APPLICATION OF SMALL AERIAL CAMERAS TO THE COMPILATION OF 1:25,000 SCALE TOPOGRAPHIC MAPS,
Abstract
The 1:20,000 - 1:35,000 scale aerial photography commonly used in compiling 1:25,000 scale topographic maps does not always permit certain interpretation of ground features or correct identification of control points. Experiments in 1965 with supplementary aerial photography at scales of 1:5,000 and 1:8,000 enabled office interpretation reliability about equal to that obtained by field check methods. Tests were carried out with this camera mounted in a pod attached to the landing gear support struts of a helicopter. Such photography permits identification and precise transfer of ground control points to the main survey photographs by means of an interpretscope; permits selective photographic coverage of cultural features constructed subsequent to the main survey photography; and permits timely photographic coverage of shorelines at highest tide and rivers at mean water level. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 10, 1969
- Accession Number
- AD0686977
Entities
People
- A. S. Sudakov
- V. E. Permitin
Organizations
- United States Army Foreign Science and Technology Center