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using the maximum value in each measurement.3.2 Results from measurementse cumulative distribution function (CDF) of Beacon received power was calculated for three areas - Shikoku-Kinki, Kyushu, and West Japan along the coast of the Japan Sea. ese results are shown in Fig. 5 to Fig. 7. From these gures, variation of the Beacon signal power in a line of site environment is the range of about 2 dB. In non-line of site environments, the signal power attenuated by -18 to -20 dB, down to below the noise oor level. Note that the data obtained in the Kyushu area shows larger variation of about 5 dB in the line of site environment. e cause is due to heavy rainfall during the measurement. e sections plotted in dark blue in Fig. 2 to Fig. 4 indicate that the earth station failed to capture the satellite signal. Overall, the ratio of the sections with a line of site environment (i.e. direct capturing of the satellite) over the entire length covered by the experiment was about 70% in the Shikoku-Kinki area, and about 80% in Kyushu and at the coast of the Sea of Japan in West Japan. e main factors causing poor visibility include utility poles, road signposts, build-ings near the road, clis, tunnels, legs of railroad bridges, and trees along the road. Among them, tunnels were the most dominant factor. e experiment also proved the feasibility of satellite capturing while the earth station is on the move at high speed - 100 km/h on an expressway.Figure 8 shows the plot of received C/N0 (TDMA refer-ence burst signal of a regenerative relay circuit originally sent from the Kyushu beam of the MBA [multi-beam an-tenna]) against the distance from the beam center. Two points in this gure, Kanoya① and ②, were measured at the same location on dierent days: the dierence between FiF5　CDF of Beacon received power: Shikoku-Kinki areaBeacon received power [dB]CDFCDFFiF9　 Results of received C/N0 measurement: MBA Chubu beamDistance from beam center [km]Received C/N0[dB・Hz]MeasuredTheoreticalFiF6　CDF of Beacon received power: Kyushu areaBeacon received power [dB]CDFFiF7CDF of Beacon received power: West Japan along the coast of Sea of JapanBeacon received power [dB]CDFFiF8　Results of received C/N0 measurement: Kyushu beamDistance from beam center [km]C/N0[dB・Hz]IzumiKanoya①Kanoya②OitaKagoshima1613-11 A Measurement of Propagation in High Mobility Environments for Ka Band Satellite Communication