卫星电话

卫星电话是一种连接到轨道卫星而不是地面基站的移动电话。

卫星电话

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比较 5 款最佳卫星电话


 

  Thuraya XT 精简版 Thuraya XT PRO 出售 出售铱星 9555 卫星电话 铱星 9575 至尊卫星电话 国际海事卫星组织 Isatphone 2
模型 THURAYA XT 精简版 THURAYA XT PRO 铱9555 极端铱 卫星电话2
网络 苏拉亚 苏拉亚 国际海事卫星组织
电话费用 499.95 美元 749.95 美元 1150.00 美元 1395.00 美元 899.95 美元
星座 2 颗卫星 2 颗卫星 66 颗卫星 66 颗卫星 3 颗卫星
使用面积 欧洲、非洲、亚洲、澳大利亚 欧洲、非洲、亚洲、澳大利亚 100% 全球 100% 全球 全球(极地地区除外)
谈话时间 长达 6 小时 长达 9 小时 长达 4 小时 长达 4 小时 长达 8 小时
待机时间 长达 80 小时 长达 100 小时 长达 30 小时 长达 30 小时 长达 160 小时
全球定位系统 是的 是的 是的
求救 是的 是的 是的
蓝牙 是的
长度 128毫米 140毫米 143毫米 140毫米 169毫米
宽度 53毫米 60毫米 55毫米 60毫米 75毫米
深度 27毫米 27毫米 30毫米 27毫米 36毫米
重量 186克 212克 266克 247克 318克
工作温度 -10°C 至 55°C -10°C 至 55°C -10°C 至 55°C -10°C 至 55°C -20°C 至 55°C
防护等级 不适用 IP65 不适用 IP65 IP65
  立即购买 立即购买 立即购买 立即购买 立即购买
 

 

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什么是卫星电话?
卫星电话(卫星电话、终端、卫星手机)是具有标准电话功能的移动通信设备,可连接到头顶上的静止或轨道卫星。与手机相比,卫星电话更大、更重,而且功能通常仅限于语音通话和短信。它们不像智能手机那样提供智能高端用户体验和前端界面功能,但技术在不断进步,卫星电话的设计也在不断进步。从本质上讲,卫星电话的设计目的是连接到卫星(并绕过蜂窝网络),其唯一目的是在无法使用手机时拨打电话或发送短信。

让我们从基本的地面技术——手机开始。手机需要连接到物理蜂窝塔才能拨打电话、发送短信或通过移动数据访问互联网服务。而且,正如我们大多数人曾经经历过的那样,各种因素都会影响蜂窝连接的信号强度,特别是与蜂窝塔的距离。输入卫星电话。

然而,卫星电话也不能免受中断的影响,尽管这种情况很少见,但太阳耀斑等自然现象可能会扰乱卫星通信。此外,一些国家/地区禁止在其境内使用卫星电话,因此强烈建议您先咨询您要访问的国家/地区。

卫星电话和网络技术
不同的卫星电话系统使用不同的技术,因此这些特殊电话不能互换,也不能像普通移动设备那样具有网络漫游功能。卫星通信中使用的两种主要技术是地球同步卫星(GEO)和低地球轨道(LEO)系统,因此不同的卫星电话有特定的配置。

GEO 卫星在距天空约 35,000 公里的固定位置跟随地球自转,位于赤道上方,覆盖广大区域。如果卫星电话网络提供商拥有 2 至 3 颗卫星,构成其“卫星星座”,则他们可以主要为卫星电话用户提供全球覆盖。 Inmarsat 和 Thuraya 这两家卫星通信公司都使用地球同步配置。

LEO 卫星绕地球运行的距离要短得多,提供了足够的机会与您的卫星电话连接。无论是 LEO 还是 GEO,视线越清晰,连接效果就越好。这些技术很复杂,各有利弊,但对这些技术有基本的了解将帮助您做出明智的决定,无论您是要购买还是寻找卫星电话租赁

 

比较卫星电话覆盖地图


 

国际海事卫星组织 苏拉亚
Iridium Coverage Map Inmarsat Coverage Map Thuraya Coverage Map
100% 全球覆盖 除极地地区外的全球覆盖 仅覆盖欧洲、非洲、亚洲、澳大利亚

 

卫星电话提供商
Iridium、Inmarsat、 Thuraya和 Globalstar 是全球卫星通信行业的主要参与者,它们的卫星工作方式各不相同。铱星在近地轨道上使用 66 颗卫星,而全球星则有 18 颗。Inmarsat 和 Thuraya 均使用地球静止轨道卫星,轨道距地球 35,786 公里(22,236 英里)。

