发明名称 |
Positioning system |
摘要 |
There is disclosed a method of managing a database of positioning data, the positioning data including electromagnetic signal source data for use by a positioning system, and the method comprising: receiving signal data relating to signals received from a plurality of electromagnetic signal sources; associating an appropriate one of a plurality of zone identifiers with each of the electromagnetic signal sources, each zone identifier being associated with a respective geographical zone; selecting a subset of the plurality of electromagnetic signal sources in dependence on their associated zone identifiers; processing the signal data relating to the subset of the plurality of electromagnetic signal sources to compute position estimates of the electromagnetic signal sources; and updating the database of electromagnetic signal source data in dependence on the computed position estimates. |
申请公布号 |
US9639557(B2) |
申请公布日期 |
2017.05.02 |
申请号 |
US201314373097 |
申请日期 |
2013.01.18 |
申请人 |
SENSEWHERE LIMITED |
发明人 |
Arslan Tughrul Sati;Sevak Zankar Upendrakumar;Alsehly Firas |
分类号 |
G06F17/30;G01S5/02;H04W64/00 |
主分类号 |
G06F17/30 |
代理机构 |
Nixon & Vanderhye PC |
代理人 |
Nixon & Vanderhye PC |
主权项 |
1. A method of managing a database of positioning data, the positioning data including electromagnetic signal source data for use by a positioning system, and the method comprising:
receiving signal data relating to signals received by user devices from a plurality of electromagnetic signal sources; associating each of the electromagnetic signal sources with an appropriate geographical region selected from a plurality of geographical regions; selecting a subset of the plurality of electromagnetic signal sources in dependence on their associated geographical regions; processing the signal data relating to the subset of the plurality of electromagnetic signal sources to compute position estimates of the electromagnetic signal sources; and updating the database of electromagnetic signal source data in dependence on the computed position estimates, wherein each electromagnetic signal source has a zone code assigned to it, a first zone code being associated with a subset of signal sources having substantially the highest level of accuracy of position estimation, a second zone code being associated with zones of signal sources whose position estimates depend on position estimates associated with a zone of the first zone code. |
地址 |
Edinburgh GB |