摘要
针对卫星在轨相关数据(卫星在轨综合数据)种类繁多,数据量大,查询时效性要求高等特点,对管理卫星在轨综合数据的关键技术进行了研究,提出将卫星在轨综合数据分类处理的方法,即利用遥测数据变化缓慢的特点采取变化存储的方法,压缩遥测数据的存储量,同时图形查询遥测数据时使用特征值提取算法快速完整地绘制遥测曲线;对于计算结果与在轨运行信息,采用数据类型描述的方式实现多类型数据的统一管理,较好地解决了计算结果与在轨运行信息数据管理复杂,数据类型扩展困难等问题。在此基础上,设计并实现了一套卫星在轨综合数据库系统。
There are various kinds of in-orbit satellite data （integrative satellite data）. In view of that the data streams are high and most of these data are inquired in near real time, a strong man- agement strategy is needed to deal with the data. This paper researches the key techniques for satellite data management, proposes a method to classify integrative satellite data. For telemetry, a compression method is given by using its slowly changed characteristic and a character value col- lection algorithm is used for drawing the telemetry data curve when users search the telemetry da- ta. For in-orbit state information, a data type description method is given to manage it. Based on these researches, an integrative satellite database is designed and implemented. The system man- ages the integrative satellite data well in practice.
出处
《航天器工程》
2014年第1期81-85,共5页
Spacecraft Engineering
基金
国家重大航天工程
关键词
卫星在轨综合数据
遥测
特征值
变化存储
integrative in-orbit satellite database
telemetry
character value
variety storage
