对电子信息类专业中开展课程思政的必要性进行了分析,从学院顶层提出了"一体两翼三融合四统一"的课程思政育人体系架构,在电子信息类专业进行了探索和实践,并调查了学生对于课程思政的理解认识情况.结果表明,84.5％学生认为课程思政能促进个人发展.将思政元素和专业知识的有机巧妙融合,能够实现教书育人相统一.

德国高等工程教育毕业生高就业率及德国先进的工业生产水平与其高等工程教育培养方案紧密相关.德累斯顿工业大学高等工程教育培养方案的培养目标、制定策略及实施方案,在工业界参与、专业课教学、工程实践等方面有值得借鉴的经验.

留学生教育是我国高等教育发展不可阻挡的潮流,也是促进教育国际化的有效途径.本文通过对通信工程专业留学生班开设全英语“数字电子技术”课程的教学实践,探讨了留学生课程的教学方法、实施措施以及教学效果.本文最后提出了进一步思考的问题.

Engineering education for international students in China has strategic significance for China to become an education power which embraces world-class higher education.It,however,is faced with challenges in training objective and teaching system,teaching methods and teaching conditions,teaching teams and its management,etc.After seven years of practice,electronic and information engineering of Huazhong University of Science and Technology has achieved fruitful results and has accumulated cherished experience in targeting and the building of teams,teaching methods and the building of environment and so on.In order to develop education of engineering for international students coming to China,the following core elements shall be considered: setting a good goal,enhancing the quality of local teachers,and improving teaching methods and teaching surroundings based on characteristics of overseas students and so on.

According to the teaching practice,the teaching steps and arrangements of hardware course design are developed by the way of electronic design competition with the support of technology platform from the famous semiconductor companies in the world.And the necessity of developing some design projects on extendable space is discussed through introducing the waveform generator project and its various implementations.The result shows that this method has important effect on cultivating students' abilities of autonomous learning,analyzing,practicing as well as their awareness of innovation and cooperation.Meanwhile,this method can also be used as a reference for other practical teaching.

电子技术课程设计是电类专业本科教学中的一个重要组成部分。根据教学实践,总结了与企业合作开展竞赛式课程设计的教学方法和实施步骤。实践结果表明,这种形式的课程设计极大地调动了学生的学习兴趣,对培养学生的自学能力、分析能力、实践能力、创新意识和协作精神效果显著。同时该方法对其他实践教学也具有一定的借鉴作用。

The characteristics of satellite regular movements and the regular arrays of inter satellite links(ISL) were analyzed.A new optimal path routing algorithm based on division of two phases(OPRA-DTP) is presented.In this algorithm,routing choice was divided into two phrases: static routing strategy phrase and online routing correction phrase.In the first phrase,satellite networks′ topology variation is shielded by introducing logic nodes,and routing choice rules of the shortest path at the least hops are given with not considering network flow distribution;while in the second phrase the information of network flow distribution is supervised in real time,and once the information varies enough acutely,routing choice is corrected based on the results in the first phrase,which could maximize the throughout of network with certain quality of service(QoS).The validity of OPRA-DTP in decreasing computing complexity and routing spending was verified through simulation results.

This paper presents a shrinking shortest path routing algorithm(SSPRA), making use of the characteristics of satellites' regular movement and regular array of Inter Satellite Links(ISL). SSPRA divides routing choice into two phrases: direction estimation phrase and direction decision phrase,according to the principle of shortest path under least hops. In the first phrase, two possible forwarding directions are given because their path hops are least; while in the second phrase the nodes paths possibly pass through are partitioned based on the results of the first phrase. Preferential forwarding direction is decided by searching the possible nodes. SSPRA was compared with Dijkstra algorithm at computation amount and efficiency through simulation. The result is that computation amount of SSPRA is greatly less than that of Dijkstra algorithm because SSPRA reduces search range, at the same time efficiency of two algorithms is almostly uniform.

