ELECTRONIC SURVEY SYSTEM.
Abstract
The feasibility of developing an electronic survey system to determine the positions of locators within a circular area of 10 mi diam was studied. An accuracy of 2 1/2 ft is required of the system. The system analyzed has four reference stations (three slave transponders and a master command station) and portable locators (free-running pulse transmitters) as necessary. The locators are interrogated by the master station and their position is computed in real time. The computation is essentially a computation of the intersection of two hyperbolas. The design of a system with available components is described, but analysis indicates that errors of 5 to 8 ft can be expected. Analysis of the characteristics of electromagnetic propagation near the ground indicate that errors due to transmission irregularities can be adequately eliminated. Although some improvements in accuracy might be expected by using improved components, the improvement would not be adequate for this application without high accuracy in positioning reference stations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 30, 1965
- Accession Number
- AD0615392
Entities
People
- Robert S. Goodman
Organizations
- Harry Diamond Laboratories