1. A method for dynamically adjusting spectral data collected from one or more containers for spectral analysis of collected spectral data and for detecting and identifying radioactive materials within the one or more containers, the method comprising: providing a background radiation data set comprising a plurality of background radiation data corresponding to a plurality of different background environments about a container; collecting, by a plurality of radiation sensors, at least one spectral data set representing radiation data associated with the container and its contents, the container being located in proximity to the plurality of radiation sensors; and dynamically adjusting the collected at least one spectral data set according to at least one of the plurality of background radiation data based on a determined background environment of the plurality of different background environments about the container.