Земля Андерсен Лора

Жизнь с Луи — ВикипедияНазвание книги: Земля Андерсен Лора
Страниц: 210
Год: 2008
Жанр: Зарубежная

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О книге «Земля Андерсен Лора»

In this paper, an experimental wireless link from a mobile vehicle which transmits sensor data to a base station is measured and analyzed in terms of signal-to-noise ratio and packet loss.

These measurements confirm the usefulness of Lo Ra technology for wireless sensor systems in polar regions.

By deploying directional antennas at the base station, a range of up to 30 km is covered in case of Line-of-Sight radio propagation in both the 434 and 868 MHz bands.

Varying terrain elevation is shown to be the dominating factor influencing the propagation, sometimes causing the Line-of-Sight path to be obstructed.

Tropospheric radio propagation effects were not apparent in the measurements.

Snow accumulation on solar panels is also problematic.

Solutions that need maintenance more than once a year are not feasible due to the difficulty and cost related to visiting scientific setups in the Antarctic.

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