TESTING AN AIRBORNE LASER PROFILING SYSTEM FOR TERRAIN EVALUATIONS

Authors
  1. Schreier, H.
  2. Lougheed, J.
Corporate Authors
British Columbia Univ, Vancouver BC (CAN) Dept of Soil Science;Defence Research Establishment Suffield, Ralston ALTA (CAN)
MONITOR AGENCY
Davis Engineering Ltd, Ottawa ONT (CAN)
Abstract
Tests were carried out to determine the applications of a near infrared laser as a height and surface reflection measuring device. The system which consists of a laser, an inertial navigation system, and a photogrammetric camera was flown over the NRC-Photogrammetric Test Site in Sudbury and height accuracy comparisons were made between the laser and the conventional photogrammetric technique. In three independent tests using large numbers of control points height differences of 1 cm, 24 cm and 5 cm were found between the two methods and 95% of all the laser data was within 1.80 m of the height determined by photogrammetry. Comparisons between ground surveys and laser measurements were carried out in Petawawa, Ontario and revealed that laser tree height measurements were more accurate than conventional ground survey but laser micro-profiles were found to be less reliable. TRUNCATED
Date of publication
15 Jul 1983
Number of Pages
150
DSTKIM No
84-02012
CANDIS No
121405
Format(s):
Originator's fiche received by DSIS;Hardcopy

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