摘要:

AbstractThe emergence of renaissance science in Europe had its effect on land survey practice in Tudor England. In this paper the work of Edward Worsop is cited to show how some of these influences changed land surveying from a mediaeval practice with magical and sinister connotations to a recognisably modern technique, founded on geometrical principles, with a professional attitude on the part of its practitioners.

ISSN:0039-6265    

DOI:10.1179/sre.1993.32.248.67

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

摘要:

AbstractA common problem in surveying practice is the partitioning of a land parcel into parts by lines of known direction. Part solutions have been based either on closed mathematical expressions or on approximate trial and error techniques and demand the use of semi-analytical methods. For this reason they are not appropriate in developing algorithms suitable for automation and the difficulties are more evident when the problem is to be solved repeatedly. An efficient algorithm is presented for application to convex polygons using coordinates. The algorithm does not require interactive manipulations and leads automatically to the exact solution. The main feature is a searching strategy in order to determine intersections between a clipping line and the polygon. An example is included in order to clarify the basic algorithmic steps, together with a program written in pseudo-code which facilitates the transformation of the algorithm into any specific computer language.

ISSN:0039-6265    

DOI:10.1179/sre.1993.32.248.80

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

摘要:

AbstractA method has been developed for the area computation of a polygon on an ellipsoid. The sides of this polygon may be geodetic lines, loxodromes, great circles or a combination of these lines.

ISSN:0039-6265    

DOI:10.1179/sre.1993.32.248.92

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

摘要:

AbstractIn this paper a series of both conventional and new tests concerning the operation of the digital level WILD NA2000 in laboratory and field conditions are presented. Comparisons are also made between the NA2000 and the optomechanical level WILD NA2 and results are discussed.

ISSN:0039-6265    

DOI:10.1179/sre.1993.32.248.99

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

摘要:

AbstractAbsolute laser distance interferometry, as a means of precise linear measurement, may be used particularly, in geodetic metrology for establishing interference base-lines. The main principles of absolute interferometric distance measurement are described and different versions of the technique are reviewed. Experimental results in this field are discussed and information concerning interferometers under development is given.

ISSN:0039-6265    

DOI:10.1179/sre.1993.32.248.109

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1993.32.248.118

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1993.32.248.121

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/sre.1993.32.248.122

出版商:Taylor&Francis    

年代:1993

数据来源: Taylor