Method and apparatus for detecting signal propagation type

An apparatus for detecting a type of signal propagation, the apparatus comprising:

• processor configured to calculate a plurality of similarity values when a location base station in an ultra-wideband location system currently receives a pulse response from a location tag, wherein each of the similarity values represents the degree of similarity between the currently received pulse response and one of a plurality of reference pulse responses, and the plurality of reference pulse responses are pulse responses from at least one location tag that were previously received by the location base station where the type of signal propagation between the location base station and the at least one location tag is a specific type of signal propagation;
• and
• the processor configured to determine, based on the plurality of similarity values, a current type of signal propagation between the location base station and the location tag.

A non-transitory, computer-readable storage medium having executable instructions thereon that, when executed by a computer, cause the computer to

• calculate a plurality of similarity values when a location base station in an ultra-wideband location system currently receives a pulse response from a location tag, wherein each of the similarity values represents the degree of similarity between the currently received pulse response and one of a plurality of reference pulse responses, and the plurality of reference pulse responses are pulse responses from at least one location tag that were previously received by the location base station where the type of signal propagation between the location base station and the at least one location tag is a specific type of signal propagation;
• and
• determine, based on the plurality of similarity values, a current type of signal propagation between the location base station and the location tag.