多目标优化算法标准测试函数寻优研究

多目标优化问题在各种领域中日益展现出举足轻重的地位。该文对6种多目标优化算法进行了测试,选择了四种不同性质的测试函数,安排了12组实验,从实验数据可以得出,NSGA-III算法在多目标优化问题中具有很好的寻优效果,IBEA算法在单目标优化问题或者是多目标问题中需要观测单个变量时能起到很好的寻优效果,CMAES算法在高值域多目标优化中能起到很好的优化作用。

高分辨遥感综合定标技术系统的研发助推我国遥感产业进入发展新阶段

随着定量遥感信息技术的快速发展,对遥感数据质量检测与评估提出了迫切的应用需求。本研究攻克了宽动态高均匀固定人工靶标技术、自主辐射定标技术、高分辨率微波图像分辨率在轨检测技术等瓶颈问题,构建了涵盖地面标准测试目标系统、地面测量技术系统、测试数据处理系统在内的高分辨遥感综合定标技术系统,建成了国际上系统化程度最高、综合测试功能最强、适用范围最广的航空航天共用高分辨遥感综合定标场。该技术系统已用于多型国产新型遥感载荷的严格航空校飞以及多个系列国内外高分辨率遥感卫星的在轨定标与性能评测,在提升我国遥感技术社会经济效益转化质量和回报效率等方面发挥了重要作用。

Electromagnetic Compatibility Technology of Electric Vehicles and Its Development Trend

The electromagnetic compatibility of electric vehicles is not only the important technology issue in researches,development and industrialization of electric vehicles,but also the key research area of ISO.In this paper,both national and international standards of electromagnetic compatibility of electric vehicles are analyzed;it is also suggested that our standards of electromagnetic compatibility of electric vehicles be improved from several aspects such as testing items,test procedures,limit value,etc.The electromagnetic environment of electric vehicles is analyzed in terms of interfering sources,providing the solutions to electromagnetic compatibility and measures of reducing electromagnetic interference.Advanced equipments introduced into Chinese electromagnetic compatibility testing laboratories accelerate the pace of the researches on related technologies and standards;China will develop the standards system which covers from the complete electric vehicle to the key components,promote the technology improvement and industrialization work of Chinese electric vehicles,transform the latest achievements and advanced experiences of Chinese electric vehicles industry to the related standards and contribute the development of international standards.