Method and apparatus for providing correction data for satellite navigation

Patent metadata

Field	Value
Publication number	US-11460583-B2
Application number	US-201816647201-A
Country	US
Kind code	B2
Filing date	Sep 19, 2018
Priority date	Sep 26, 2017
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

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.

First claim

The invention claimed is:

1. A method for providing correction data for satellite navigation, the method comprising:
receiving at least one first satellite signal from at least one satellite with an associated plurality of mobile satellite receivers;
receiving a plurality of state signals from the associated plurality of mobile satellite receivers with an interface configured to communicate with the plurality of mobile satellite receivers, each of the plurality of state signals corresponding to one of the associated plurality of mobile satellite receivers, each of the plurality of state signals identifying a geographical position of the corresponding mobile satellite receiver and an item of state information relating to the Earth's ionosphere which is determined using the at least one first satellite signal;
receiving, with a processor, the plurality of state signals from the interface;
determining, with the processor, the correction data using the plurality of state signals; and
transmitting, with the processor, the correction data to the at least one satellite.

2. The method as claimed in claim 1 , wherein determining the correction data further comprises:
determining the correction data using at least one of an ionosphere correction model and a modeling algorithm, based on the plurality of state signals and a plurality of reference state signals,
wherein the plurality of reference state signals are associated with signals received from at least one stationary reference satellite receiver.

3. The method as claimed in claim 1 , wherein the associated plurality of mobile satellite receivers includes a plurality of vehicle-mounted satellite receivers.

4. The method as claimed in claim 1 , comprising:
using the correction data to correct a transmission of at least one second satellite signal between the at least one satellite and at least one of the associated plurality of mobile satellite receivers.

5. The method as claimed in claim 1 , wherein:
the item of state information of each of the plurality of state signals is associated with a total electron content as a characteristic parameter of the Earth's ionosphere; and
the total electron content is defined as a product of the electron density and distance, measured in electrons per square meter.

6. The method as claimed in claim 1 , further comprising
determining the item of state information of each of the plurality of state signals based on a respective comparison of at least one signal property in relation to at least two transmission frequencies of the at least one satellite signal.

7. The method as claimed in claim 1 , wherein the processor is a backend server configured to communicate with the interface.

8. The method as claimed in claim 1 , wherein the transmitting the correction data further comprises:
transmitting the correction data to the at least one satellite by way of a ground station configured to communicate with the at least one satellite.

9. The method as claimed in claim 1 , further comprising:
transmitting the correction data to the associated plurality of mobile satellite receivers via the interface.

10. A system for providing correction data for satellite navigation, comprising:
at least one satellite;
a plurality of mobile satellite receivers configured for satellite navigation using at least one first signal from the at least one satellite, the at least one first signal including the correction data;
an interface configured to communicate with the plurality of mobile satellite receivers;
a machine readable storage unit including program instructions stored therein; and
a microprocessor operably connected to the machine readable storage unit and configured to execute the program instructions to
determine 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 second signals which have been received by the interface, each of the plurality of state signals identifying 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 a plurality of third signals transmitted from the at least one satellite to an associated one of the plurality of mobile satellite receivers, and
transmit the correction data to the at least one satellite.

11. The system as claimed in claim 10 , wherein the microprocessor is further configured to execute the program instructions to:
determine the correction data using a plurality of reference state signals by using at least one of an ionosphere correction model and a modeling algorithm, wherein the plurality of reference state signals are associated with signals received from stationary reference satellite receivers.

12. The system as claimed in claim 11 , wherein the microprocessor is further configured to execute the program instructions to:
determine the correction data using a plurality of reference state signals by using the ionosphere correction model and the modeling algorithm.

13. The system as claimed in claim 10 , wherein:
the plurality of mobile satellite receivers are configured to receive the plurality of state signals from the interface.

14. The system as claimed in claim 13 , wherein the plurality of mobile satellite receivers are a plurality of vehicle-mounted satellite receivers.

15. The system of claim 10 , wherein:
the state information is associated with a total electron content as a characteristic parameter of the Earth's ionosphere; and
the total electron content is defined as a product of the electron density and distance, measured in electrons per square meter.

16. The system as claimed in claim 10 , wherein the microprocessor is further configured to execute the program instructions to
determine the state information using a signal change of a first of the plurality of third satellite signal, wherein the signal change represents a result of a comparison of at least one signal property in relation to at least two transmission frequencies of the first of the plurality of third satellite signal.

17. The method as claimed in claim 2 , wherein determining the correction data further comprises:
determining the correction data using both the ionosphere correction model and the modeling algorithm.

18. The system as claimed in claim 10 , wherein the microprocessor is further configured to execute the program instructions to:
transmit the correction data to the at least one satellite by way of a ground station configured to communicate with the at least one satellite.

19. The system as claimed in claim 10 , wherein the microprocessor is further configured to execute the program instructions to:
transmit the correction data to the plurality of mobile satellite receivers via the interface.

Assignees

• Bosch Gmbh Robert

Inventors

• Limberger Marco
• Langer Markus

Classifications

• G01S19/41 Primary

  Differential correction, e.g. DGPS [differential GPS] · CPC title

• G01S19/072 Primary

  Ionosphere corrections · CPC title