时值盛夏,万物兴盛!喜闻自航天科工集团公司成立以来,首个新取得公开发行资质的学术期刊《导航定位与授时》创刊,我谨代表集团公司党组,代表高红卫董事长、曹建国总经理向你们表示热烈祝贺,向全体编辑部成员和为刊物作出贡献的同志们表示衷心感谢!在科学技术迅猛发展的今天,导航、定位与授时系统是国家最重要的战略性基础设施之一。近年来,导航、定位与授时的应用得到了快速发展,一方面推动了航 Since the founding of the First Aerospace Science and Industry Corporation, the first publication of a newly published academic periodical entitled “Positioning and Timing of Navigation” was published on the first day of publication. On behalf of the party group of the Company, on behalf of Chairman Gao Hongwei and Cao Jianguo, The manager warmly congratulates you and sincerely thanks all the editorial staff and comrades who contributed to the publication. With the rapid development of science and technology, the navigation, positioning and timing system is one of the country’s most important strategic infrastructures. In recent years, navigation, positioning and timing applications have been rapid development, on the one hand to promote the navigation