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欧洲航天局是如此评价小米8的,看完我都震惊了

发表在 汉化 06-06 12:09:31  来自PC 复制链接 手机看帖扫一扫!手机看帖更爽 308 14834

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Xiaomi - one of the fastest growing mobile brands - has launched the world’s first dual-frequency GNSS smartphone. Fitted with a Broadcom BCM47755 chip, the Xiaomi Mi 8, launched on May 31, is the world’s first smartphone providing up to decimetre-level accuracy for location-based services and vehicle navigation.

       

小米8已于5月31日发布,搭载博通BCM47755芯片,成为世界上首款可以为定位服务和车载导航提供分米级定位精度的智能手机。


Xiaomi has launched the world’s first dual-frequency GNSS smartphone, the Mi 8. This smartphone represents a breakthrough in GNSS technology as it is the first commercial deployment of Broadcom’s revolutionary BCM47755 chip.


小米已经发布了世界上首款支持双GNSS的智能手机小米8款智能手机可以GNSS的突破性代表,也是博通革命性的BCM47755芯片的首次商用。

The BCM47755, introduced last year, is a dual-frequency (E1/L1+E5/L5) GNSS chip that can compute location with an accuracy of up to a few decimetres. Until now, mobile location-based applications have been powered by single frequency GNSS receivers whose location accuracy is limited to a few meters. However, in recent years GNSS systems have been launching satellites broadcasting signals on new frequencies to open up new possibilities. Specifically, Galileo has the majority of satellites with E1/L1 and E5/L5 frequency capabilities.


去年发布的博通BCM47755是一款支持双频(E1/L1+E5/L5) GNSS的芯片,它可以将定位的计算精度提升到分米级别。此前依托于定位服务的移动应用受限于单频GNSS,其精度一直被限制在米级。但是近年来GNSS发射了很多支持全新频段的卫星,尤其是伽利略定位系统大部分都是由拥有E1/L1+E5/L5频段的卫星组成,这为提高定位精度增加了新的可能。


Leveraging Galileo for increased accuracy


使用伽利略卫星提高精度


Users of the Xiaomi Mi 8 and future models with dual-frequency GNSS will benefit from better positioning and navigation experience in urban environments. This is due to the unique shape of the E5/L5 frequency, which makes it easier to distinguish real signals from the ones reflected by buildings, reducing the multipath effect (a major source of navigation error in cities and other challenging environments). The numerous Galileo satellites broadcasting E5 make this improvement available for users all around the world. In addition, the simultaneous use of two frequencies reduces other sources of error, such as those due to the ionosphere, and the frequency diversity is more robust to interference and jamming.


米8以及未来将使用双频GNSS的终端产品用户,都将会在城市环境下获得更好的定位以及导航体验。这取决于E5/L5频段的特殊性,该频段可以更容易区分出真实信号和建筑物反射的信号,以降低多径效应的影响(多径效应是在城市和其他富有挑战性环境下引起导航偏差的主要来源)。数量众多的伽利略卫星可以广播E5信号为全球用户提供定位的精准提升。另外,同时使用双频信号可以减少如电离层造成的信号误差,多频信号更具抗干扰能力。


In addition to making existing applications more accurate, the enhanced position precision offered by dual-frequency GNSS will also create opportunities for new applications in areas such as augmented reality, vehicle navigation, and mapping.


除了现存应用可以更加精准定位外,双频GNSS还可为全新应用如增强现实、车辆导航以及地图测绘等提供更多机会。


Commenting on the product launch, European GNSS Agency (GSA) Head of Market Development Gian Gherardo Calini said that the arrival of the first dual-frequency GNSS smartphone to the mass-market represents a breakthrough for users all over the world. “The enhanced accuracy provided will empower developers to create new applications that meet the growing high accuracy location requirements of users and also open up applications that previously only ran in dedicated devices intended for professional use,” he said.


