ce6404 anna university unit iii total station surveying

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UNIT III UNIT III TOTAL STATION TOTAL STATION SURVEYING SURVEYING

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Page 1: CE6404 ANNA UNIVERSITY Unit iii total station surveying

UNIT III UNIT III

TOTAL STATION TOTAL STATION SURVEYINGSURVEYING

Page 2: CE6404 ANNA UNIVERSITY Unit iii total station surveying

EMR SpectrumEMR Spectrum

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Total StationTotal Station

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ReflectorsReflectors

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Working PrincipleWorking Principle

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MethodsMethods

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MethodsMethods

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Principle of Angle Principle of Angle MeasurementMeasurement

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Principle of Angle Principle of Angle MeasurementMeasurement

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ClassificationClassification

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ClassificationClassification

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ClassificationClassification

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Errors in Total StationErrors in Total Station

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Comparison of Electro-Comparison of Electro-optical and electronic optical and electronic systemsystemElectro-optical system:Electro-optical system:

Infrared and Laser is used up to 5km.Infrared and Laser is used up to 5km.

Laser is suitable for 100m to 350m reflector less Laser is suitable for 100m to 350m reflector less operations.operations.

Affected by fog, rain, mist and dust.Affected by fog, rain, mist and dust.

Electronic System:Electronic System:

Medium range Microwave system is used for Medium range Microwave system is used for 25km. (not affected by fog, rain, mist and dust).25km. (not affected by fog, rain, mist and dust).

Long range radio wave is used for 100 km Long range radio wave is used for 100 km observation (Hydrographic surveying).observation (Hydrographic surveying).

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Errors – Electro optical Errors – Electro optical instrumentsinstruments Refractive IndexRefractive Index Basic Modulation FrequencyBasic Modulation Frequency Phase MeasurementsPhase Measurements Zero and Non Linearity CorrectionsZero and Non Linearity Corrections CenteringCentering

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Errors - Electronic SystemErrors - Electronic System Ground Swing or Ground ReflectionGround Swing or Ground Reflection Zero and Nonlinearity correctionZero and Nonlinearity correction All the other corrections are similar to Electro All the other corrections are similar to Electro

optical systemoptical system

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Errors in PositioningErrors in Positioning Adjusted by Least SquaresAdjusted by Least Squares Standard Deviation of Coordinates are used for Standard Deviation of Coordinates are used for

two lines.two lines.

Corrections in Total Corrections in Total Station SurveyingStation Surveying Environmental CorrectionsEnvironmental Corrections Geometric ReductionsGeometric Reductions

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TrilaterationTrilateration

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TraversingTraversing

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THANK YOU