Robert Boschgmbh

Robert Bosch Gmbh

Markus Langer

Marco Limberger

Jens Strobel

Kosmas Knoedler

Thomas Speth

The disclosure concerns a method for GNSS-based location of a vehicle having a GNSS location device in view of integrity information provided in relation to GNSS correction data, comprising at least the following steps: (a) receiving GNSS correction data for correcting delay measurements for GNSS-based location from a GNSS correction data provision system, (b) receiving at least one piece of integrity information about the reliability of the GNSS correction data from the GNSS correction data provision system, (c) evaluating the at least one piece of integrity information about the reliability of the GNSS correction data that was received in step (b), and (d) influencing GNSS-based location of the vehicle on the basis of the evaluation from step (c).

Method for GNSS-based location of a vehicle having a GNSS location device in view of integrity information provided in relation to GNSS correction data

A method for determining a four-dimensional ionosphere model of an electron distribution in the Earth's atmosphere is disclosed, which is used to correct runtime measurements of signals emitted by satellites, for position determinations by means of signal receivers. The method comprises: a) defining at least one distribution function based on at least one function parameter which is suitable to describe a distribution of electrons over the height of the Earth's atmosphere; b) receiving data from a plurality of runtime measurements by means of a plurality of movable dual-frequency signal receivers, in order to determine parameters that are representative for a total quantity of electrons along a signal transmission path from a satellite to a dual-frequency signal receiver; c) determining location-dependent and time-dependent function parameters for the distribution function at least by means of the parameters; and d) providing the function parameters determined in step c) as a four-dimensional ionosphere model.

Method for determining an electron density distribution in the earth's atmosphere

A method for providing correction data for satellite navigation, includes determining the correction data using a plurality of state signals relating to the Earth's ionosphere, each of the state signals associated with one of a plurality of signals which have been received by an interface for a plurality of mobile satellite receivers, the plurality of mobile satellite receivers provided for satellite navigation. Each of the plurality of state signals identify a geographical position of an associated one of the plurality of mobile satellite receivers and an item of state information relating to the Earth's ionosphere which is determined using at least one satellite signal transmitted between at least one satellite and the associated one of the plurality of mobile satellite receivers. The correction data is transmitted to the at least one satellite and then transmitted from the at least one satellite.

Method and apparatus for providing correction data for satellite navigation

A method for monitoring an integrity of reference stations, having known and fixed coordinates, of a correction service system for a satellite-supported navigation system. A first group of the reference stations is operated to receive satellite signals of a plurality of satellites of the satellite-supported navigation system. It is provided that a) a first reference station is selected from the first group, and b) at least one first correction value is ascertained as a function of the satellite signals respectively received by the remaining reference stations of the first group, and c) the monitoring of the integrity is carried out in that first coordinates of the first reference station, determined using the satellite signals received by the first reference station and using the at least one first correction value, are compared with the known coordinates of the first reference station and checked for at least one first deviation.

Method for monitoring an integrity of reference stations of a correction service system, correction service system, method for operating a satellite-assisted navigation system and satellite-assisted navigation system

The disclosure relates to a method for checking ionospheric correction parameters for satellite navigation for a vehicle. The method has a step of reading a provider signal from an interface with a correction data provider. The provider signal represents ionospheric correction parameters for correcting ionospheric influences for a geographic position in satellite navigation. The method also has a step of determining correction data using information relating to the state of the ionosphere between a satellite receiver of the vehicle at the geographic position and at least one satellite. The state information is defined using at least one satellite signal transmitted between the at least one satellite and the satellite receiver. The method also has a step of performing a comparison between the ionospheric correction parameters and the correction data in order to check the ionospheric correction parameters.

Method and apparatus for checking ionospheric correction parameters for satellite navigation for a vehicle

A method for operating a correction service system (CSS), for a satellite navigation system (SNS), having reference-stations (RS) (in a coordinate-system (CS)) having known/fixed coordinates, the RS being operated to receive satellite signals, at least one correction-value (CV) being predefined as a function of the signals received by the selected RS and its coordinates, and is provided to user-devices of the SNS, the at least one CV being checked for plausibility. The CSS divides the CS into multiple-regions, in which user-devices determine an individual position as a function of the plausibility of the received CV, at least one specific-region being selected as a function of the plausibility of the CV, the specific-region(s) being assigned the at least one CV, at least one information-packet being generated, which contains indications about the plausibility of the CV and the specific-region(s), the information-packet(s) being provided to at least one selected group of user-devices.

Method for operating a correction service system and correction service system

A method for determining a model of an electron distribution in the Earth's atmosphere in order to correct time-of-flight measurements of signals that are transmitted by earth satellites for position determinations with signal receivers includes determining local electron density data of provision sites and determining a local resolution accuracy as a function of the electron density data of the provision sites. The method further includes determining functions for interpolation of a distribution of the determined electron density data of the provision sites as a function of the determined resolution accuracy and compiling the model of the electron density distribution with the determined electron density data of the provision sites and the determined functions for interpolation.

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Asperg, Germany

Markus Langer