Share Email Print
cover

Proceedings Paper

Low-elevation transmission measurements at EOPACE III. Scintillation effects
Author(s): Arie N. de Jong; Gerrit de Leeuw
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

This paper concerns the effect of scintillation on the detection range of infrared sensors, where frame rate appears to play an important role. During EOPACE scintillation measurements were carried out over the Monterey and San Diego Bay. For this purpose 2 kinds of sources were used, either a source, modulated with 1000 Hz, or a DC searchlight source. The detector was a silicon detector with a narrow bandfilter around 0.85 tim. The results show that scintillation is always present, even when locally the air to sea temperature difference (ASTD) is close to zero. This indicates that large ASTD variations may occur along the measurement path. The magnitude of the scintillation agrees reasonably well with the theory. This means a big advantage for high frame rate sensors in comparison with low frame rate sensors for detection of point targets at low elevation.

Paper Details

Date Published: 23 September 1997
PDF: 13 pages
Proc. SPIE 3125, Propagation and Imaging through the Atmosphere, (23 September 1997); doi: 10.1117/12.279019
Show Author Affiliations
Arie N. de Jong, TNO Physics and Electronics Lab. (Netherlands)
Gerrit de Leeuw, TNO Physics and Electronics Lab. (Netherlands)


Published in SPIE Proceedings Vol. 3125:
Propagation and Imaging through the Atmosphere
Luc R. Bissonnette; Christopher Dainty, Editor(s)

© SPIE. Terms of Use
Back to Top