prov:value
| - An aircraft 28, or any platform such as a ship, satellite, land vehicle, or fixed station, having direction finding equipment (DFE), typically, but not necessarily, of the type associated with an electronic support measures(ESM) system, which DFE can receive electromagnetic energy, is located at a distance R3 from an active object, such as a scanning search radar 30 as shown in FIG. 3.
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