北斗帮助抢救渔民上万人 局地可实现厘米级高精度服务
泰伯网讯 据中新网报道,国新办今日举行新闻发布会,介绍北斗系统开通五周年有关情况。中国卫星导航系统管理办公室主任、北斗卫星导航系统发言人冉承其在会上指出,中国北斗是第一个也是目前唯一把通信和导航很好融合起来的系统,已累计抢救渔民超过1万人。目前在中国境内已建设了基于北斗的高精度“一张网”,初始服务能力可以提供米级、分米级的高精度服务,在某些局部区域已经实现了厘米级的高精度服务。
会上有记者问:请问与美国和欧洲的卫星导航系统相比,北斗系统有哪些特别之处,北斗现在的水平怎么样。刚才您在开场介绍中也提到了“一带一路”,在“一带一路”沿线国家北斗的覆盖情况怎么样,北斗又在其中发挥了怎样的作用? 冉承其介绍,现在全世界有四大全球卫星导航系统,美国的GPS、俄罗斯的格洛纳斯、欧洲伽利略和中国的北斗,这四个都在或者正在提供全球的服务。中国北斗采取“继承和创新融合的技术体制”,具备其他三大系统所具有的技术体制或者优势,此外还保留了原来北斗一号具有的短报文和位置报告服务能力。位置报告和短报文服务是其他系统不具备的,在中国和地区已经提供服务,并发挥了越来越重要的作用。所以,北斗是第一个也是目前唯一把通信和导航很好融合起来的系统。 从应用层面来讲,冉承其距离说,比如在渔业领域的应用,现在中国大部分渔船都加上了北斗终端,由于北斗具有位置报告和短报文服务,我们就很好的把渔船应用和管理结合起来。2003年北斗系统向渔船开放以后,累计抢救渔民超过1万人,渔民经常说“北斗是渔民的海上保护神”。 冉承其介绍,北斗的另外一个特色就是高精度服务,我们在中国境内建设了基于北斗的高精度“一张网”,这张“网”在今年上半年已经基本上具备提供服务的能力,初始的服务能力可以提供米级、分米级的高精度服务,在某些局部区域已经实现了厘米级的高精度服务。高精度的服务会带来整个传统位置导航服务的革命性变化。举个例子,很多人用车辆载导航仪在普通导航的时候往往容易出错,但如果用了高精度导航,你不需要自己操心,即使是一个路痴也可以享受北斗高精度服务。又比如高精度服务应用在消防上,可以让消防赢得抢救最后的“宝贵一百米”,或者是“灭火黄金一分钟”。所以,高精度的服务正在中国境内成为一种像水电一样的公共服务。 至于为什么要把“一带一路”作为优先考虑?冉承其指出,“一带一路”是中国政府的国家倡议,北斗系统既是中国的,也是世界的,我们要为世界做出更多的贡献。因此,我们在北斗三号建设的过程中,就特别把“一带一路”优先服务作为重要的考虑,在方案论证和发射组网计划的优化过程中,也优先考虑“一带一路”的实施。所以在2018年底要发射18颗左右的卫星,可以优先为“一带一路”国家和地区提供服务。这个服务是与现在的北斗系统已经具备的服务能力是相当的,并且还要进一步提高。同时,向“一带一路”国家和地区提供更多的人才培养和技术交流,以及中国已有成熟应用方案的推广使用。
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