Patent ID: 8274396

Claim:
A local positioning system, comprising: at least one node configured to track a mobile tag, the at least one node configured to determine a plurality of sample values, each of the sample values indicative of a respective location of the tag relative to the at least one node and based on at least one signal communicated with the tag, the at least one node having a filter configured to combine the sample values via a filtering algorithm thereby providing an estimate indicative of a current location of the tag, the at least one node further configured associate each of the sample values with a respective one of a plurality of filter parameter values, the one filter parameter value indicative of a confidence in the associated sample value, wherein the filtering algorithm is based on the filter parameter values associated with the sample values, wherein for one of the sample values the at least one node is configured to perform a comparison between the one sample value and an estimate indicative of a previous location of the tag, and wherein the filter parameter value associated with the one sample is based on the comparison.