Generation of a data stream with user messages in a satellite-based augmentation system

摘要

The method involves forming (S10) predetermined unique sequences of message types. Each of predetermined unique sequences is allocated to data sources that are used for generating user messages in satellite-based augmentation system. The data sources used for generating data stream is selected (S12). The data stream comprising user messages is generated (S14) by the selected data source using predetermined unique sequence of message types allocated to selected data source. Independent claims are included for the following: (1) computer program for generating data stream comprising user messages; (2) data carrier; (3) device for generating data stream comprising user message; and (4) receiver.