This paper introduces a methodology to design a set of satellite constellations,called the Flower Constellations,which are generally characterized by repeatable ground tracks and a suitable phasing mechanism.Based on relationship with the Flower Constellation model parameters and the satellite orbit parameters,we undertook the task of creating a C application that would simplify the task of design and study of Flower Constellations.With Satellite Tool Kit,a new Flower constellation,providing navigation for a GEO satellite,is here proposed,designed,and compared with the existing GPS.Finally,the possibility of many potential applications with Flower Constellations is discussed.

A novel regional satellite navigation system design method is proposed based on the Flower constellation design scheme. A navigation Flower constellation (NFC) included 2 Flower constellations. Through the Flower constellation model, the six orbital parameters of each satellite are designed concretely. The deployment of the NFC is progressive, starting with eight satellites, more affordable capacity that can be increased in stages as necessary by launching additional six satellites. The simulation of the geometrical dilution of precision (GDOP) performance for china showed that the mean GDOP value of NFC is 2.113. Moreover, GDOP performance of NFC was compared with GPS, GLONASS, Galileo and some other navigation constellations proposed by national study groups. The results demonstrated that NFC was same with Galileo and was much better than the other satellite navigation systems. Therefore, the high navigation precision and economic performance proved that the regional satellite navigation system design method based on the Flower constellation design scheme was effective.

分析和确定了Flower星座的优化参数,从参数编码、适应度评价和算法流程设计三个方面进行讨论,给出了Flower星座的遗传算法优化模型.利用自行开发的卫星星座仿真软件SatSim (satellite simulation)和STK (satellite tool kit)工具包,设计了适合中国区域通信的三个Flower星座并进行了性能分析.仿真结果表明,4和5颗星的星座在最小仰角10°的条件下对中国的平均覆盖率分别为97.26 %和99.24 %;6颗星的星座在最小仰角15°的条件下对中国的平均覆盖率为99.88 %,基本实现对中国的连续覆盖,可以满足卫星移动通信的需求.

The architecture of satellite communication networks based on GEO/LEO constellations is presented considering the optimizationof network management.Management subnet and service subnet are separate physically in this architecture,which makes centralized routing strategy more adapted than that in terrestrial networks.In order to strengthen the reliability of the architecture,spare routing strategy decreasing computation load is constituted making use of the characteristics of satellites’ regular movement and regular array of Inter Satellite Links(ISL).At last the performances of two routing strategies are validated through simulations.

本文介绍了一种红外焦平面数据采集系统的设计与实现,该系统用于对非致冷红外焦平面阵列的输出信号进行采集。系统使用FPGA作为核心CPU,控制各个模块,完成信号AD采集,FIFO缓存,异步串口通信等功能。该系统稳定可靠,通用性强,已在多个红外焦平面采集系统中得到应用。

Focused on regional image surveillance,a novel surveillance satellite constellation design method based on the GA (genetic algorithm) is proposed.Through the GA model,the orbital elements of each satellite such as altitude,inclination,RAAN and mean anomaly are optimized.The optimal simulation of a constellation with 3 LEO satellites was made.The result shows that the optimized constellation can provide excellent performance of maximum access time interval in specified target region and have definite capability of global surveillance and reconnaissance.

Focused on regional reconnaissance, a novel reconnaissance satellite constellation design method based on the GA (genetic algorithm) is proposed in this paper. Through the GA module, the orbital parameters of satellite such as inclination, RAAN and mean anomaly are optimized. The interactions between orbit altitude and the maximum revisit time are analyzed. The optimized simulation of a 3 LEO satellites constellation for 7 different orbit altitudes is conducted. The results show that the optimized constellation could provide a great maximum revisit time performance for a certain target region and had a good capability for global surveillance and reconnaissance.

购物车功能是电子商务网站中的一个重要功能组成部分.提供了一种可以在低成本环境中行之有效的实现方法.

一个健壮的、业务扩展能力良好的电子商务网站,采用三层客户 /服务器体系结构是一种选择.介绍了一种实际可行的实现方案.并给出了性能提升数据的比较方法.