How are the ephemeris data broadcast in GLONASS?(a) ECEF coordinates(b) ECI coordinates(c) Directional cosines(d) Geodetic spherical coordinatesThe question was posed to me in my homework.My question is from Global Orbiting Navigational Satellite System in portion Satellite Radio Navigation& Inertial Navigation of Avionics

How are the ephemeris data broadcast in GLONASS?(a) ECEF coordinates(b

1.	How are the ephemeris data broadcast in GLONASS?(a) ECEF coordinates(b) ECI coordinates(c) Directional cosines(d) Geodetic spherical coordinatesThe question was posed to me in my homework.My question is from Global Orbiting Navigational Satellite System in portion Satellite Radio Navigation& Inertial Navigation of Avionics
Answer» The correct choice is (a) ECEF COORDINATES For explanation: The GLONASS ephemeris DATA are BROADCAST as ECEF or Earth Center Earth Fixed coordinate system cartesian coordinates in position and VELOCITY with lunar and solar acceleration perturbations parameters that are VALID about 0.5 hour.

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