Safety-critical updating of maps via a data channel of a satellite navigation system
First Claim
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1. A control center update system for use with a satellite positioning system (SPS) including an SPS satellite transmitting SPS positioning data that includes navigation signals, the update system for updating a digital map used by a vehicle, said control center comprising:
- a transmitter for transmitting update data to the SPS satellite in a single channel,wherein a receiver of the vehicle simultaneously receives
1) the update data from the SPS satellite via an SPS satellite transmission sub-channel, and
2) the SPS positioning data that includes the navigation signals from the SPS satellite via an SPS satellite transmission main channel, the positioning data being generated by the SPS satellite, andwherein a processor of the vehicle updates the digital map on the basis of the received update data.
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Abstract
A device, system and method for an update system for updating a digital map for a vehicle. The update data is sent from a control center via a satellite navigation system to the individual receivers. The update data is received by the receivers in parallel with the position data from the satellites. For this purpose, a subchannel is provided. This allows large portions of the worldwide population to be supplied with the update data.
45 Citations
15 Claims
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1. A control center update system for use with a satellite positioning system (SPS) including an SPS satellite transmitting SPS positioning data that includes navigation signals, the update system for updating a digital map used by a vehicle, said control center comprising:
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a transmitter for transmitting update data to the SPS satellite in a single channel, wherein a receiver of the vehicle simultaneously receives
1) the update data from the SPS satellite via an SPS satellite transmission sub-channel, and
2) the SPS positioning data that includes the navigation signals from the SPS satellite via an SPS satellite transmission main channel, the positioning data being generated by the SPS satellite, andwherein a processor of the vehicle updates the digital map on the basis of the received update data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for use with a satellite positioning system (SPS) including an SPS satellite transmitting SPS positioning data that includes navigation signals, the method for updating a digital map for a vehicle, said method comprising the following steps:
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transmitting, from a transmitter of a control center to the SPS satellite, update data via a single SPS satellite data channel in a SPS satellite navigation system; simultaneously receiving, by a receiver in the vehicle,
1) the update data from the SPS satellite via an SPS satellite transmission sub-channel, and
2) the SPS positioning data that includes the navigation signals from the SPS satellite via an SPS satellite transmission main channel, the SPS positioning data being generated by the SPS satellite; andupdating, by a processor in the vehicle, the digital map on the basis of the received update data.
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15. A non-transitory computer-readable medium which stores a computer program product which, when executed on a processor, instructs the processor to perform the following steps:
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transmit, from a transmitter of a control center to a SPS satellite, update data via a single SPS satellite data channel in a SPS satellite navigation system; simultaneously receive, by a receiver in the vehicle,
1) the update data from the SPS satellite via an SPS satellite transmission sub-channel, and
2) SPS positioning data that includes navigation signals from the SPS satellite via an SPS satellite transmission main channel, the SPS positioning data being generated by the SPS satellite; andupdate, by a processor in the vehicle, a digital map on the basis of the received update data.
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Specification