Method for determining the phase of information, and an electronic device

Abstract

The invention relates to a method for determining the phase of information modulated in a code-modulated signal transmitted by a satellite in a receiver (MS). In the method, at least partly the same information is transmitted from at least a first and a second satellite (SV -SV ) substantially simultaneously, the code-modulated signal transmitted from at least the first and the second satellite (SV -SV ) is received, and at least the received signal of the first satellite is demodulated to determine the transmitted information. The method further comprises at least a first acquisition step, in which the receiver is synchronized with the signal of at least the first satellite (SV ); a determination step, in which said demodulated signal of the first satellite (SV ) is used to determine the phase of information modulated in the signal; a computing step to compute the difference in propagation time of the signal transmitted by said first satellite (SV ) and the signal transmitted by the second satellite (SV ) from the satellite (SV , SV ) to the receiver (MS); a second acquisition step, in which the receiver is synchronized with the signal of the second satellite on the basis of the difference in propagation time computed in the computing step; and an integration step to receive the signal of the second satellite and to integrate epochs of a certain length to improve the demodulatability of the signal.