摘要:
The invention comprises a process for a own global navigation satellite system and at least one other global navigation satellite system comprising the steps Receive ranging signals and navigation messages or ranging signals only from the at least one other global navigation satellite system; Process the received ranging signals and navigation messages in a similar way like the ranging signals and navigation messages of the own global navigation satellite system.
摘要:
The invention relates to a method for computing robust and improved Signal-in-Space Accuracy parameters in a Regional or Global Navigation Satellite System comprising at least one the following acts of: determining individual Signal-in-Space Error vectors (S10); mapping the individual Signal-in-Space Error vectors to a service area (S12); accumulating empirical sample sets (S14); processing density functions of estimations of accumulated sample sets (S16); individually overbounding the density functions in the Galileo overbounding sense or in the sense of paired overbounding with excess mass (S18); and selecting a worst case according to predefined requirements (S20).
摘要:
The invention contains an apparatus for a regional or global navigation satellite system comprising: means for receiving additional data or navigation messages from the navigation satellite system; and means for informing or alarming the user that critical atmospheric conditions occur, where the additional data or the navigation messages comprise atmospheric information.
摘要:
The invention relates to device (10) for orbit prediction of satellites comprising - an accelerometer (12) being provided and adapted for measuring non-gravity forces acting on a satellite (14), and - processing means (16) being adapted -- to receive measured non-gravity forces from the accelerometer (12), to estimate the contributions of the measured non-gravity forces to the movement of the satellite (14), and -- to predict the orbit (18) of the satellite (14) based on the estimated contributions of the non-gravity forces to the movement of the satellite (14).