| 摘要 |
<p>There is provided a method of identifying the presence of an emission signature. The method comprises: forming a first model of the ambient electromagnetic spectrum by adapting coefficients of an adaptive filter so that the impulse response of the adaptive filter resembles the ambient electromagnetic spectrum as closely as possible; and comparing the first model of the ambient electromagnetic spectrum to a second model of the ambient electromagnetic spectrum that was formed when the ambient electromagnetic spectrum was known to contain the emission signature. The deployment of a change point algorithm in comparing the first and second models may be used to quickly identify such emissions. The deployment of devices using the method allows the location of signals to be geo-located. The invention is primarily used for detecting specific emitters, such as those worn by personnel operating in avalanche or earthquake zones, that produce signals that are known.</p> |
