Frequency Standards for Radar Transponders.

摘要

The frequency standards given here were derived by the Frequency Coordination Working Group of the Inter-Range Instrumentation Group, with the assistance of members of the Electronic Trajectory Measurements Working Group and development groups of the three Military Services and aircraft industries. The purpose of these parameters is to provide development and coordination agencies with design specifications on which to base equipment development and modification in an effort to ensure interference-free operation for all concerned and efficient utilization of the radio-frequency spectrum. It has long been recognized that the frequency spectrum is a limited entity, a resource that must be conserved. It has been further recognized that frequency utilization is a system problem; the transmitter-receiver link must be considered as a system. Efficiency of spectrum utilization should be a goal; susceptibility to interference should be minimized. The wasteful use of the spectrum by any system using electromagnetic radiation and reception can have far-reaching effects in many phases of military and civil activities. It is firmly believed that, unless the basic philosophy of spectrum conservation is recognized and applied by all agencies in the electronics field (designers, manufacturers, testers, and users), serious consequences are inevitable.