maritime satellite phones and iridium phones
Maritime satellite phones and Iridium satellite phones are two different satellite communication systems. Their differences mainly include the following aspects:
Satellite composition: Maritime satellite phones use geosynchronous orbit satellites with an altitude of about 36,000 kilometers, covering most areas except the North and South Pole; Iridium satellite phones use low-orbit satellites with an altitude of about 765 kilometers, covering all areas of the world, including North and South Pole
Communication stability: The communication of maritime satellite phones is relatively stable, but it is greatly affected by terrain and weather, and it needs to be aligned with the direction of the satellite to communicate; the communication of Iridium satellite phones is not stable, the signal strength fluctuates seriously, and it is easy to drop the call, but it does not You need to aim at the direction of the satellite. As long as there is a satellite flying overhead, you can make a call.
Communication delay: The communication delay of the maritime satellite phone is larger, about 0.5 seconds, because the satellite is farther from the earth; the communication delay of the iridium satellite phone is smaller, about 0.1 seconds, because the satellite is closer to the earth
Communication cost: The communication cost of maritime satellite phone is relatively cheap, about 10 RMB/minute; the communication cost of iridium satellite phone is relatively expensive, about 30 RMB/minute
Communication functions: Maritime satellite phones can provide high-quality calls, Internet access, fax and video functions; Iridium satellite phones mainly provide functions such as calls, text messages and small amounts of data transmission.
Maritime satellite phones and Iridium satellite phones each have their own advantages and disadvantages. There is no absolute good or bad, only whether they are suitable or not. Users can choose the appropriate satellite phone based on their needs, region, budget and other factors
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