GSA(欧洲全球导航卫星系统局)市场开发负责人Gian Gherardo Calini在产品发布时评论称,全球首款双频GNSS智能手机进入大众市场对于全世界用户来说都是一个突破,“更精准的定位精度可以帮助开发者创造全新的应用去满足越来越高的定位需求,也能打开以前只能在专用设备上运行的应用程序。”


Alex Chou, vice president of product marketing for the Wireless Communications and Connectivity division at Broadcom Inc., said: “Broadcom is glad to gear up Xiaomi’s flagship smartphones with the very latest dual-frequency GNSS technology. Xiaomi Mi 8, the world’s first smartphone with BCM47755, will take smartphone GNSS navigation to a whole new performance level.”


博通公司无线通信和连接部门产品营销副总裁AlexChou表示:“博通很高兴看到小米最新的旗舰手机应用了双频GNSS技术。小米8作为全球第一款采用BCM47755的智能手机,将智能手机的定位导航提升了一个全新的水平。”


Zhiyuan Zang, Director of Product Marketing from Xiaomi, said: ”The importance of GNSS to modern life is undisputed, and is particularly important for smartphones. Navigation and LBS-based apps these days require greater positioning accuracy to work effectively, and dual-frequency GNSS is the key to delivering a great user experience when using these apps. Xiaomi is delighted and honored to be the world's first smartphone manufacturer to support dual-frequency GNSS. We will continue to pursue innovation for everyone to enjoy.”


小米产品市场总监臧智渊表示:“全球卫星定位系统是非常伟大的发明,对智能手机尤为重要。如今地图导航App和LBS-based App对于定位的精确性越来越高,双频GPS可以有效提升它们的体验。小米非常荣幸成为了全球首家支持双频GPS功能的手机厂商,我们会持续创新,让全球每个消费者都能享受科技带来的美好生活。”


Exciting times for geolocation


定位服务的新时代


The launch of the first dual-frequency GNSS smartphone, together with the opportunities offered by the availability of GNSS raw measurements in Android, creates exciting opportunities for the geolocation community. Access to raw measurements opens the door to algorithms once restricted to more advanced GNSS receivers. This, in turn, allows users to fully benefit from the differentiators offered by Galileo.


全球首款双频GNSS智能手机的发布,再加上Android系统提供的GNSS原始数据的访问权限,为定位服务开发者创造了令人兴奋的机会。对GNSS原始数据的访问权限为手机使用更高级的定位算法打开了一扇大门,此前仅有更高级的卫星定位接收器能够使用相关算法。这能让普通用户充分享受伽利略定位系统的独特优势。


Recognising these opportunities, last year, the GSA engaged with the academia and industry in the areas of navigation and positioning to innovate around this new feature, as part of a GNSS Raw Measurements Task Force. Then, in January this year, the GSA published a White Paper on the use of GNSS Raw Measurements in Android, providing developers with in-depth information on accessing and using raw measurements to implement advanced GNSS techniques in mass-market devices.


考虑到以上机会,去年开始,GSA(欧洲全球导航卫星系统局)鼓励卫星导航与定位领域的相关科研单位及公司围绕GNSS原始数据展开创新,并作为GNSS原始数据工作组的一部分。今年一月,GSA发布了在Android系统中应用GNSS原始数据的白皮书,向开发者提供了获取原始数据的深入介绍,以及应用这些数据为大众市场设备引入高级GNSS技术的指导。


Building on this work, the GSA and the Raw Measurements Taskforce shared their latest updates at a dedicated workshop – “GNSS Raw Measurements: From Research to Commercial Use” - held at the GSA headquarters in Prague on 30 May, where Broadcom presented their encouraging test results from the dual-frequency BCM47755.


在此基上,位于布拉格的GSA总部将在530日召开专题会,主题为“GNSS原始数据:从研究到商用。会上,GSAGNSS原始数据工作将分享域的最新展,博通也将公布双定位系BCM47755优异的测试结果。


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