Communications Research Centre Canada Ottawa, Ontario Canada
Experimental results of radio propagation measurements at 853 MHz are given for a 500 km troposcatter link in the Canadian High Arctic. Statistical analysis of path loss and fading measurements are presented. The experimental data were acquired using a narrowband measurement system that was developed to permit a transmitting power of only 100 Watts while using a 4.5 meter dish at each end of the link. The system includes a digital signal processor DSP receiver for signal strength computation and a high stability noise source reference for amplitude calibration. The main characteristics of this system are described in this paper. Detailed fading distributions are presented for examples of slow and fast fading periods and compared with Rayleigh distributions. An estimate of the long term median path loss is made and compared with values predicted using accepted techniques. The results are believed to be the first ever presented for a microwave troposcatter link above the 80th parallel.