当使用铱星卫星电话时,卫星将向您移动(头顶),而使用 Inmarsat 或 Thuraya 电话时,您将需要向卫星移动。虽然铱星似乎具有保证连接的优势,但随着卫星经过并远离您,通话质量下降的风险也更高。一旦您找到 Inmarsat,与 Inmarsat 的连接可能会更加一致。


Iridium® 网络由由 66 颗交叉链接的低地球轨道 (LEO) 卫星组成的独特复杂的全球星座提供支持,在地球整个表面(包括跨航线、海洋和极地地区)提供高质量的语音和数据连接。 Iridium 为需要真正全球通信的市场提供创新且丰富的可靠解决方案组合。

铱星于2019年初完成了星座升级,更换了所有卫星并升级了配套的地面基础设施。这促成了Iridium Certus ® 的推出,这是一个提供专业宽带服务的新多服务平台,其他中带服务即将推出。

铱星公司的 LEO 网络距离地球仅 780 公里,与 GEO 卫星相比,它具有极对极的覆盖范围、更短的传输路径、更强的信号、更低的延迟和更短的注册时间。在太空中,每颗铱星卫星最多可与其他四颗卫星相连,创建一个动态网络,在卫星之间路由流量,以确保全球覆盖,即使在传统本地系统不可用的情况下也是如此。

国际海事卫星组织
国际海事卫星组织的便携式和固定电话服务为世界各地偏远地区的企业提供必要的语音通话和消息传送服务。手持、移动和固定服务套件可在陆地、海上和空中使用。他们利用世界上最先进的卫星通信网络,提供清晰的语音质量和最小的掉话率。

苏拉亚
Thuraya 手机可以连接到位于新加坡和非洲东海岸上空的两颗 GEO 卫星,因此覆盖范围高达 70%,其中不包括加拿大、美国、南美和新西兰。

购买卫星电话
卫星电话是专有的,专为特定网络而设计,不能切换到其他网络。购买卫星电话时要考虑的三个要点是覆盖范围、成本和功能。

  • 一般来说,卫星电话通信平均每分钟 1.50 美元,并且有不同的卫星电话计划可涵盖通话和支持,但对于偶尔或紧急联系,费用无关紧要。该设备的价格范围从 800 美元到 2,000 美元不等,其中 Iridium 价格较高,Thuraya 价格较低。
  • 铱星卫星星座在网络和覆盖范围方面获得了较高的评价,但您需要为此支付更多费用,而国际海事卫星组织则处于中间位置,其质量、覆盖范围和成本都比较合理。如果您要去 Thuraya 的两个卫星位置附近,请考虑将 Thuraya 作为一个低成本选择。
  • 某些功能对于不同的人和不同的情况很重要。像Iridium 一样,它提供了与 GEOS 集成的强大 SOS 功能,而Inmarsat和 Thuraya 则允许您与指定联系人共享您的实时位置。

无论哪种卫星电话适合您的口袋和您的具体需求,如果您计划访问手机覆盖范围很小或没有手机覆盖的偏远地区,或者您需要紧急备用通信设备,那么卫星电话可能会非常有用,如果不救命。

卫星电话配件
您的卫星电话有多种配件可供选择。其中包括备用电池天线扩展坞外壳充电器等。

车内卫星电话
卫星电话的设计只能在晴朗的天空下使用。车辆的车顶通常足以干扰卫星信号。为了能够在车辆中使用卫星电话,您通常需要卫星电话的扩展坞和天线。扩展坞或码头是卫星电话位于车内的位置,根据型号的不同,可以提供多种功能,包括免提、蓝牙、紧急按钮、GPS 跟踪等。天线安装在车辆外部,并通过天线电缆连接至扩展坞。根据天线的不同,可能包含电缆,或者您可能还需要天线电缆。

卫星电话限制
树木、山脉、高楼都是卫星电话的天敌。连接到网络以及拨打和接听电话需要到卫星的视线。因此,如果卫星位于建筑物、树木或山脉后面,您将无法使用卫星电话。

 

Line of Sight

卫星电话受到限制的国家/地区
世界上许多国家出于各种原因取缔或禁止卫星电话。 2011 年孟买恐怖袭击后,印度禁止使用铱星和 Thuraya 卫星电话。那些将铱星和苏拉亚卫星电话带入印度的人,即使是在中途停留,也可能会遭到逮捕和监禁。印度允许使用INMARSAT卫星电话,但您需要获得电信部 (DoT)的许可。

