One of the main requirements of the High Frequency data users the world over is the prediction of Maximum Usable Frequency (MUF)/Optimum Traffic Frequency (FOT) for various single and multi-hop circuits. For every circuit there is a maximum radio frequency above which the signal will penetrate the ionosphere and be lost to space. One of the tasks of SUPARCO is to predict MUF/FOT (which is 85% of MUF) for nearly 216 national and international circuits, 2 months in advance, for various Defense/Civil establishments in the country. For the prediction of MUF, various characteristics i.e. stations’ separation, latitude, longitude, the time of day, season, sunspot numbers and CCIR coefficients for low and high solar activity are taken into account. |
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