Method and system for indoor geolocation using an impulse response fingerprinting technique
US7630943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2006 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Nov 5, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/0273
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for predicting the location of a transmitter in an indoor zone of interest, including fixed receiver for receiving a signal from the transmitter, the receiver deriving a fingerprint from the received signal, and a trained neural network. The trained neural network predicts the transmitter location from the fingerprint. The method includes receiving a signal transmitted from the transmitter at a fixed-location receiver, deriving a fingerprint from the received signal, supplying the fingerprint to a trained neural network, and reading the predicted location from the neural network. The artificial neural network may further be trained and include a plurality of weights and biases is also shown. The method may include collecting a training data set of fingerprints and corresponding locations, inputting the training data set to the neural network, and adjusting the weights and biases by minimizing a sum of squares error function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.