摘要:

AbstractA short description is given of a newly developed system for electronic data processing of detail surveying in the“Offset System”. In this system the field measurements are analytically restituted with the help of an electronic computer and an automatic coordinatograph. The computer processes the field data into a“Numerical Map”which is in a form adequate for a direct input into an automatic coordinatograph for the production of a“Graphical Map”automatically. The basic rules of the system, the logical structure and the programme written for the electronic computer are briefly discussed.

ISSN:0039-6265    

DOI:10.1179/003962665791276579

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

AbstractThe Twentieth International Geographical Congress was held in London between 20th and 28th July, being formally opened by H.M. the Queen on 21st July, 1964. It was attended by some 2500 delegates from 68 countries. Section IX of the Congress was devoted to Cartography, although the production of specialist maps was also discussed by a number of other Sections and Commissions, notably in Commission 8“National Atlases”and Commission 14“World Population Map”.

ISSN:0039-6265    

DOI:10.1179/003962665791276560

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

AbstractThe height-pressure formula has been applied to the accurate calculation of mean temperatures in atmospheric layers. In geodetic applications of electromagnetic distance measurement,“hypsometric”temperature thus obtained affords a better value for the average refractive index than the terminal mean if the difference in elevation amounts to more than about 300 feet. A numerical example has been calulated using the meteorological data of a tellurometer line with a slope of 539 metres.

ISSN:0039-6265    

DOI:10.1179/003962665791276605

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

AbstractAs a numerical example the case of Fig. 2 will be discussed.

ISSN:0039-6265    

DOI:10.1179/003962665791276542

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

AbstractVarious combinations of base and subtense angle are employed in indirect distance measurement. A new device is described which is attached to a theodolite, enabling it to function as a rangefinder. The advantages of a rangefinder are retained, without the necessity for a specialised instrument. There are applications in surveys normally performed by tacheometry and in surveying inaccessible sites which often occur in engineering and mining surveys.

ISSN:0039-6265    

DOI:10.1179/003962665791276551

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

AbstractThe application of height traversing with reduction tacheometers in lieu of ordinary series levelling is investigated. A simple but realistic method of adjusting the closing error in height of such a traverse is outlined and an expression, independent of the nature of the terrain, derived for the maximum error in height tolerable over a height traverse.The propagation of error along a test line under the most unfavourable conditions is studied and it is shown that the heights of over 90% of stations established have errors in plan position of less than 0.02 in.

ISSN:0039-6265    

DOI:10.1179/003962665791276641

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

AbstractThe word“cybernetics”, adopted internationally for the theory and science of automatics, is derived from the Greek wordkubernetesmeaning“steersman”. At present, while everybody is discussing the second industrial revolution caused by the advent of automation and its possible consequences on our society, the survey world sometimes seems to take little notice of these developments and not much has been published in the Commonwealth summarising the influence which automation may have on surveying.

ISSN:0039-6265    

DOI:10.1179/003962665791276623

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

AbstractIn co-operation with Messrs. Fairey Surveys Ltd. and the School of Military Survey, an experiment has been run with a view to determining the feasibility of point signalisation for 1/40,000 scale photography, and the accuracy of co-ordination of such signalised points when the photographs are suitably exposed on fine grain film in an RC8 camera and measured in first-order plotting machines. The paper describes the experiment and the results obtained.

ISSN:0039-6265    

DOI:10.1179/003962665791276597

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/003962665791276632

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

ISSN:0039-6265    

DOI:10.1179/003962665791276588

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor