The device 1, wherein {HEAD ~ a transmission time} and transmission location of the navigation signals are determined using {TAIL ~ the models} 
are determined using
The device 1 , wherein { HEAD ~ a transmission time } and transmission location of the navigation signals are determined using { TAIL ~ the models }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL