Direction?Finding on Diffuse Sources of Electromagnetic Radiation

Abstract

It is shown that, for sources of large angular size, the response of an Adcock type direction·finder is independent of the extent of the source in altitude. On the other hand, the response of a rotating loop does depend on altitude. By combining the characteristics of both types of direction-finder, the position and size of an extended source can be found, provided that a brightness profile can be assumed.