Vehicle localization based on wireless local area network nodes
First Claim
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1. A method to determine a current location of a vehicle comprising:
- in response to losing reception of GPS signals;
scanning for wireless network nodes via a wireless network controller;
when first locations of the wireless network nodes are stored in memory, determining, with a processor, the current location of the vehicle based on a particle filtering technique and received signal strength measurements from the wireless network nodes; and
when using the particle filtering technique, assigning weights to particles based on the first locations of the wireless network nodes and the received signal strength measurements from the wireless network nodes.
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Abstract
Method and apparatus are disclosed for vehicle localization based on wireless local area network nodes. An example disclosed vehicle includes a wireless network controller and a location tracker. In response to losing reception of GPS signals, the location tracker scans for wireless network nodes via the wireless network controller, and when second locations of the wireless network nodes are stored in memory, determines a current location of the vehicle based on a particle filtering technique and received signal strength measurements from the wireless network nodes.
29 Citations
14 Claims
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1. A method to determine a current location of a vehicle comprising:
in response to losing reception of GPS signals; scanning for wireless network nodes via a wireless network controller; when first locations of the wireless network nodes are stored in memory, determining, with a processor, the current location of the vehicle based on a particle filtering technique and received signal strength measurements from the wireless network nodes; and when using the particle filtering technique, assigning weights to particles based on the first locations of the wireless network nodes and the received signal strength measurements from the wireless network nodes. - View Dependent Claims (2, 3, 4, 5)
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6. A tangible computer readable medium comprising instructions that, when executed by a processor, cause a vehicle to:
in response to losing reception of GPS signals; scan for wireless network nodes via a wireless network controller; when first locations of the wireless network nodes are stored in memory, determine a current location of the vehicle based on a particle filtering technique and received signal strength measurements from the wireless network nodes; when the first locations of the wireless network nodes are not stored in the memory, determine the current location of the vehicle based on a simultaneous localization and mapping technique and the received signal strength measurements from the wireless network nodes; and when using the particle filtering technique, assign weights to particles based on the first locations of the wireless network nodes and the received signal strength measurements from the wireless network nodes. - View Dependent Claims (7, 8, 9)
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10. A vehicle comprising:
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a wireless network controller; and a processor configured to, in response to losing reception of GPS signals; scan for wireless network nodes via the wireless network controller; and when first locations of the wireless network nodes are stored in memory, determine a current location of the vehicle based on a particle filtering technique and received signal strength measurements from the wireless network nodes, wherein, the processor is further configured to, when using the particle filtering technique, weigh particles based on the first locations of the wireless network nodes and the received signal strength measurements from the wireless network nodes. - View Dependent Claims (11, 12, 13, 14)
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Specification