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You are here:Open notes-->Anna-University-->CE-2023-ELECTRONIC-SURVEYING

How to study this subject

OBJECTIVE
At the end of the course the student will posses knowledge about Electronic surveying
UNIT I FUNDAMENTALS 7
Methods of measuring distance, historical development, basic principles of EDM, classifications,
applications and comparison with conventional surveying.
UNIT II BASIC ELETRONICS 8
Fundamentals of electronics, resonant circuits, semiconductors, Lasers, Cathode ray tube,
photo multiplier tube, transducers, oscillators, frequency mixing, modulation and demodulation,
Kerrcell modulator, measurement of phase difference, reflectors and power sources.
UNIT III PROPAGATION OF ELECTROMAGNETIC WAVES 11
Definition, classification, applications, propagation properties, wave propagation at lower and
higher frequencies. Refractive index, factors affecting, computation of group refractive index for
light and near infrared waves at standard conditions and ambient conditions, reference
refractive index, first velocity correction, computation of refractive index for microwaves,
measurement of atmospheric parameters, mean refractive index, real time application of first
velocity correction, second velocity correction and total atmospheric correction.68
UNIT IV ELECTROMAGNETIC DISTANCE MEASURING SYSTEM 11
Electro-optical system, measuring principle, working principle, sources of error, infrared EDM
instruments, Laser EDM instruments and total station. Microwave system, measuring principle,
working principle, sources of error, microwave EDM instruments, comparison with Electrooptical
system, care and maintenance of EDM instruments, Modern Positioning Systems. EDM
traversing, trilateration and base line measurement using EDM.
UNIT V FIELD STUDIES 8
Study o different EDM instruments and Total Station. EDM traversing, trilateration and base line
measurement using EDM.
TOTAL: 45 PERIODS
REFERENCES:
1. Burnside, C.D. Electromagnetic distance measurement Crosby Lock wood staples, U.K.
1971.
2. Rueger, J.M. Electronic Distance Measurement, Springer-Verlag, Berlin, 1990.
3. Laurila, S.H. Electronic Surveying in Practice, John Wiley and Sons Inc, 1983.
4. Soastamoinen, J.J. Surveyor’s guide to electro-magnetic Distance Measurement, Adam
Hilger Ltd., 1967.