Tactically signficant objects (TSMOs) such as ships generate EM emissions from various key systems, in particular their engines. This EM wake is used to detect TSMOs at considerable distances.
The electromagnetic (EM) spectrum is divided into frequency ranges (or bands) based on the predominant manifestation of each range, with each band typically indicating a different source. Infrared radiation, for example, is a key output of impulse
The EMDAR Contact Board module allows management of EMDAR contacts. A contact is an untracked EM emissions pattern thought to indicate a Tactically Significant Maneuvering Object (TSMO).