Development of a HF broadcast simulator for whole aircraft testing

Worldwide, high frequency (HF) broadcasts radiate very high intensity radiated fields in the airspace used by both civil and military aircraft. Testing of aircraft at the Naval Air Warfare Center Aircraft Division, Patuxent River, Maryland, USA, is performed to determine the compatibility with the external electromagnetic environment. The Office of Secretary of Defense (OSD) Central Test and Evaluation Investment Program (CTEIP) recognized the need for aircraft to be electromagnetically compatible with the HF broadcast electromagnetic environment (EME). CTEIP has supported the development of a new simulator that permits aircraft to be tested for compatibility with the EME produced by HF broadcasts. This paper describes the validation of these fields, the antenna development, transmitter capabilities and resulting whole radiated fields for aircraft testing