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Which of the following Total Station Measured?
Horizontal Distance
Vertical Angle
Slope Distance
All of Above
All of Above
A Total Station is an integrated electronic instrument used in modern land surveying that combines an Electronic Distance Measurement (EDM) device with an electronic digital theodolite. It directly measures fundamental spatial variables including horizontal angles, vertical angles, and slope distances to determine target coordinates.
A Total Station is an integrated electronic instrument used in modern land surveying that combines an Electronic Distance Measurement (EDM) device with an electronic digital theodolite. It directly measures fundamental spatial variables including horizontal angles, vertical angles, and slope distances to determine target coordinates.
HD=SD├Чcos(╬╕) тАФ Horizontal distance derived from Slope Distance and Vertical Angle
VD=SD├Чsin(╬╕) тАФ Vertical height difference derived from Slope Distance and Vertical Angle
The instrument measures vertical and horizontal angles using micro-processor controlled optical encoders, while slope distance is determined using Phase Shift or Time-of-Flight EDM technology by emitting infrared or laser signals to a reflector prism. Using an internal microprocessor, it then calculates horizontal distance and vertical elevation difference using trigonometric relationships (HD=SD├Чcos╬╕ and VD=SD├Чsin╬╕).
Measures primary variables: Horizontal Angle, Vertical Angle, and Slope Distance.
Derives secondary variables: Horizontal Distance, Elevation Difference, and 3D Coordinates (X, Y, Z).
Integrates an electronic theodolite, EDM device, and microprocessor with onboard memory.
High accuracy and rapid data collection in 3D terrain surveying.
Automatic computation of horizontal distances and vertical elevations.
Seamless digital data transfer to GIS and CAD software, minimizing human transcription errors.
Higher initial cost compared to conventional optical theodolites.
Requires skilled operators and careful handling due to sensitive electronic optics.
Topographic and contour surveys for engineering project design.
Cadastral surveying for land property boundaries.
Construction layout, alignment staking, and structural monitoring.
Option A (Horizontal Distance) is automatically calculated onboard using SD├Чcos(╬╕).
Option B (Vertical Angle) is directly measured via micro-processor optical encoders.
Option C (Slope Distance) is directly measured using modulated infrared radiation or laser signals.
D is correct тАФ Total Station directly measures slope distance along with horizontal and vertical angles, and automatically computes horizontal distance.
In GATE and ESE exams, remember that while Slope Distance and Vertical Angle are directly measured parameters, Horizontal Distance is a computed parameter in Total Station operations.