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Empirical results for the mid-latitude and low-latitude regions measured using a commercially available, portable, handheld Global Positioning System (GPS) receiver with built-in, small-size antenna a...re presented. The aim is to imitate the actual mobile satellite (MS) receiver performance in the low-latitude region due to the ionospheric layer. The effect of the ionosphere on the MS received signal is indicated by the signal fluctuations exceeding ± 5dB from the averaged measured SNR.続きを見る
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