Proceedings of Symposium on Remote Sensing and Photo Interpretation: Proceedings of Symposium on Remote Sensing and Photo Interpretation

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Multivolume work

Persistent identifier:: 842147969

Title:: Proceedings of Symposium on Remote Sensing and Photo Interpretation

Sub title:: October 7 - 11, 1974, Banff, Alberta, Canada

Year of publication:: 1974

Place of publication:: Ottawa, Ontario

Publisher of the original:: Canadian Inst. of Surveying

Identifier (digital):: 842147969

Language:: German

Other Title:: Nebentitel: Proceedings : Symposium on Remote Sensing and Photo Interpretation

Corporations:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Adapter:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Founder of work:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Other corporate:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Document type:: Multivolume work

Volume

Persistent identifier:: 84214806X

Title:: Proceedings of Symposium on Remote Sensing and Photo Interpretation

Sub title:: October 7 - 11, 1974, Banff, Alberta, Canada

Scope:: VII, 465 Seiten

Year of publication:: 1974

Place of publication:: Ottawa, Ontario

Publisher of the original:: Canadian Inst. of Surveying

Identifier (digital):: 84214806X

Illustration:: Illustration, Diagramme, Karten

Signature of the source:: T 15 B 1305

Language:: German

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Corporations:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Adapter:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Founder of work:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Other corporate:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2015

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: ENVIRONMENTAL MONITORING CHAIRMEN. - J. MACDOWALL - N. OPRESCU

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: FOREST FIRE SPREAD AND ENERGY OUTPUT DETERMINED FROM LOW ALTITUDE INFRARED IMAGERY. B. D. Lawson

Document type:: Multivolume work

Structure type:: Chapter

363 - FOREST FIRE SPREAD AND ENERGY OUTPUT DETERMINED FROM LOW ALTITUDE INFRARED IMAGERY B. D. Lawson Department of the Environment, Canadian Forestry Service, Canada ABSTRACT A commercially available infrared imaging system, AGA Thermovision 680, has been adapted to provide forest fire behavior research data which is used in the development of forest fire control guidelines. The infrared system is mounted in a light aircraft and imagery of forest fires is flown at altitudes ranging from 300 to 3700 m above the fire, depending on fire size. Ten-color imagery is produced on a cathode ray tube monitor and recorded by 35 mm camera on demand. Photo interpretation involves measuring a fire's rate of advance over discrete time intervals by correcting successive photographs of the infrared imagery for scale and tilt and measuring the displacement of the fire frontal positions on each pair of photographs. Relative fire energy outputs can be compared among fires by using the infrared imagery to integrate temperature and area over time. This application of infrared sensing has made quantitative measure ments of fire behavior available to the researcher which formerly could be obtained only from ground instrumented test fires. Operational wildfire behavior can now be mapped and quantified at reasonable cost, opening up a large new source of research data of potential benefit to fire suppression operations. RESUME Un système de photo-technique a l'infrarouge peut maintenant s’obtenir dans le commerce. C'est l’appareil AGA Thermovision 680 qui a été adapté pour fournir des renseignements sur le comportement d’un feu de forêt. On emploie ces données pour établir et développer des démarches pour contrôler un feu de forêt. Le dispositif à l'infrarouge est monté dans un petit avion volant à des altitudes allant de 300 à 3700 m au-dessus du feu suivant son envergure, dans le but d'obtenir des photos de feux de forêt. Cette image à dix couleurs est produite sur une lampe monitor a rayons cathodiques et enregistrée à volonté par un appareil photographique de 35 mm. L'interprétation des photos comprend le calcul de la vitesse de progression d'un feu sur des intervalles de temps distincts en corrigeant les photos successives de l'image a l'infrarouge pour l'échelle et l'inclinaison et le calcul du déplacement des positions frontales du feu sur chaque paire de photos. Les rendements de l'énergie relative du feu peuvent être comparés

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fullscreen: Proceedings of Symposium on Remote Sensing and Photo Interpretation (Volume 1)

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