Accession Number:

ADA954108

Title:

Helicopter Survey Methods for Mapping.

Descriptive Note:

Interim rept.,

Corporate Author:

ARMY ENGINEER RESEARCH AND DEVELOPMENT LABS FORT BELVOIR VA

Personal Author(s):

Report Date:

1948-03-15

Pagination or Media Count:

52.0

Abstract:

This 1948 interim report covers an investigation and field tests conducted to determine the feasibility of using a helicopter to serve as a visible signal for triangulation and trigonometric leveling in establishing secondary control for mapping in difficult terrain. The purpose is to develop and test a method for establishing secondary control points for topographic mapping in which a helicopter is used as a signal for horizontal and vertical direction observations from ground stations of known position and elevation. The minimum accuracies acceptable are 1 part in 2,000 in horizontal position and plus or minus 5 feet in elevation.

Subject Categories:

  • Cartography and Aerial Photography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE