The purpose of this study was to examine the feasibility of developing a relatively inexpensive technique by which aerial photography could be accomplished using retroreflectors as survey control points. Strobe lights mounted next to the aerial camera and synchronized to the shutter would produce the light that is reflected from the retroreflectors into the camera aperature producing target images on the aerial negative. It was determined that a strobe camera system could be used to obtain target images at 1500 feet flying heights using standard highway delineators as targets. The delineator targets are economical and satisfactory for higher altitude flights if the strobe light candlepower is increased.
Study and Development of Advanced Survey Systems and Techniques
1974
70 pages
Report
Keine Angabe
Englisch
Advanced recovery techniques for advanced launch systems
AIAA | 1989
|Advanced threshold reduction techniques study
TIBKAT | 1967
|Advanced Pattern Recognition Techniques for System Monitoring and Diagnosis : a Survey
British Library Online Contents | 1997
|