AN OBSERVATION METHOD OF ELECTROMAGNETIC ENVIRONMENT IN VHF/UHF BAND BY USING A SPECTRUM ANALYZER SYSTEM

摘要

It is well known that data of electro-magnetic environments give the base for radio ommunication.It is needed and expected that the spectrum usage over wide frequency range is well recognized and that the rf-noise interference with the spectrum is well measured.Authors have studied the method to realize them and the system is prepared to observe the spectrum usage and spectrum pollution over wide range.As the measurement system,a spectrum analyzer controlled by personal computer was used.By modifying the display method for the measured data,the spectrum usage and pollution could be recognized at a glance.