Abstract: A system and method of resolving a time ambiguity in a receiver based on a received radio signal. The radio signal includes a first signal component and a second signal component. The first and second signal components include code symbols having durations of time The system and method include acquiring each of the signal components, and performing code symbol synchronization and/or code synchronization for each of the codes. The system and method further include estimating a code phase offset between the synchronized codes, or a code-symbol phase offset between the synchronized code symbols. Finally, the system and method include resolving the time ambiguity of the receiver within a time period based on the time-dependent code phase offset or the time-dependent code-symbol phase offset.

Abstract: The invention concerns a method of resolving a time ambiguity in a receiver based on a received radio signal. The radio signal comprises a first signal component and a second signal component. The first signal component comprises a first code of X1 code symbols, the first code having a duration of C1 units of time, wherein each of the code symbols has a duration of St units of time. Likewise, the second signal component comprises a second code of X2 code symbols, the second code having a duration of C2 units of time, wherein each of the code symbols has a duration of S2 units of time. Either, the code duration C1 of the first signal component and the code duration C2 of the second signal component are chosen such that the start or the end of the first code and the second code have a reference code phase offset of D units of time every 2 N units of time, wherein 2N is equivalent to the least common multiple of C1 and C2.

Abstract: A receiver is provided for use with a global navigation satellite system (GNSS) comprising multiple satellites. The receiver comprises a receiver clock and at least one antenna for receiving multiple signals over multiple respective channels, each channel being defined by a transmitting satellite and a receiving antenna at opposing ends of the channel. The receiver further comprises at least one correlator for calculating cross-correlation functions between (i) the signals received over the multiple channels and (ii) reference versions of the navigation signals provided by the receiver. The receiver is configured to use the calculated cross-correlation functions to perform a joint estimate of (i) a clock bias of the receiver clock relative to the time reference maintained by the GNSS, and (ii) a composite channel comprising the combined contribution of the multiple channels as a function of time-delay.