| 1. | Variable structure attitude control of a large flexible satellite platform
大型柔性卫星平台的变结构姿态控制 |
| 2. | For ka - band communication antenna , several classes of different satellite weight were considered and the critic first frequency of antenna system was given
为满足ka频段通讯天线的指向精度指标，文中针对不同质量的卫星平台，计算了对天线系统的最小刚度要求。 |
| 3. | Infrared imager ’ s mass and the structure dimensions are strictly restricted by the satellite platform , so infrared imager mechanical structure must be packed , agile and firm
由于所搭载的卫星平台对红外成像仪质量和结构尺寸有严格的限制,红外成像仪必须做到结构紧凑,轻巧可靠。 |
| 4. | Next , the characteristics of the user satellites complex control system is that the high accuracy antenna pointing control is realized on the basis of ensuring the high accuracy attitude stabilization control of the satellite body
3 .用户星复合控制系统的特点是在保证卫星平台高精度姿态稳定控制的前提下,实现星间链路天线的高精度指向控制。 |
| 5. | The sliding mode variable - structure controller basing attitude error quaternion and the sliding mode variable - structure controller basing adaptive learning on rbf neural network , three learning arithmetics of rbf neural network is emphasized
针对卫星平台分别设计了基于姿态误差四元数的滑模变结构控制器和基于rbf神经网络上界自适应学习的滑模控制器。 |
| 6. | The topics are as follows : first , the sources and kinds of vibration in optical intersatellite communication are discussed , and base on actual vibration spectrum measured on the communication satellites , some rules are summarized
具体工作包括:首先,探讨了星间光通信中卫星平台振动的来源与种类,研究了国外几颗光通信卫星上实测的振动光谱,总结出振动所遵循的几个规律。 |
| 7. | Early warning system of missiles is an real - time infrared reconnaissance camera based on satellite platform , it can simutaneously reconnoiter , discriminate and track the enemy missile , then obtain the information about the missile ’ s flight parameter
本文研究的导弹预警系统是基于卫星平台的红外实时传输侦察相机设备,它可以实时侦察、辨别、跟踪敌方飞行导弹,在短时间内获取导弹飞行资料。 |
| 8. | Built on hughes network s direcpc satellite platform provided by chinacast , teacher . com . cn also draws on the internet and networking strengths of sina . com , as well as the systems integration and software competencies of tvh
继续教育网采用双威网络提供的休斯公司direcpc卫星平台，结合新浪网地面互联网络平台的优势，并利用宏昌科技在系统集成及软件开发上的力量，成功建立了目前在国内最先进的远程教育平台。 |
| 9. | This paper takes hj - 1b satellite and onboard infrared camera scanning mirror as research objects . the influences on respective motion performance caused by the dynamic interactions between them are evaluated . the emphasis is put on the influence of satellite platform ' s attitude motion upon infrared camera scanning mirror ' s continuous scanning motion
本文以hj - 1b卫星和其上的红外相机扫描镜为研究对象,分析两者之间的动力学耦合对各自运动特性的影响情况,并着重分析了卫星平台姿态振动对红外相机扫描机构转动的影响。 |
| 10. | The ministry of labour and social security has therefore initiated discussions with chinacast in the lead up to the signing of an agreement in december 2002 . it is agreed that chinacast would establish 16 broadcast stations in cooperation with local vocational training institutes , and the vocational training content developed by the ministry would be delivered to the 8 provinces on hughes network s direcpc satellite platform provided by chinacast
劳保部为解决西部培训资源不足，于二零零二年十二月与chinacast达成合作协议，在八个省区选择16个职业培训机构，建立远程培训广播站点，由chinacast提供美国休斯公司的direcpc卫星平台，利用宽频互动传输渠道，将劳保部中国就业技术指导中心的课程内容，以便捷经济的方式向整个西部放送。 |
