In this case the row of sensors is perpendicular to the direction of satellite motion.
2.
If a " dark matter asteroid " is possible it would presumably make anomalies in satellite motion.
3.
Animation showing the relationship between TDOA and FDOA lines with respect to satellite motion over a 24-hour period.
4.
The change in long-wavelength components of Earth's gravity field also perturbs the orbital motion of satellites and has been detected by LAGEOS satellite motion.
5.
Geocentric Coordinate Time ( TCG ) is based on a reference frame comoving with the geocenter ( the center of the Earth ), and is defined in principle for use for calculations concerning phenomena on or in the region of the Earth, such as planetary rotation and satellite motions.
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