Author Archive
Application of GPS
Application to surveying Establishment of high precision zero order geodetic national survey control network of GPS station connecting Remote Island to mainland geodetic control networks. Survey control for topographical and cadastral surveys. Ground control for photogrammetric control
What is a global positioning system
The global positioning system [GPS] is a navigation system used for determining one’s precise location and providing a highly accurate time reference almost anywhere on earth or in earth orbit. It is a fast and accurate method
What is electronic distance meter
In the direct measurement, the help of tape, the distance measurement can fully be obtained, but direct measurement sometimes becomes difficult when the terrain is rough or when the site is congested. In such case electronics distance
What is a total station?
When digital theodolite is fitted with electronic distance measuring units so that the distances and angles can be measured simultaneously they become total station these are operated using a multi-faction keyword which is connected to a microprocessor
Principals of surveying
Surveying involves different operation and techniques, but all these are based on the following principals such as: To work from whole to part Location of a point of measurement from two of reference. The work from whole
Working principle of E.D.M
These operate on the principle that transmitter at the master station sends modulated continuous carrier wave to a receiver at the remote station from which it is returned. The instruments measure slope distance D between transmitter and
Applications of total station
To measure horizontal and vertical angles. To obtain the horizontal distance, inclined distance and vertical distance between these points. To get the three-dimensional co-ordinates i.e.[x,y,z] of a point in space. To find the length of a missing
Electronic distance meter (EDM)
To measure horizontal distance, sloping distance and vertical distance between two points. To get the elevation of the remote object. To set the point at a predetermined distance along grid lined. To align the electronic plots or
Digital theodolite
Digital theodolites differ in detail from the older venire models, although in general principals they are much the same. However, these are becoming popular because digital theodolites are light and compact and with a distomat attachment, these
What is digital planimeter
The planimeter is used for finding out areas of irregular figures on sheet there is a number of formulae available for calculating areas of regular figures, but the actual problem arises when the figure is irregular. Planimeter