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Both sides in the Second World War relied heavily on these devices, under such codenames as Asdic and Sonar, as well as Radar or RDF, which uses radio echoes rather than sound echoes.

二战中的交战双方都十分依赖这些仪器,诸如产品代号为早期潜艇探索声纳 ASDIC和声纳 Sonar还有雷达或无线电测向器 RDF,他们都使用无线电回波而不是声波回波。

Manual radio direction finder ,, electronic compass direction finder , References.

手动式无线电测向仪,,电子罗盘测向仪,参考资料。

Finally, by analyzing the result of measuring of this system in contrast with GPS, this paper conculdes that the system can meet the requirement of direction finder.

无线电测向结果与GPS接收机测向结果对比可知,系统满足测向要求。

Master's thesis; students Jing Zhao was named "Top Ten army SBQP model "; students Xie Kang-min was the first National Youth Competition Gold Award century style television; students Dinghai Yuan, and should receive the second session of the national youth style TV contest" Best vitality of the Year "and" Outstanding Contribution Award "; students receive汤卉The first National Youth Science and Technology Innovation Award; 18 entries Wins National Undergraduate Mathematical Contest in Modeling and e-Design Competition first prize; In recent years, the National Competition in radio direction finder won 12 gold medals on behalf of the state in 2004 to the Czech Republic participated in the radio direction finder international championships, and achieved first place in the Asia-Pacific region.

戚文峰、张传定、范淑琴三位博士研究生的学位论文被评为全国优秀博士学位论文,8篇学位论文被评为军队优秀博士、硕士学位论文;学员赵菁被评为"全军十大学习成才标兵";学员谢康敏获首届全国青年世纪风采电视大赛金奖;学员袁佳和应定海分别获得第二届全国青年时代风采电视大赛"最佳活力奖"和"突出贡献奖";学员汤卉获得首届全国青少年科技创新奖;18个参赛队获全国大学生数学建模竞赛和电子设计大赛一等奖;近年来,在全国无线电测向大赛中获得12块金牌,2004年代表国家赴捷克参加了国际无线电测向锦标赛,取得亚太地区第一名。

For the shape and size of the measure antenna array affect on measure precision and the resolving power.

形状与尺寸选择的合理与否,将直接影响测向的精度与测向分辨率。

Considering the technology difficulty in satisfying direction finding accuracy and resolving angle ambiguity,the same time in defined space for ultra-band antiradiation missile seeker,theories of direction finding by phase interferometer and resolving angle ambiguity by double base line are simply introduced.

针对反辐射导弹导引头超宽带测向系统中,在较小的体积内难以同时保证测向精度和解模糊的技术难题,介绍了相位干涉仪测向原理和参差双基线解模糊方法及其原理,并结合反辐射导弹导引头的具体应用情况,提出了一种基于虚拟基线解模糊方法。

We introduce the primary problems of the UCA output data model and its beamspace processing.

本文从超分辨率测向算法方面对均匀圆阵列天线的测向技术进行研究。

The equation of ESCDAC is presented. Secondly, Based on this equation and the independent characteristic of observation valves, the ESR of the azimuth measurement error is presented by full - difference of the measurement equation which acts as the precision of ESCDAC.

然后以该方程为基础,根据该方程中各个观测量相互独立的特点,方位测量误差的均方根值可由测向方程的全微分求得,并将其作为电扫描恒差比幅测向的精度,由该精度公式可以看出,电扫描恒差比幅测向有很高的精度,并且在不同的角度上,其精度保持稳定。

MUSIC algorithm is the basis of the method of direction finding with space spectrum estimation.

MUSIC算法是空间谱估计测向的基础,它是通过天线阵对被测信号的响应矩阵来解算信号方向的。

In order to gather rapidly when GPS is forbidden,a high-performance direction finding system is needed,and key part of the system is direction-finding receiver.

为了实现空降兵在禁用GPS条件下的快速集结,需要一种高性能的测向系统,接收机是测向系统的关键部分。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力