A Study on the Improvement of Prediction Accuracy for Receive Signal Strength in Palau Tracking Station Through Analyzing Dynamic Link of KSLV-II

In this paper, a method for predicting more accurate and precise received signal strength and quality in tracking telemetry station were presented through analyzing Dynamic Link of KSLV-II. According to the recommended link budget method of telemetry standard document IRIG 119-06, 90% coverage antenna gain were applied to predict the receive signal strength. However, in the case of such this method, The level error is high, the fluctuation of the signal level, and the prediction of different polarized signal levels are impossible. The accuracy of receive signal strength was improved through Dynamic Link Analysis using antenna radiation pattern that change according to launch vehicle posture. By doing these, The received signal strength and quality prediction accuracy were improved comparing to the existing link budget, These results minimized prediction errors compared to the link budget method recommended in telemetry standard IRIG 119-06, and made it possible to predict dominant signals for each received polarized signal, and to predict changes in received signal strength for rapid launch vehicle posture.