Triangulation & GIS, GPS, Remote Sensing
Triangulation, Classification of Triangulation– Primary / 1st order Triangulation, Secondary/ 2nd order Triangulation, Tertiary/ 3rd order Triangulation. Accuracy of Triangulation Networks, Objective Of Triangulation, Triangulation Layout – Single Chain of Triangulation, Double Chain of Triangulation, Braced Quadrilaterals, Centered Triangle & Polygon. System Of Framework – Grid Iron System, Central System. Well Condition Triangle (***), Trilateration.
Geographic Information System (GIS)-Geographic, Information system, Uses of GIS, Components of GIS- Hardware, Software’s, Data, People, Methods. Global Positioning System (GPS), Different GPS systems available are, Comparison of Global Navigation Satellite Systems of the World. Remote Sensing, Principles of Remote Sensing, Remote Sensing Sensor Systems, Type of Remote Sensing Sensor Systems– Active System, Passive System.
Topics
Compass is a survey instrument used for the measurement of horizontal angles and the bearing of a line of sight.Surveyor Compass and Prismatic Compass are discussed in detailed.
Levelling (Correction in Levelling, Distance of Visible Horizon, Reciprocal Leveling, ETC)
In levelling, we are details discuss about elevation & altitude, reduced level, mean sea level, bench marks(B.M), horizontal line, vertical line, level line, back sight reading, fore sight reading, intermediate sight reading, method to find reduced level, height of instrument, rise and fall method, inverted staff, correction required in levelling work, distance of visible horizon, reciprocal leveling, collimation error, angular / inclination error, sensitivity of bubble tube, the sensitivity of level tube increases with?.