ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.154

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

摘要:

AbstractNumerous papers in theEmpire Survey Reviewduring the past few years testify to the widespread use of the semi-graphic method of adjustment for fixing new points within a network of previously established stations when theodolite observations only have been taken. Furthermore, as Mr. H. S. Williams has pointed out in the last two paragraphs of Section B of his article (E.S.R., xvi,119), the method, suitably modified, can be satisfactorily applied to an isolated triangulation scheme extended off a measured base.

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.157

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

摘要:

AbstractThus far, it has been possible to regard all observations from latitudes of some 2°North or South as being made from the equator. For this determination, however, more precision is required.

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.165

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

摘要:

AbstractA theory is developed for the adjustment of any centre-point-polygon, and a doubly-braced quadrilateral is shown to be a particular case of the general theory.The method of graphical determination of coefficients is treated.If the weight of a length measurement is taken as inversely proportional to length, the algebraic sum of all length adjustments is shown to be zero.A method is developed for obtaining adjustments to computed angles.The theory is applied to a worked example.

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.173

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

摘要:

AbstractOne of the principal commitments of the Survey of Kenya is the continuous routine production of Land Registry plans of African agricultural holdings. The properties are physically defined on the ground by perimeter hedges which form the legally accepted boundaries. The task is, therefore, one of identifying and mapping many hundreds of thousands of hedged boundaries. Mapping is carried out to plottable accuracy on a stable medium (astrafoil) at uniform scale of 1/2,500.

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.182

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

摘要:

AbstractEarly in 1960 serious consideration was given to the possibility of undertaking a programme of primary levelling in Tanganyika. The advice and comments of the survey organisations in Southern Rhodesia, Kenya and Uganda were invited, and the possibility of linking the level networks of the four territories was investigated. As a result, the scheme illustrated on the map of Tanganyika, Plate XVIII, was decided upon. The routes chosen follow the railway lines, where such exist, in preference to the main roads; the possibility of road re-alignments disturbing the intermediate bench marks out-weighed the very real problems of accessibility, water and communications along the railways. It is arguable, however, whether Tanganyika roads are any more liable to re-alignment than the railways.

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.186

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.194

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.195

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.196

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1963.17.130.197

出版商:Taylor&Francis    

年代:1963

数据来源: Taylor