The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part Bl. Beijing 2008
294
5. SUMMARY
This research studied the calibration of a laser altimeter system.
The adjustment model presented enable modelling and
removing the actual errors in laser point sets. By analyzing the
properties of the proposed method, it has been demonstrated
that moderate slopes are sufficient to generate reliable solutions.
The only requirement consists in having the surface elements
oriented in different directions. The compelling conclusion is
that natural terrain will yield results that are accurate and
reliable.
In addition to the effort of developing a robust method based on
tie-planes, the extraction of other tie-features (e.g. lines) will be
investigated. Finally, it is noted that in the case where aerial
photographs are taken during an ALS mission, the ALS and
photogrammetric observations can be processed together in one
simultaneous block adjustment.
REFERENCES
Crombaghs, M., E. De Min and R. Bruegelmann (2000). On the
Adjustment of Overlapping Strips of Laser Altimeter Height
Data. International Archives of Photogrammetry and Remote
Sensing, 33(B3/1): 230-237.
Filin, S., Vosselman, G, 2004. Adjustment of airborne laser
altimetry strips. International Archives of Photogrammetry,
Remote Sensing and Spatial Information Sciences 34 (Part B3),
285-289.
Huising, E. J. and L. M. Gomes Pereira (1998). Errors and
accuracy estimates of laser data acquired by various laser
scanning systems for topographic applications. ISPRS J. of
Photogrammetry and Remote Sensing, 53(5): 245-261.
Lee, I., Schenk, T., 2001. Autonomous extraction of planar
surfaces from airborne laser scanning data. In Proceedings of
the Annual Conference of the American Society of
Photogrammetry and Remote Sensing (ASPRS), St. Louis, MO,
USA.
Lichti, D., 2004. A resolution measure for terrestrial laser
scanners. International Archives of Photogrammetry, Remote
Sensing and Spatial Information Sciences 34 (Part B5),
552-558.
Soininen,A., Burman,H., 2005. TerraMatch for MicroStation.
Terrasolid Ltd, Finland.
