotogrammetry on Micro UAV Platformsfor Precision Farming Services<br />Jakob Geipel, Christian Knoth, <br />Olga Elsässer, Torsten Prinz<br />Institute forGeoinformatics – University ofMuenster<br />Geoinformatics 2011, Muenster, 2011-6-17<br />http://purl.net/ifgi/copter<br />
  2. 2. Overview<br />1. Introduction<br />2. Example Use Case<br />3. System Architecture for DGPS <br />4. Status and Perspective<br />http://purl.net/ifgi/copter<br />2<br />
  3. 3. Introduction<br />Ifgicopter - project description:<br /><ul><li>Aim: Using an Unmanned Aerial Vehicle (UAV) as a platformforgathering all kindsofsensordata
  4. 4. highflexibility
  5. 5. little operating costs
  6. 6. practicability </li></ul>http://purl.net/ifgi/copter<br />3<br />
  7. 7. Introduction<br /><ul><li>Fields of work
  8. 8. flightplanningsoftware
  9. 9. communicationframework
  10. 10. creation of (infrared) remote sensing products
  11. 11. analysis of climate phenomena
  12. 12. accurate positioning via differential GPS (DGPS)</li></ul>http://purl.net/ifgi/copter<br />4<br />
  13. 13. Sensor Platforms<br />http://purl.net/ifgi/copter<br />5<br /><ul><li>Mikrokopter (buildingkit)
  14. 14. Microdrone (MD4-200) (ready-to-useproduct)</li></ul>www.microdrones.de<br />
  15. 15. Example Use Case<br /><ul><li>Precision Agriculture
  16. 16. Detectheterogeneities in agriculturalfieldswithin a sub-fieldscale</li></ul>http://purl.net/ifgi/copter<br />6<br />
  17. 17. http://purl.net/ifgi/copter<br />Example Use Case<br /><ul><li>Precision Agriculture – weed control</li></ul>7<br />
  18. 18. http://purl.net/ifgi/copter<br />Example Use Case<br /><ul><li>Precision Agriculture – weed control</li></ul>8<br />
  19. 19. http://purl.net/ifgi/copter<br />Example Use Case<br /><ul><li>Precision Agriculture – weed control</li></ul>9<br />
  20. 20. http://purl.net/ifgi/copter<br />Example Use Case<br /><ul><li>Precision Agriculture – weed control</li></ul>10<br />
  21. 21. http://purl.net/ifgi/copter<br />Example Use Case<br /><ul><li>Precision Agriculture – weed control</li></ul>11<br />
  22. 22. Example Use Case<br /><ul><li>Problem
  23. 23. IndirectGeoreferencing exteriororientationisdeterminedusingGroundControl Points (GCPs)
  24. 24. GCPs areoftenhardtoestablish
  25. 25. A georeferencing method without the need for GCPs would be beneficial</li></ul>http://purl.net/ifgi/copter<br />12<br />
  26. 26. Direct Georeferencing<br /><ul><li>Exterior orientation of the camera is determined by its position and orientation
  27. 27. Heading is measured by the inertial navigation system (INS)
  28. 28. Position is measured by GPS
  29. 29. Rectification quality depends on accuracy of the position and orientation measurements</li></ul>http://purl.net/ifgi/copter<br />13<br />
  30. 30. GPS – approximate accuracies<br />http://purl.net/ifgi/copter<br />14<br />GPS<br />DGPS (SBAS)<br />DGPS (GBAS)<br />10<br />5<br />15<br />surveying<br />guess<br />[m]<br />
  31. 31. System Architecture<br />http://purl.net/ifgi/copter<br />15<br />Ground Station<br />Flight Control<br />Radio Modem<br />SAPOS GBAS<br />Navigation Control<br />GPS Receiver<br />positiondata<br />positiondata<br />DGPS position, time andorientation<br />DGPS positionand time<br />DGPS position, time andorientation<br />correctiondata<br />correctiondata<br /><ul><li>accurate positioning enabling precise navigation e.g. for close-range inspections
  32. 32. accurate exterior orientation for direct georeferencing of aerial images</li></li></ul><li>Current Status<br />http://purl.net/ifgi/copter<br />16<br /><ul><li>hardwarecomponentshavebeensuccessfullyimplemented
  33. 33. positioningworksunderlaboratoryconditions
  34. 34. accuracytestsofproducedorthophotosaretobedone</li></li></ul><li>Perspective<br />http://purl.net/ifgi/copter<br />17<br /><ul><li>positioning via Real Time Kinematic (RTK)</li></ul>GPS<br />DGPS (SBAS)<br />DGPS (GBAS)<br />10<br />5<br />15<br />surveying<br />guess<br />[m]<br />
  35. 35. Perspective<br />http://purl.net/ifgi/copter<br />18<br /><ul><li>Integrationofresultsinto web services</li></li></ul><li>Thankyouforyour attention!<br />Questions?<br />http://purl.net/ifgi/copter<br />http://purl.net/ifgi/copter<br />19<br />

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