TEST RESULTS ON GYROTHEODOLITES,
Abstract
Test operation of the instruments have shown that: (1) The Gi-B1 gyrotheodolites, which are produced in Hungary, provide for autonomous determination of the azimuths of orienting directions with a mean-square error of + 20 sec within 40-60 minutes. (2) The instrument is easy to handle and is simple to operate. The majority of the instruments function flawlessly and yields reliable results; however, some of them do not provide for stability of the constant correction of the instrument. Drawbacks in the design of the instruments are the lack of automatic tracking of the position of the resection points, as well as the long time (up to 90 minuts) required for the power pack to warm up when operating under low-temperature conditions. To date field tests on two experimental models of the Gi-B2 gyrotheodolite have been carried out. Out of 139 runs by these instruments, carried out over a period of 20 days at latitudes of 45-60 deg, the mean-square error in determining the direction from one run was equal to about + 10 sec. In the course of transporting the instrument about 3000 km by motor vehicle and about 2000 km in an aircraft, no changes were detected in the rated value of the constant correction. Chilling them twice to temperatures of -30 and -40C did not lead to a reduction in their operating precision. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1966
- Accession Number
- AD0641274
Entities
People
- Yu. V. Sergovskii