Process and apparatus for the measurement of time related to the messages of satellite data for use with a satellite positioning system, receiver of satellite positioning system (SPS).And, the system of a receiver.

摘要

"Process and apparatus for measuring the time related messages from satellite data for use with a satellite positioning system.The receiver of satellite positioning system (SPS), and system of a receiver.A process and apparatus for the measurement of time related to the satellite data messages which are used with satellite positioning system (SPS).In a process, a first recording of at least a portion of a data message is received at a satellite entity, which is typically a base station.The first recording is compared with a second recording of the message of satellite data. mu, MV, characterized by the fact that the first tape and the second tape is at least partially in time.Then a time is determined from this comparison.And this time indicates when the first record (or the source from which the first recording was obtained) was received at a remote entity which is typically a mobile SPS receiver.Several other processes of the invention are described and various apparatuses of the invention are also described.The processes and apparatus measure time of day using SPS signals without reading messages from satellite data that are transmistidos as data within those signals.Processes and apparatus are suitable for situations in which the level of the received signal is too weak to allow reading of the data messages from the satellite.