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VPM可控震源系统在复杂电磁干扰条件下的应用
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作者 于春龙 吴耀琴 高科宏 《物探装备》 2022年第1期28-29,33,共3页
VPM可控震源生产管理系统是一种基于4G网络、MESH自组网络等关键技术的震源激发控制系统,特别适合应用于无线节点仪器生产项目。目前该系统还处于应用的初期阶段,还有很多问题需要在应用过程中不断完善。由于VPM系统配置灵活、操作简单... VPM可控震源生产管理系统是一种基于4G网络、MESH自组网络等关键技术的震源激发控制系统,特别适合应用于无线节点仪器生产项目。目前该系统还处于应用的初期阶段,还有很多问题需要在应用过程中不断完善。由于VPM系统配置灵活、操作简单的特点,造就了其在复杂野外作业环境下的高适应性能力,为地震队提供了高效、高质的可控震源生产施工方式。本文主要讲述VPM系统在复杂电磁干扰条件下的应用情况及初步解决办法。 展开更多
关键词 VPM系统 导航基站 MESH电台 电磁干扰
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Long-term semi-autonomous orbit determination supported by a few ground stations for navigation constellation 被引量:4
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作者 YI Hang XU Bo +1 位作者 GAO YouTao WANG JiaSong 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2011年第7期1342-1353,共12页
In view of the present technology of autonomous orbit determination for navigation satellite constellation(NSC) and the geographical conditions of China,we propose a long-term semi-autonomous orbit determination schem... In view of the present technology of autonomous orbit determination for navigation satellite constellation(NSC) and the geographical conditions of China,we propose a long-term semi-autonomous orbit determination scheme supported by a few ground stations for NSC in this paper.Since the effect of rotation and translation of the entire constellation relative to the inertial reference frame can bring large errors to the autonomous orbit determination using only cross-link range measurement,a few ground stations(such as 1-3) are supposed to construct the connection between the NSC and the ground.Supported by such a few ground stations,the NSC can realize long-term orbit determination called semi-autonomous orbit determination.The simulation results based on the IGS ephemeris indicate that,for a certain degree of measurement errors,the NSC can maintain its semi-autonomous orbit determination in a period of 240 days within 5 meters of URE. 展开更多
关键词 navigation constellation cross-link range measurement semi-autonomous orbit determination a few ground stations
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