FIELD STRENGTH MEASUREMENTS, PHASE I.
CENTRAL RADIO PROPAGATION LAB NATIONAL BUREAU OF STANDARDS BOULDER COLO
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The program included the testing and evaluation of commercial and military field-strength meters. It also included a study of the interpretation of field-strength measurement data taken under multipath conditions. As part of the field-strength meter evaluation, five instruments, the ANTRM-7, NF-105, NF-112, FIM-B2, and the NM-30A were laboratory tested and the results have been previously reported. One of the difficulties in the interpretation of the measured data is the variability of field-strength values obtained over an area. Such variability is caused by the presence of multipath components. The principle of aperture-synthesis has been applied to this problem by Watterson. Using field-strength values measured over an area, the contributions of the individual components to the field can be identified. A computer program was prepared to make the necessary computations. The principle was verified first by simulated field data and then experimentally. The results of the program verify the usefulness of the asperture-synthesis technique for the measurement of multi-component fields. Author