Accession Number : AD0428803


Title :   DESIGN AND ANALYSIS OF AN INSTRUMENTATION SYSTEM FOR THE MEASUREMENT OF IONOSHPERIC CROSSMODULATION,


Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK IONOSPHERE RESEARCH LAB


Personal Author(s) : Suttmiller,R L


Report Date : 15 Feb 1964


Pagination or Media Count : 88


Abstract : In this report several methods for measuring amplitude interaction are considered; however, the basic concept as initiated by Fejer has been found the most suitable way of performing the measurement. The basic concepts as introduced by Fejer and the addition of some unique circuitry have been incorporated in the amplitude interaction instrumentation designed for this experiment. This instrumentation was successfully used to measure the interaction effect. The amplitude interaction system was evaluated in terms of the diurmal and seasonal variation of the signal-to-noise power ratio expected for a low sunspot period such as IQSY and high sunspot period. It has been predicted that the signalto noise power ratio can vary during the day from five to one hundred during IQSY and from .0l to 30 during a high sunspot period. It was shown that this system can be used to detect weak echoes such as partial reflections. (Author)


Descriptors :   *IONOSPHERE , *MODULATION , *INSTRUMENTATION , MODULATION , MEASUREMENT , CIRCUITS , SIGNAL TO NOISE RATIO , POWER , SUNSPOTS , REFLECTION , ELECTRON DENSITY , EARTH(PLANET) , PROPAGATION , EXPERIMENTAL DATA , RADIO WAVES


Distribution Statement : APPROVED FOR PUBLIC RELEASE