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A microlight aircraft was used to obtain and record concurrent, near-continuous, spectral responses in the MSS and SPOT bands over various ground features. The experiment was performed in Mali, along the Niger river, during November, 1985. The airborne instrumentation, developed as a prototype for this experiment, also included flying-height measurements by a laser range-finder and a colour video-camera. Spectral data and flying height (5 to 80 m) were scanned every 0.1 s and recorded on the audio channel of a videotape, after multiplexing and analogue to digital conversion (8 channels). The measuring and recording system, although light and simple, proved to be very efficient for automatic survey in a tropical environment. Spectral reflectance profiles were feasible in a very short time over a wide range of objects, and height measurements provided very useful information for the geometric description of the vegetation cover. Microlight aircraft are therefore highly suitable as platforms for low-cost aerial survey including large-scale photography and complementary to conventional methods.

Additional information

Authors: GREGOIRE J M, JRC Ispra Estab. (IT)
Bibliographic Reference: Article: Photogrammetria (PRS), Vol.43 (1988), pp.37-44
Record Number: 198910020 / Last updated on: 1994-12-01
Original language: en
Available languages: en