在古巴,许多电子产品都是被禁止的,包括卫星电话。除非获得古巴信息和通信部的许可,否则不能携带或运送卫星电话进入古巴。古巴限制卫星电话的使用,因为它们被视为用于颠覆目的的工具;与人在一起可能会导致逮捕、监禁或间谍指控。

其他卫星电话受到限制、禁运、禁止或非法的国家或地区包括塔利班控制的阿富汗、乌克兰的克里米亚地区、孟加拉国、乍得、中国、伊朗、利比亚、缅甸、尼日利亚、朝鲜、俄罗斯、斯里兰卡、苏丹、泰国和越南。此列表可能随时更改,因此请咨询您要旅行的国家/地区,以避免在边境出现不愉快的意外情况。

 

卫星电话常见问题解答


卫星电话有互联网功能吗?
大多数卫星电话提供互联网接入的速度比拨号慢。还记得拨号吗?当互联网过去在连接时对你尖叫时。比那慢。虽然卫星电话连接对于某些应用程序仍然有用,例如下载针对卫星电话优化的天气地图,但大多数用户会发现速度非常慢。我们提供的卫星互联网终端的速度比卫星电话快约 100 倍,适用于各种应用,包括船舶、便携式、车载和固定。

什么是卫星电话?
卫星电话是手持式(通常)通信设备,可让您在蜂窝网络和固定电话网络不可用的情况下进行通信。

卫星电话用在什么地方?
卫星电话通常用于偏远地区或海上。卫星电话在市区通常无法正常工作

为什么要使用卫星电话?
卫星电话提供了一种蜂窝网络无法到达或不可用的通信方式。

谁使用卫星电话?
在蜂窝区域之外工作、生活或玩耍的任何人。

您可以在铱星手机上使用 Inmarsat 套餐吗?反之亦然?
不,卫星电话是专有的,每个电话网络都有自己的套餐选择。

Category Questions

The USB port on 9555's and 9575's is intended for Firmware upgrades and tethering only. Though the charge symbol flashes when plugged in, the power gain is minimal. 

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If you're thinking about getting a satellite phone, you might wonder: Are satellite phone calls free? You can't call a free number. However, most service providers use a two-stage dialing process, in which the caller dials an access number to make a long-distance call and then inputs the sat phone number and PIN code to connect. This process is called "direct sat phone calling" and it is not considered "free" calling. Direct sat phone calls are charged at a flat rate of $4 to $11 per minute, and the person making the call pays a one-time flat fee of $11. The customer who has the rental phone is not charged for incoming calls.

Incoming calls to satellite phones are not free. You can get a free phone number with some satellite services, but international calls will cost anywhere from $4 to $7 per minute. When you want to make a call from a satellite phone, you need to dial the Inmarsat Phone Number, which is 870-xxxxxxxx or 011 + Inmarsat. A satellite phone is similar to a regular cell-phone, but the cost is higher.

If you want to make satellite phone calls, you need to make sure that your satellite phone is outside. Any obstructions in the way of the satellite can interfere with the signals. Once you have the phone outside, turn it on. Once it registers, you can begin making calls, but you can't reach 1-800 numbers with it. If you're interested in getting a satellite phone, you can read about the costs of using it here.

You can make free satellite phone calls with the +1 Access plan, but you'll have to pay for incoming calls. The service costs $15 per month and is a good choice for any satellite phone user. It has no hidden fees, and it's easy to use. It's also worth considering the type of environment you're going to be in. If you need to use it in the office, you can get specialized accessories for it.

If you're not using a satellite phone in an office or business, it's possible that you'll have to pay for a monthly activation fee. You'll also have to pay for the +1 Access plan. Nonetheless, this service isn't available with the Inmarsat service. If you want to keep calls free, you can use SatCollect. It's a great choice for any satellite phone user.

There are no free incoming calls on a satellite phone. Despite the fact that most of them work well in the U.S., they can be expensive in areas without a reliable service. In addition, they don't work in all areas. Several companies offer better coverage in certain regions. If you're going to travel frequently, it's best to purchase a pre-paid plan, which can range from $100 to $5,000.

