level 3
中国第八颗北斗卫星[1]在4月10日发射成功,相关专家向表示其发射成功对通信行业[2]影响意义重大,尤其是在授时功能方面。

目前,我国的CDMA以及TD-SCDMA[3]在工作的切换、漫游等方面都需要GPS的授时功能。而GPS是美国空军[4]主要定位系统,其研制和维护都归属于美国国防部[5]。在此种情况下,相关专家担忧道:"如果我国通信网络[6]技术完全依赖美国GPS系统是存在安全隐患。"

该专家表示"因此,我国发展此种技术是非常有必要的,否则我们的网络安全都掌握在别人手里是一件很危险的事。并且虽然现在我们各行各业[7]都在免费使用着,如果以后GPS要收费怎么办?"

中国北斗卫星导航系统除了可以提供高精度[8]、高可靠的定位、导航[9]和授时[10]服务。 "我国北斗卫星成功的发射意味着我国将摆脱对美国GPS依赖,并且也使人们有了更多选择。而且以后加入北斗卫星的芯片[11]成本越来越低,现在相关孵化器[12]已经建成。"相关专家如是说。

北斗卫星短报文的功能也引起了业内人士的注意。相关专家表示,短报文功能类似于短信[13],但是它可以达到电信网[14]到达不了的地方,南海渔业已有了相关的用民。实际上早在2008年汶川地震[15]时,北斗卫星的短报文就起了很重要的作用:在灾区没有电话、电信网络中断的情况下,它精准的报告了方位和灾情。

The 8th Chinese Beidou satellite was launched successfully on April 10th. Experts in this field express that this satellite has a very significant influence and contributions, especially in the GPS clock function.

At present, the Chinese CDMA and TD-SCDMA require a GPS clock function in switching, roaming and other functions. Though such GPS is mainly a product of the American Air Force, and is constantly developed and maintained by the United States Department of Defense. Regarding this matter, relevant experts worry that "our country's communications industry network technology could face safety risks if we depend on American GPS system completely."

These experts say: "So it is necessary for our country to develop the technology. It is dangerous if our net safety is controlled by others. At present, all walks life use this GPS service free of charge, but what till we do if it will cost money later on?"

The Chinese Beidou satellite navigation system can provide high precision and a high reliable location, navigation and time service. "Beidou satellite's successful launch means that our country will become independent of American GPS, and people will have more choices. Furthermore, the chip added to the satellite would cost less and less later on, as relevant incubating machinery has been constructed already", Relevant experts said.

The Beidou satellite's short message function has caught the attention of industry personnel. Relevant experts explain that the function is similar to SMS, but it can reach areas beyond the range of telecommunication networks, and individuals from the fishery industry in the South Chinese Sea have tried it already. In fact, as far back as 2008, during the Wenchuan Earthquake, the short message function has played an important role. It can accurately report locations and conditions during a disaster situation, where there is no phone line and the telecommunication network is interrupted.


[1] 北斗卫星 běidǒu wèixīng - Beidou (Big Deeper) satellite, Beidou navigation system; a Chinese project, attempting to develop an independent satellite navigation system. Currently the experimental Beidou1 satellites are used (the 8th among them was launched on April 10th 2011). The Beidou2 satellites are intended to be completed and used later on, with the aim of completing a global satellite navigation system by 2020.

[2] 通信行业 tōngxìn hángyè - Communication industry

[3] CDMA, TD-SCDMA - Code Division Multiple Access (CDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA); the latter is a an air interface found in UMTS mobile telecommunications in China, serving as an alternative to the commonly utilized CDMA, as China seeks to establish an independent system in this field.

[4] 空军 kōngjūn - Air Force

[5] 国防部 guófángbù - Ministry of Defense

[6] 网络 wǎngluò - Network

[7] 各行各业 gèhánggèyè - Every industry, all walks of life

[8] 精度 jīng duó - Precision

[9] 导航 dǎoháng - Guided navigation

[10] 授时shòushí - Time service

[11] 芯片 xīnpiàn - Chip

[12] 孵化器 fūhuà qì - Incubating machinery

[13] 短信 duǎnxìn - Short message service (SMS)

[14] 电信网 diànxìn wǎng - Telecommunications system

[15] 汶川地震 wèn chuān dìzhèn - Wenchuan earthquake, also known as the Sichuan earthquake, May 12th 2008, in which approximately 70,000 people were killed.



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