Accession Number:

AD0642295

Title:

PRACTICAL FIELD ACCURACY LIMITS FOR A WILD T-2 THEODOLITE

Descriptive Note:

Technical rept.

Corporate Author:

ARMY ENGINEER GEODESY INTELLIGENCE AND MAPPING RESEARCH AND DEVELOPMENT AGENCY FORT BELVOIR VA

Personal Author(s):

Report Date:

1966-08-01

Pagination or Media Count:

157.0

Abstract:

The report covers the results of field tests of the Wild T-2 Theodolite performed to determine the field accuracy limits of this instrument, thereby establishing the design goal for an All-Weather Angle-Measuring Instrument under consideration. Analyses of data indicate that this particular test instrument is capable of measuring an angle 90 percent of the time to an accuracy of plus or minus 2.5 when 16 D and R readings are observed during daylight hours the accuracy of angular measurement is plus or minus 2.0 during nighttime, 90 percent of the time and the accuracy limits are reduced from plus or minus 2.5 to plus or minus 2.0 and from plus or minus 2.0 to plus or minus 1.5 if data are gathered when the atmosphere is quiet. The report concludes that angular accuracy is not improved by employing horizon closure techniques, and that proper selection of the survey sites is one of the more important factors to consider when the mission requires high accuracy.

Subject Categories:

  • Geodesy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE