Evaluation of the Feasibility of Consolidating Remote Electromagnetic Radiating Facilities

摘要

A critical component of the National Airspace System (NAS) modernization plan is the collocation and consolidation of facilities used by the air navigation and air traffic control services. A reduction in the number of separate facilities (including many remotely located sites) would represent a significant saving by reducing the number of support personnel and the associated annual support costs. However, the consolidation of such facilities would create a severe strong signal environment for the radio transmitters and receivers that must be collocated. This report recognizes many of the problems associated with collocation and site consolidation; it addresses the technical feasibility of collocating on a single site as many as 12 VHF and 12 UHF transmitters and receivers. The problem was approached both theoretically (a computer model was created to develop intermodulation products) and in practical terms. This report cites interference reduction techniques that could be employed to achieve satisfactory performance in a crowded strong signal environment.