某新机垂直机动的最小半径和快转速度

根据某新机飞行人员的要求,对其正飞向上,倒飞向下和垂直位置进行机动的最小半径及其速度、快转速度进行了一系列的计算与分析,从中得出飞机中低空(1000～5000米)进行垂直机动的最佳速度和过载,为某新机垂直机动训练中,提高质量,保证安全提供了可行的理论依据,并在飞行训练中得到了验证。     

基于S3C44b0X服装绘图仪液晶显示开发

服装绘图仪的控制核心采用SAMSUNG公司S3C44b0X处理器,S3C44b0X为一般应用提供了高性价比和高性能的微控制器解决方案。介绍了将S3C44b0X内置LCD控制器进行重新配置,使其能驱动YXD-12864A液晶显示模块,并给出了该控制器与LCD硬件接口方法,经实验验证此方法的正确性。     

国航货运计算机系统的网络设计

介绍了国航货运计算机系统的网络拓朴结构、网络需求和网络设计思想.如何使SITA网络和本地局域网连接,解决SNA/LAN的互联方案.     

基于多线程的VHF地空数据链网关的设计与实现

着重介绍 VHF地空数据链网关设计方案及实现方法。介绍了基于多线程的 VHF地空数据链网关软件结构和实现方法。该系统已成功地应用于中国民航 VHF数据通信网网络监控中心     

利用S变换的X射线脉冲星信号恒虚警率检测算法

针对传统的X射线脉冲星信号检测算法计算量大及在低信噪比下检测性能差的问题,提出了一种结合S变换的恒虚警率检测算法。首先,根据高斯白噪声的S变换域功率谱分布特性对累积信号的时频功率谱进行阀值滤波;然后累加阀值滤波后的信号功率谱作为检测统计量,从理论上对检测统计量的分布特性进行分析,得出检测统计量服从高斯分布,并用蒙特卡罗方法进行了验证。在此基础上,利用检测统计量的概率密度函数计算判决门限,从而实现了恒虚警率检测。理论分析和实验结果表明,本文算法的检测性能优于同类基于高斯分布的恒虚警率检测算法,并且具有较低的复杂度。     

基于DSP的H.264视频编解码器的研究及实现

在深入研究H.264标准的编解码原理和参考目前主流算法的基础上,基于德州仪器(TI)的达芬奇(DaVin-ci)TMS320DM6446平台实现了H.264视频编解码器。详细地叙述了主流的X264编解码算法在DM6446平台上移植和优化的每一步工作。注重于具体工程实现技术的讨论,可为相关领域实际工作提供参考。     

CEmail远程处理方案的设计与实现

ＣＥｍａｉｌ是南京航空航天大学计算机系开发的ＴＣＰ／ＩＰ局域网上的中文电子邮件系统，其远程邮件的收发方式之一，可通过Ｘ．２５公共数据网上的Ｓｐｒｉｎｔｍａｉｌ系统完成。本文介绍了ＣＥ－ｍａｉｌ的远程收发方案，包含用于远程收发的Ｘ．２８通信平台、远程工作站受理、远程工作站代理模块的设计与实现及其实现的关键技术。ＣＥｍａｉｌ远程收发处理方案的设计是以可行、经济、易用为设计原则的     

Space law education in China: Status quo,shortcomings and possible ways out

Space law education has an essential role in the space capacity building of a country because of its importance for human resources development in space law. Comparisons between Canada and China, the European Union and China and the United States of America (USA) and China in space law degree education, course, teaching methodology, institute and practice and communication platform are provided in an attempt to review some issues which exist within the Chinese space law educational system and to seek a better choice for China’s space law education reform. Chinese space law education has achieved noticeable progress over the past two decades. However, it is still limited in comparison to its counterparts in Europe and Northern America. The range of the space law degree education programmes and space-law-related courses is comparatively limited. A gap remains between space law education and practice in China. Chinese space law classes are still dominated by the teacher-centred teaching methodology, although several universities have some new teaching practices. The establishment of seven space law-related research institutes plays an increasingly important role in Chinese space law education, space law and policy research and legal advisory services for the Chinese government and non-governmental sectors. However, these institutes still have a long way to go in comparison with their counterparts in Europe and Northern America. While China has established domestic research platforms for space law communication through international cooperation, it does not provide space law practice platforms for space law education. While international space law does not provide a direct legal foundation for space law education in China, Chinese educational laws can lay a profound legal foundation for Chinese space law education. To promote its national expertise and capacity in space law, based on the three-pillar model and the experiences of its counterparts in North America and Europe, China should adopt a systematic and sustainable regime for its space law education.