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There are several ways to track satellite phones. The Electronic Frontier Foundation, a San Francisco nonprofit, has written about the potential risks journalists face when using satellite phones for reporting. Some satellite phones can be tracked using radio frequency emissions, which are easily received by a trained technician. Another method is to use a tracking device, such as an Iridium Extreme, to send position reports on a scheduled basis. In order to track a satellite phone, the phone must be powered on and registered with the network.

The technology for tracking a satellite phone is fairly accurate. It looks at the world from space and combines the signals of cell towers and other devices to determine the exact location of the device. However, consumer-grade tracking devices are rarely accurate enough to pinpoint the exact location of the phone to within a few inches. They're often off by 32 to 98 feet, or 10 to 30 meters, or as much as 164 feet. The professional-grade trackers are more reliable.

The accuracy of satellite-based tracking depends on several factors. Because of the large number of users and different types of phones, not all phones are capable of being tracked by satellite. For example, some cellular phones don't have the hardware to track by a satphone, while Treo and BlackBerry are popular brands that can be tracked by satellite. In addition to the limitations of a satellite-based tracking device, smartphones without a trilateration chip rely on WiFi and cell towers to get the location.

Although the technology used to track satellite phones is fairly accurate, it is rarely accurate enough to pinpoint a phone's position to a few inches. The most accurate consumer-grade trackers are about 32 to 98 feet off, and as high as 164 feet. Military and professional-grade trackers generally perform better. They do not require the assistance of a third-party. If you have a smartphone, satellite phone tracking may be a great option.

As long as a satellite phone is within range of a GPS tower, you can use a satellite phone tracker to track its owner. Most consumer-grade trackers work in countries around the world, but they are not very accurate. These devices must be placed where they can be seen. In addition, they can also be used to monitor an individual's location in a foreign country. They work by a line of sight.

As long as a phone is within the range of the satellite, the device will be able to track the user. The technology is very accurate. Some consumer-grade trackers can trace the user's location to within an inch. If a satellite phone is within range of a cellular tower, the tracking service is more accurate than the cellular tower. Some smartphones have the hardware necessary to be tracked by satellite.

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There are three main satellite phone providers. Globalstar, Iridium, and Inmarsat cover the largest areas and offer 100 percent coverage. Each provider has its own strengths and weaknesses, but they all have their advantages. Ultimately, it comes down to what you need from your phone. Listed below are some of the features that each provider has to offer. Read on to discover which one is best for your needs.

For people who live far from the nearest land, the best satellite phone provider is Iridium. The company is the only one that makes phones that can function in the polar regions. Their phones are more advanced and have better features. Some users prefer Iridium because of its low price and high-quality service. If you're looking for a quality sat phone, Iridium is your best bet.

You should also consider the cost of calling a satellite phone. Most providers provide only US and Canada-based phone numbers. If you want to talk to friends and family in the US, Iridium is the best choice. Besides offering high-quality phones, they also offer a range of features, including a GPS receiver. For people who live in the polar regions, Iridium is the best choice.

Choosing a satellite phone provider is an important decision. Different providers have different pricing plans and features. Depending on your budget, you can choose from a monthly, annual, or lifetime plan. VoIP is more affordable if you have reliable internet connection. However, satellite phones are a better option for people who need to be mobile but cannot always stay connected to a network. It is possible to call an operator and get help if your service doesn't work properly.

A satellite phone can cost a few dollars a month to several hundred dollars. Depending on the type of device, the equipment costs vary. If you are traveling to remote areas, you can choose the most reliable satellite phone based on its location. But you should also consider whether you need a feature that isn't available in your country. If you don't want to spend a lot of money, consider switching to another provider.

There are two main types of satellite phones. You can choose the one that offers the highest quality and lowest price. A monthly plan can be costly, and a monthly plan can be an option you may not be able to afford. Generally, you should choose a satellite phone that allows you to make calls from a remote area. If you're traveling to remote locations, you should choose a prepaid plan.

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A satellite phone is a type of mobile device that offers a reliable connection around the world. These phones are especially useful in remote areas, when terrestrial coverage isn't available. There are many benefits of having a satellite phones, and the convenience and functionality is worth the price. Satellite phones can help save lives in emergency situations and disasters. They are very easy to use, and are an excellent tool for coordinating relief efforts. ... Read more

The psuedo country code for Iridium phones is 8816, Inmarsat is 8788. It is an international formated dialing pattern and if you call the sat phone from a conventional line you will be billed for international calling. The location of the handset at the time of the call is not a  determining factor. 

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