GSS292 | Fundamental of Satellite Positioning Quiz

What is the plane of the Earth's equator in the Celestial Reference Frame (CRF)?

• X-axis

• Y-axis

• xy-plane

• Z-axis

Which angle is measured in the plane of the equator between the planes of the hour circles passing through the vernal equinox and the body S?

• Argument of perigee

• Inclination

• Declination

• Right ascension

What are the six orbital elements that define the position of the orbit in space?

• Longitude, Latitude, Altitude, Time, Speed, Direction

• a, e, i, Ω, ω, tf

• x, y, z, α, δ, r

• Polar, Equatorial, Ecliptic, Galactic, Super Galactic, Universal

What is the Nodal line in the context of the position of the orbit in space?

• Line connecting the ascending and descending nodes

• Line connecting the equator and the poles

• Line connecting the equator and the ecliptic

• Line connecting the equator and the prime meridian

What is the Earth-Centred Earth-Fixed (ECEF) system also known as?

• International Celestial Reference System (ICRS)

• Earth-Centred Inertial (ECI) system

• Global Positioning System (GPS)

• Conventional Terrestrial System (CTS)

Which technique is the most accurate currently available to determine the geocentric position of an Earth satellite?

• Satellite Laser Ranging

• Doppler Orbitography and Radiopositioning Integrated by Satellite

• Global Navigation Satellite Systems

• Very Long Baseline Interferometry

What is the primary function of the Doppler Orbitography and Radiopositioning Integrated by Satellite system?

• Measure the time differences in the arrival of microwave signals

• Measure the temporal variations in the Earth's gravity field

• Measure the obliquity of the ecliptic

• Measure the round-trip travel times of light pulses

What is the main purpose of the Lunar Laser Ranging technique?

• Monitor the response of the atmosphere to seasonal variations

• Measure the round-trip travel times of light pulses

• Measure the time differences in the arrival of microwave signals

• Connect reference frames and determine earth's orientation

What is the accuracy range of the Real-Time Kinematic (RTK) GNSS survey technique?

• 3 - 5cm

• 2 - 5m

• mm - cm

• 1 - 5cm

Which surveying technique is based on the series of angles measurement of triangles?

• Satellite Surveying

• Triangulation Surveying

• Trilateration Surveying

• Precise Traversing