ISSN:0039-6265    

DOI:10.1179/sre.1978.24.190.338

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

摘要:

AbstractA number of problems associated with the practical use of the gyrotheodolite are examined and some of the ways of determining the null-line of the spinning gyroscope oscillations are reviewed for the tracking and non-tracking procedures, using the manual mode. A summary is given of the relevant formulae and examples are included to illustrate some of the methods. The SHAR effect is considered in relation to the age of the gyro-rotor. A practical example of rotor failure is given. Practical accuracies attainable with standard Wild GAKI gyrotheodolites are demonstrated by means of a number of examples drawnfrom actual engineering projects. The possible use of good standard gyrotheodolites for geodetic purposes is examined.

ISSN:0039-6265    

DOI:10.1179/sre.1978.24.190.339

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

摘要:

AbstractField observations for traverse, triangulation, etc. are basically those of normal section azimuth and spatial distance. This paper presents formulae for computations in terms of such angles and chord distances for the solution of problems related to survey schemes. They are ideal for use with calculator or computer and are accurate for short and long rays.

ISSN:0039-6265    

DOI:10.1179/sre.1978.24.190.361

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

摘要:

AbstractMeasurements were made with a Lacoste–Romberg gravimeter G 88, along the Jos–Zaria–Sokoto and Zaria-Kano roads in order to establish a calibration line along which the constants of other gravimeters in Nigeria could be checked. Starting from the IGSN 7228J base station in Kano, the absolute gravity values for ten stations were determined. The maximum difference measured was 3340.89±0.16 g.u. (334.089±0.016 mgal) between Jos and Lambu Maradun about 80 km from Sokoto.

ISSN:0039-6265    

DOI:10.1179/sre.1978.24.190.373

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1978.24.190.381

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1978.24.190.382

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1978.24.190.384

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1978.24.190.i

出版商:Taylor&Francis    

年代:1978

数据来源: Taylor