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11.
做好新时期高职退伍复学学生思政教育工作有利于促进大学生从军报国,有利于助推退伍生成长成才,有利于强化高职院校学生教育管理.退伍生思政教育面临诸如"边缘化"、缺乏针对性、缺乏联动性等困境,通过发挥社会主义核心价值观的引领作用、发挥学工人员的主导作用、发挥思政课的主渠道作用、发挥课程思政的辅助作用、发挥文化育人的隐性作用,不断提升退伍复学学生思政教育工作的质量和效果. 相似文献
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雷达与ESM相关算法综述 总被引:5,自引:0,他引:5
在比较雷达和ESM(ElectronicSupportMeasurements)这两种传感器特点的基础上,分析了雷达与ESM相关的特点,介绍了统计方法、模糊方法和优化方法等五种雷达与ESH相关算法,并对这些算法进行了评述。 相似文献
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The Ariane transfer vehicle (ATV), an Ariane 5 borne, unmanned propulsion vehicle, is designed to transport the logistics needed to resupply the International Space Station (ISS) and the man tended free flyer (MTFF) step 2 with pressurized and unpressurized cargo and to dispose the waste. The ATV is an expendable vehicle and is disposed of by a safe atmospheric burn up. In accordance with the AR5 schedule it should be operational in 1996 for missions toward ISS and beyond the year 2000 for MTFF 2 missions. The main constituents of the proposed ATV are the modified AR5 third stage L5, an upgraded VEB steering the launcher as well as the ATV and the P/L-adaptor providing mechanical and umbilical links to the payload. The mechanical part of the RVD-kit will be placed on the payload-module, the main RVD sensors are located on the adaptor and the needed computer intelligence will be integrated on the VEB. To minimize the development, and recurring costs, the ATV concept fully complies to the idea of maximum use of existing hardware and software, mainly from the AR5, Hermes and Columbus programs thus minimizing development and recurring costs. The ATV is compatible to ISS, MTFF and OMV and is able to transport logistic modules compatible with NSTS and U.S.-expendable launchers. 相似文献
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The primary objective of the Laser Interferometer Space Antenna (LISA) mission is to detect and observe gravitational waves from massive black holes and galactic binaries in the frequency range 10−4 to 10−1 Hz. This low-frequency range is inaccessible to ground-based interferometers because of the unshieldable background of local gravitational noise and because ground-based interferometers are limited in length to a few km. LISA is an ESA cornerstone mission and recently had a system study (Ref. 1) carried out by a consortium led by Astrium, which confirmed the basic configuration for the payload with only minor changes, and provided detailed concepts for the spacecraft and mission design. The study confirmed the need for a drag-free technology demonstration mission to develop the inertial sensors for LISA, before embarking on the build of the flight sensors. With a technology demonstration flight in 2005, it would be possible to carry out LISA as a joint ESA-NASA mission with a launch by 2010 subject to the funding programmatics. The baseline for LISA is three disc-like spacecraft each of which consist of a science module which carries the laser interferometer payload (two in each science module) and a propulsion module containing an ion drive and the hydrazine thrusters of the AOCS. The propulsion module is used for the transfer from earth escape trajectory provided by the Delta II launch to the operational orbit. Once there the propulsion module is jettisoned to reduce disturbances on the payload. Detailed analysis of thermal and gravitational disturbances, a model of the drag-free control and of the interferometer operation confirm that the strain sensitivity of the interferometer will be achieved. 相似文献
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针对飞行器试验中多目标测量的需求,设计构造了一个遥、外测合一的无线电测量系统.它采用码分多址区分多目标、扩频伪码测距、GPS单星共视定时、多站距离差定位等技术,实现了多目标的遥测、外测.给出了系统的工作原理、设备组成,分析了系统在工程实现中的几个关键技术问题及解决途径,并给出了一些试验结果.试验结果表明,系统的距离差测量精度(标准差)在5m以下,距离差变化率测量精度(标准差)在0.08m/s以下.对飞机进行定位时,定位精度在2m左右,速度精度在0.2m/s左右.该系统已经在飞行器试验中成功完成了多目标的遥、外参数综合测量,填补了我国靶场在这一领域的空白. 相似文献