{TAIL ~ Systems} and methods for a navigation satellite of a satellite positioning supplementary system are provided in which a unit generates a navigation signal with a signal strength being dimensioned in {HEAD ~ such a way} that it is still possible to receive signals of other satellite navigation systems 
{ TAIL ~ Systems } and methods for a navigation satellite of a satellite positioning supplementary system are provided in which a unit generates a navigation signal with a signal strength being dimensioned in { HEAD ~ such a way } that it is still possible to receive signals of other satellite navigation systems
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