Eur. Phys. J. AP
Volume 10, Number 1, April 2000
|Page(s)||79 - 86|
|Published online||15 April 2000|
Results of the first aircraft experiment with the wide-angle airborne laser ranging system*
École Supérieure des Géomètres et Topographes, CNAM, 1 bd Pythagore, 72000 Le Mans, France
Laboratoire d'Optoélectronique et de Microinformatique, IGN, 2 avenue Pasteur, 94160 Saint-Mandé, France
Corresponding author: email@example.com
Revised: 7 February 2000
Accepted: 24 February 2000
Published online: 15 April 2000
The first aircraft experiment with the wide-angle airborne laser ranging system has been conducted in May 1998 over a small network of 1 km2, equipped with 64 cube-corner retroreflectors. The ranging system was operated from a research aircraft (ARAT, Fokker 27) at an altitude of 1 km. Data have been collected during two 4-hour flights. The paper describes the data processing methods and presents the first results from this experiment. A precision of 2 cm has been achieved on the difference of vertical coordinates from two sets of ~ 3000 distance measurements. Results are consistent with simulations and a posteriori covariance. A drastic data sorting for outliers, due to strong overlap of reflected echoes, has been necessary. Hence, the actual number of measurements and the positioning precision became relatively small. Higher precision is expected in future experiments, once the instrument's link budget will be improved.
PACS: 02.60.Pn – Numerical optimization / 07.05.Kf – Data analysis: algorithms and implementation; data management / 93.85.+q – Instrumentation and techniques for geophysical research
© EDP Sciences, 2000
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