Remote Sensing : Definition, Classification, Methods

Remote Sensing Definition Remote sensing is broadly defined as science and information about objects, area of phenomenon from distance without being in physical contact with them. Remote Sensing is the process of obtaining information about an object, terrain or phenomenon through the analysis of data acquired by a sensor device without actual physical contact with … Read more Remote Sensing : Definition, Classification, Methods

Methods of Levelling Used in Surveying

Methods of Levelling :  The important methods of levelling used while surveying are as follows : Barometric Levelling. Trigonometric Levelling. Spirit Levelling. Differential Levelling. Reviprocal Levelling. Profile Levelling. Barometric Levelling : It makes use of the phenomenon that difference in elevations between two points is proportional to the difference atmospheric pressure at these points. Trigonometric … Read more Methods of Levelling Used in Surveying

Surveying : Introduction to the Concept of Surveying

Introduction to Surveying Surveying is the science and art of determining the relative positions of various points above, on or below the surface of the earth. The relative positions in surveying are determined by measuring horizontal distances, vertical distances (elevations}, horizontal angles and vertical angles accurately by using various surveying instruments. Important Objectives of Surveying … Read more Surveying : Introduction to the Concept of Surveying

What is Geographic Information System (GIS) ?

Concept of Geographic Information System In today’s modern world most of the decisions involving planning and development are based on consideration of the information available regarding location or geographic information. such information regarding location is usually referred to as Geographic Information System or GIS. Geographic Information System should include not only the data processing functions … Read more What is Geographic Information System (GIS) ?

Global Positioning System { GPS } in Surveying

Importance of Global Positioning System (GPS) in Civil Engineering Global Positioning System is a system developed by the US Department Of Defence (D.O.D) for military as well as Civil operations. The D.O.D sustains it. The Global Positioning System provides quickly, accurate and inexpensively to determine the time, position and velocity of any object on the … Read more Global Positioning System { GPS } in Surveying

Plane Table Surveying : Advantages & Disadvantages

Plane Table Surveying Plane Table Surveying is one of the most rapid method of surveying. The plane table is an instrument used for surveying by a graphical method in which the field work and plotting are done simultaneously. The main advantage of plane table surveying is that the topographic features to be mapped are in … Read more Plane Table Surveying : Advantages & Disadvantages