| 摘要 |
A method and apparatus are provided for on-device positioning using compressed fingerprint archives. The method and apparatus may be configured to provide compression of localization fingerprints, to facilitate efficient on-device positioning based on the RF fingerprint model, and to estimate the physical distance between two or more devices. Embodiments of the method may receive a space-to-access point histogram that corresponds to an access point as observed in a space. The histogram may be normalized and a mean and standard deviation may be calculated from the histogram. A weight may be assigned to the access point corresponding to the frequency with which the access point is observed within the space. A mean, standard deviation, and weight may be calculated and assigned for each of a plurality of access points as observed within a space. The mean, standard deviation, and weight of each access point may be combined to form a data triple. The data triples may be combined to form a fingerprint of access points observed from that space. The data triple or plurality of data triples with the lowest assigned weight(s) may be removed from the fingerprint. |
