PREDICTION OF EQUIVALENT SYSTEM TEMPERATURE IN THE OUTDOOR ENVIRONMENT USING INDOOR MEASUREMENT

摘要

A computer simulation for prediction of equivalent system temperature is presented. The figure-of-merit for a receiving system is given by the ratio of the receiving system gain by the equivalent system temperature (G/T_s). While the gain, G, can be well characterized by laboratory measurements, measurements of system temperature, T_s, taken in the laboratory do not correspond well to measurements in the outdoors, due to a myriad of environmental factors. A computer methodology to statistically characterize the noise performance of a satellite earth station receiver in the operational environment was developed for the Department of Commerce National Institute for Standards and Technology, as part of a Small Business Innovation Research contract. The result of Phase 2 of the SBIR is an implementation of this computer methodology called the Receiving System Analysis Tool (RSAT). This paper describes the methodology, the RSAT simulation, and its application to SATCOM terminal analysis.