后续，航科院将联合多方技术团队，聚焦GLS的深度应用与融合创新，加快技术成果的转化与推广步 伐。 本次试飞采用我国自主研发并获适航认证的国产地面导航设备，飞行程序由中国民航科学技术研究院独 立设计，实地验证飞行则由中国国际航空公司专业团队执行。从设备、程序到验证飞行，全环节均依托 国内专业技术力量完成，是我国在RNP AR衔接GLS精密进近技术领域拥有完全自主知识产权的集中体 现。 拉萨贡嘎机场地处海拔3500米以上的高高原地区，地形复杂、气象条件多变，长期以来对航班运行安全 和准点率构成严峻挑战。此次成功验证的GLS程序，深度融合了RNP AR路径灵活性与GLS高精度水平 及垂直引导能力，有效突破了传统导航手段在复杂地形与恶劣天气下的局限，首次实现拉萨机场双向精 密进近。这意味着即便在低能见度等不利气象条件下，航班仍可安全、高效地执行精密进近与着陆，显 著提升运行安全裕度与航班正常性。 本次试飞成功，充分验证了GBAS程序及GLS与RNP AR技术融合运行的安全性与可操作性，为我国民 航后续推进GBAS技术应用，以及高高原机场GLS与RNP AR导航技术组合，提供了完整的实践方案与 经验。项目的成功实施，体 ...

Core Viewpoint - The European luxury car industry is facing significant profit declines due to U.S. tariffs, with major companies like Mercedes-Benz, Porsche, and Audi reporting steep drops in earnings and sales [1][2][4]. Group 1: Financial Impact - BMW reported a sales revenue of €67.7 billion for the first half of the year, an 8% decrease year-on-year, with a net profit of €4 billion, down 29% [2]. - Mercedes-Benz's profits halved from approximately €6.1 billion to about €2.7 billion in the first half of the year, with a 9% decline in global sales [2]. - Porsche's net profit plummeted 71% to €718 million in the first half of 2025, with a nearly 91% drop in automotive business operating profit in Q2 [4]. - Audi's profits fell 37.5% to €1.3 billion in the first half of 2025, with U.S. tariffs causing approximately €600 million in losses [4]. Group 2: Tariff Effects - The U.S. tariffs have created significant uncertainty for companies, with Mercedes-Benz stating that the tariffs have impacted sales and profitability, reducing its profit margin from a potential 6.6% to 5.1% [2]. - The new trade agreement between the U.S. and EU, while reducing tariffs from 27.5% to 15%, still imposes a higher rate than previously, leading to ongoing financial strain for European manufacturers [5]. - The automotive industry is considering passing tariff costs onto U.S. consumers, with companies like Porsche and Aston Martin already raising prices [1][5][7]. Group 3: Market Dynamics - The North American market is crucial for European automakers, with over 20% of European car exports directed to the U.S. [6]. - Companies like Audi and Porsche, which do not have U.S. production facilities, are particularly vulnerable to tariff impacts [6]. - The competitive landscape is shifting as Chinese electric vehicle brands gain market share, exacerbating challenges for German manufacturers [8][9].