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Course detail
FAST-NEA032Acad. year: 2023/2024
Dynamics of satellite motion in a gravitational field - a two-body problem.Disturbed and undisturbed motion of satellites.Electromagnetic signal propagation in the atmosphere.Global navigation satellite systems with emphasis on GPS and their applications.Importance of ground support segment and error modelling for geodetic GNSS measurements.
Language of instruction
Number of ECTS credits
Mode of study
Guarantor
Department
Entry knowledge
Kinematics and dynamics of motion, Newton‘s laws of motion, Newton‘s gravitational law, law of refraction and reflection of the light, wave dispersion, methods of modulation of waves, field of dissipative forces, physical conditions in Earth‘s atmosphere.
Rules for evaluation and completion of the course
Students' knowledge is continuously verified in exercises by assigning independently solved problems.Knowledge at the end of the semester is verified by an exam. It has a written and an oral part. The condition for admission to the oral part is obtaining at least 50% of points in the written part.
Lectures are optional, attendance at excercises is compulsory.
Aims
Introducing students to space geodesy, especially global navigation satellite systems. Students will learn about the dynamics of the motion of a satellite in orbit around the Earth, the propagation of electromagnetic signals in the atmosphere and their processing for the purpose of determination of the receiver's position on the Earth.
The aim of the course is to deepen students' knowledge in the field of space geodesy, especially in the field of global navigation satellite systems.The student will:- understand the dynamics of satellite motion in orbit around the Earth,- know the principles of different types of satellite measurements,- have a detailed knowledge of the most important GNSS (GPS, Glonass, Galileo, BeiDou),- understand the principles of the various GNSS positioning methods- understand the importance of ground support systems for GNSS,- understand methods of modelling errors and minimising their impact on results,- be able to process GNSS measurements for geodetic purposes.
Study aids
Prerequisites and corequisites
Basic literature
Recommended reading
Classification of course in study plans
Lecture
Teacher / Lecturer
Syllabus
lecture schedule
1. Orthogonal coordinate systems and their mutual transformations, the most important coordinate systems used in space geodesy2. Chronometry - atomic times, Julian date3. Two-body problem, unperturbed motion of satellites4. Disturbed motion of satellites5. Orbits of satellites, optical and electronic observation methods6. Propagation of el-mag. signal in the atmosphere, GPS - space segment, navigation signals, navigation message7. GPS - ground and user segment, receivers, antenna phase centre, breakdown of measurement methods8. Ephemeris, GPS Time, absolute positioning9. DGPS, relative methods, creation of differences, linear combination of measurements10. Resolution of phase measurement ambiguities, relevant measurement methods11. permanent station networks, GLONASS, Galileo, Beidou12. GNSS - combination of satellite systems, PPP method
Exercise
Transformation of orthogonal coordinatesInterpolation of satellite ephemeridesGPS satellite positionPreprocessing of GNSS observationsCalculation of position from code measurementsProcessing of GNSS network data