Radio-wave profiling of the earth's atmosphere from the surface
Nine AP-S members have been e l ec t ed to the grade of  Fellow i n the IEEE, e f e c t i v e 1  January  1982. The grade of Fellow i s one of unusual professional dis t inct ion conferred only by inv i t a t ion o f the Board of Directors upon a person of outstanding and ex t raord inary qua l i f ica t ions and experience i n IEEE designated f ie lds , who has made important contributions to one o r more of t h e s e f i e l d s . The nine AP-S members are: