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人在家中坐,定位玄武湖?南京卫星应用行业协会发声

  • 2026-04-16 02:14:14
人在家中坐,定位玄武湖?南京卫星应用行业协会发声

12月17日晚,许多南京网友发帖称,多个常用的导航软件出现定位不准、导航路线出错等问题。

网友帖文截图

12月19日,南京卫星应用行业协会发布“关于12月17日南京区域导航信号异常情况的技术性探讨分析”。

内容如下——

2025年12月17日傍晚,南京部分区域出现导航定位异常现象,引发社会广泛关注。为澄清公众认知误区、解读技术原理与战略价值,南京卫星应用行业协会作如下说明:

一、离线地图无法解决本次导航异常问题

本次导航失灵的核心原因是GNSS卫星信号(含北斗、GPS)受到临时干扰压制,而非网络信号中断,因此下载离线地图并无实际意义。

从技术原理来看:

1.离线地图的核心功能是存储地理数据,仅解决“地图显示”问题,无法替代定位信号来源;

2.手机导航需依赖GNSS卫星信号(至少4颗卫星)解算位置坐标,再将位置信息匹配至地图,定位信号与地图数据是相互独立的两大系统;

3.本次干扰精准针对北斗、GPS民用频段,导致定位信号无法被接收机识别,即便搭载离线地图,也因缺乏位置数据源出现定位漂移、无数据反馈等问题,无法实现有效导航。(离线地图更适用于公海荒漠深山等有卫星定位信号、无通信网络信号的区域)。

二、北斗与GPS民用频段兼容的战略意义得到验证

本次异常中北斗与GPS信号同步受影响,恰恰印证了我国北斗系统民用频段规划的前瞻性战略眼光

1. 国际卫星导航频谱资源遵循“先到先得”规则,GPS早年间占据了L频段核心资源,北斗立项时优质频谱已所剩无几;

2. 基于国际电联框架,北斗民用信号(B1C频段)与GPS民用信号(L1C频段)实现兼容互操作,既突破了频谱资源封锁,更形成“干扰北斗即干扰GPS”的战略制衡;

3. 考虑到美国与欧盟的军事绑定特性,北约体系同样依赖GPS信号频段,这种频段兼容设计构建了重要的战略威慑——任何针对北斗民用信号的干扰,都将同步影响GPS相关应用,从根本上遏制了恶意干扰的可能性,为我国民用导航服务筑牢安全屏障

三、北斗军用频率具备强抗干扰能力,不受影响

需明确说明的是,本次信号异常仅涉及民用GNSS频段,北斗军用频率完全不受干扰:

1. 北斗系统采用军民频段分离设计,军用频率为专属保密频段,与民用频段物理隔离;

2. 军用系统搭载全数字抗干扰技术、自适应智能滤波算法等核心技术,可精准识别并过滤干扰信号,具备极强的抗干扰与抗欺骗能力;

3. 作为国家重要空间基础设施,北斗军用频段的独立性与抗干扰性,始终为国防安全、关键领域应急保障提供稳定可靠的时空服务,这一核心能力从未受本次民用信号干扰影响。

本次导航异常如果系重大活动安保所需的临时信号管控措施,也属于行业内常规安全保障手段,相关信号已在活动结束后逐步恢复正常。

南京卫星应用行业协会将持续关注行业动态,及时分享卫星应用专业知识,助力公众科学认知卫星导航技术。

南卫协将继续在中国卫协的领导下搭建企业与政府沟通桥梁,欢迎相关企业积极参会,协会免收会费。

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  1. CONNECT:[ UseTime:0.001064s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001592s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000708s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000626s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001346s ]
  6. SELECT * FROM `set` [ RunTime:0.000575s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001415s ]
  8. SELECT * FROM `article` WHERE `id` = 524374 LIMIT 1 [ RunTime:0.002208s ]
  9. UPDATE `article` SET `lasttime` = 1776333159 WHERE `id` = 524374 [ RunTime:0.004813s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000634s ]
  11. SELECT * FROM `article` WHERE `id` < 524374 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000996s ]
  12. SELECT * FROM `article` WHERE `id` > 524374 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002273s ]
  13. SELECT * FROM `article` WHERE `id` < 524374 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003550s ]
  14. SELECT * FROM `article` WHERE `id` < 524374 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004308s ]
  15. SELECT * FROM `article` WHERE `id` < 524374 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003172s ]
0.182156s