Radio Navigationeasy#1138
GPS determines position by measuring:
A
Doppler frequency shift from satellites
B
Signal strength from satellites
C
Pseudo-range (time delay) from at least 4 satellites
CorrectD
Phase difference between satellite signals
Explanation
GPS receivers calculate position by measuring pseudo-ranges (based on signal travel time) from at least 4 satellites to solve for x, y, z position and clock error.
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