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在菲律宾的一个前美国海军基地附近发现了一艘身份不明的飞艇，导致了对军事情报收集的担忧。
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飞艇的照片在被删除之前被分享到Facebook和Twitter上。
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没有证据表明该飞艇来自中国，但它的设计与中国国有航空工业公司开发的无人驾驶类型相似。
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自2014年以来，这些产品一直在广东的中国航展上展出。
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中国飞艇在南海苏比克湾的前美国基地附近被发现
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毗邻地区受到中国、菲律宾和其他国家的竞争性领土主张的影响
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飞艇的形状与中国正在开发的高空长航时类型 “大体相似”
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有人猜测，飞艇可能在收集军事信息
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据报道，中国正在探索用于情报、监视和侦察任务的轻于空气的平台。
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美国空战学院教授斯蒂芬-伯吉斯指出，美国在菲律宾的基地已经在1991年被访问部队协议所取代。
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这表明，中国可能正在寻求增加其在该地区的存在，而美国可能需要采取更多措施来应对，以保持其影响力。
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平流层飞艇是自主大气飞行平台的一个新概念。
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它在很高的高度上长时间停留在空中的能力使它适用于军事和商业目的。
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这些目的包括监测、监视和科学探索。
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据报道，中国军方尚未使用飞艇。
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中国已经开发了用于科学研究的平流层飞艇。
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据Collin Koh称，这种平台的监视效用取决于高度和对目标的距离。
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北京在南海的ISR工具可能包括飞艇，但它不是唯一的工具。
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据称有人看到一艘中国飞艇在菲律宾附近飞行，恰逢北京和马尼拉就上个月的一起事件发生争执。
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前解放军教官宋忠平说，如果这艘飞艇在菲律宾领空上空飞行，就符合国际法。
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据宋忠平说，不管飞艇属于哪个国家，也不管它在做什么，只要不侵入菲律宾的领空，它就有权利自由飞行。
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上个月的事件涉及中国海岸警卫队在有争议的水道中 "强行收回 "菲律宾士兵的火箭碎片。
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北京否认与在南中国海发现的一艘飞艇有任何关系，声称它只是在回收火箭发射的部件。
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2019年11月，以色列卫星公司ImageSat International（ISI）在美济礁上空发现了一个飞艇状物体。
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包括美国和法国在内的多个西方国家正在开发由绿色能源驱动的高空飞艇。
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中国航空工业通用飞机公司自2016年起与法国飞鲸公司合作，开发一种名为LCA60T的飞艇，容量为60吨。
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中国航空工业通用飞机公司自2016年起与法国飞鲸公司合作，开发一种名为LCA60T的飞艇，容量为60吨。
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5月，中国科学家发射了Jimu-1航空器，这是一个充满氦气的系留飞艇。
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它的重量为2.6吨，体积为9,060立方米。
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该飞艇将在青藏高原9032米的世界纪录高度上收集气象数据。
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中国在博斯腾湖附近建造了巨大的机库，这是解放军空军的一个秘密的无人驾驶平台基地。
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An unidentified airship was spotted near a former US naval base in the Philippines, leading to concerns of military intelligence gathering.
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The pictures of the airship were shared on Facebook and Twitter before being deleted.
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There is no evidence of the airship being from China, but it has a design similar to unmanned types developed by the state-owned Aviation Industry Corporation of China.
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These have been on display at AirShow China in Guangdong since 2014.
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Chinese airship spotted near former US base in Subic Bay, South China Sea
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Adjoining area subject to competing territorial claims from China, Philippines, and other countries
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Airship shape has “broad similarities” to high-altitude, long-endurance types known to be under development in China
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Speculation that airship could be collecting military information.
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China is reportedly exploring lighter-than-air platforms for intelligence, surveillance and reconnaissance missions.
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Stephen Burgess, a professor in the US Air War College, noted that US bases in the Philippines have been replaced with a visiting forces agreement in 1991.
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This suggests that China may be looking to increase its presence in the region, and the US may need to respond with increased measures to maintain its influence.
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Stratospheric airship is a new concept in autonomous atmospheric flight platforms.
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Its capability to stay in the air for long periods of time at very high altitudes make it suitable for military and commercial purposes.
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These purposes include monitoring, surveillance, and scientific exploration.
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China’s military has not been reported to be using airships.
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China has developed stratospheric airships for scientific research.
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According to Collin Koh, the utility of such a platform for surveillance depends on altitude and range to target.
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Beijing’s ISR tools in the South China Sea may include the airship, but it is not the only tool.
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An alleged sighting of a Chinese airship flying near the Philippines has coincided with a row between Beijing and Manila over an incident last month.
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Former PLA instructor Song Zhongping said that the airship would have been in accordance with international law if it was flying above Philippine airspace.
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According to Zhongping, no matter what country the airship belongs to, or what it is doing, it has the right to fly freely if it does not intrude into the airspace of the Philippines.
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The incident last month involved the Chinese coastguard “forcefully retrieving” rocket debris from Filipino soldiers in the disputed waterway.
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Beijing has denied any involvement with an airship spotted in the South China Sea, claiming it was merely retrieving parts from a rocket launch.
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In November 2019, an airship-shaped object was spotted by Israeli satellite company ImageSat International (ISI) over Mischief Reef.
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Various Western countries, including the US and France, are developing high-altitude airships that are powered by green energy.
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China Aviation Industry General Aircraft has been in partnership with French company Flying Whales since 2016 to develop an airship called the LCA60T, with a capacity of 60 tonnes.
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In May, Chinese scientists launched the Jimu-1 aerostat, a helium-filled tethered airship.
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It has a weight of 2.6 tonnes and a volume of 9,060 cubic metres.
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The airship will collect weather data at a world-record altitude of 9,032 metres from the Qinghai-Tibet Plateau.
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China has built giant hangars near Bosten Lake, a secretive PLA Air Force base for unmanned platforms.
链接：Mystery airship spotted over Philippines near South China Sea | South China Morning Post