介绍了基于USB2.0技术的高频地波雷达接收机系统。
The HF ground wave radar receiver system based on USB2.0 technique is introduced.
高频地波雷达是对海面、低空目标进行超视距探测的重要手段。
High frequency surface wave radar is an important tool of the over horizon detection of sea and low-altitude targets.
他们看看，能在湖里将石子掷多远，水面荡起地波纹能有多长。
They see how far they can toss a rock in the lake and watch the endless ripples.
高频地波超视距雷达在舰载条件下探测舰船目标面临着诸多挑战。
For HF ground wave OTH radar to detect ship targets in the shipboard environment is faced with a range of technical challenges.
高度估计对于高频地波雷获取三维信息、提高预警能力很有意义。
Estimation of target altitude is quite significant to achieving 3d information and increasing early-warning ability for HF surface wave radar (HFSWR).
高频地波超视距雷达在舰载条件下探测舰船目标面临着诸多挑战。
It is high loss of rate in over-the-horizon radar on the condition of low detection probability.
主要论述了天波、地波、微波超视距雷达的工作机理及其发展趋势。
The operational principles and the development tendencies of sky-wave, ground-wave, and microwave OTH radars are also presented.
另外，国内利率或许也会剧烈地波动，这将威胁到中央银行的独立性。
For another, domestic interests may protest fiercely, threatening central bank independence.
作为高频频地波雷达的配套器件，应答器的工作方式和雷达密切相关。
As a device match of the high frequency ground wave radar, the responder 'working is correlating with the radar.
汇率会不时地波动，有时一美元值十二墨西哥比索，有时只值八比索。
Sometimes a United States dollar is worth twelve pesos in Mexico.
软件工具相当快速地波动，厂商每年发布主要的新更新，有时候甚至更快。
Software tools churn pretty quickly, with vendors issuing major new updates every year or so, sometimes even faster.
英国球星鲁尼预计今日在意大利旅游胜地波托·菲诺和女友科琳举行婚礼。
UK football star Wayne Rooney and his girlfriend Coleen McLoughlin are expected to tie the knot today in the Italian town of Portofino, a famous holiday resort.
上学期留学生的考试成绩一直无规律地波动，在教学改革后成绩有明显上升。
Last semester the scores of the foreign students fluctuated irregularly, but showed an obvious increase after the reform in teaching.
本文研究了一种新的高频地波超视距雷达目标距离以及方位角超分辨问题。
Super resolution for target range and azimuth Angle of a novel bistatic HF-Surface Wave Radar (HF-SWR) is investigated.
但当缩进比过大时，气液之间的相互作用会使得液体喷注压降明显地波动。
However, with too large RR, the liquid injecting drop vibrates owing to the interaction of between and liquid phases.
由于工作在高频段，高频地波超视距雷达的角分辨力较差，尤其是当阵长受限时。
Owing to the decametric wavelength, the angular resolution of High Frequency Surface Wave OTH Radar (HF SWOTHR) is usually coarse especially when dimensions of antenna array are restricted.
增大探测距离、快速精确跟踪是高频地波雷达探测飞行小目标所面临的主要困难。
Increase of detection range and fast precision tracking are main difficulties in weak aerial target detection for High Frequency Surface Wave Radar (HFSWR).
他们接到的命令是应付伊拉克、索马里、海地波斯尼亚、俄罗斯和中东和避免新危机。
Their orders were to cope with Iraq, Somalia, Haiti, Bosnia, Russia and the Middle East and to prevent new crises.
这样，整体的音调似乎在细致地波动，就像一些铜钟被撞击之后所发出的美妙声音。
Sometimes the overall pitch seemed to go slightly up and down, somewhat the way the pitch of certain bells seems to rise and fall after they have been struck.
高频地波雷达近海监测和海态遥感技术是一种利用海洋回波多普勒谱反演海态参数的方法。
High frequency ground wave radar for near ocean inspection and ocean remote sensor is a method that use ocean echo wave Dopier spectrum to deduce the parameters of ocean situation.
近三十年来，高频地波对海探测雷达因其本身所特有的优点而引起了许多国家的高度重视。
During the near three decades, high - frequency ground wave radar detecting for sea has been regarded for its high performance by many countries.
高频地波超视距雷达可以实现对海洋环境状态(如风、浪、流等海洋动力学参数)的监测。
The high frequency ground wave over-the-horizon radar can be adopted in detecting ocean state such as wind, ocean waves and ocean currents.
软件高频雷达也是一部在岸边使用的高频地波超视距雷达，是国家211学科建设项目之一。
High frequency radar is also a high frequency ground wave super resolution radar used on the seaside, and meantime it is one of projects of National 211 for building subject.
分析了高频地波雷达的时序要求，采用大规模可编程逻辑器件CPLD实现了专用定时芯片。
The time-sequence requirements for the radar are analysed, and a programmable timer is realized by a CPLD.
地波传播受天气的影响较小，比较稳定，信道参数基本上不随时间的变化而变化，是恒参信道。
The transmission of the earth wave is stable, hardly influenced by climate and its channel parameter does not change with time basically, it is Constant Parameter Channel.
他们的研究结果可能影响我们的理解对地波怎样通过地球内部(科学繁殖317 1740)。
Their findings could affect our understanding of how seismic waves propagate through the Earth's interior (Science 317 1740).
针对高频地波雷达回波信号中的电离层杂波，提出了利用时频分析与特征值分解抑制杂波的方法。
To suppress ionospheric clutter in the echo signal of high frequency surface wave radar (HFSWR), a method to suppress clutter based on time-frequency analysis and eigenvalue decomposition is proposed.
海面低速目标的非均匀运动和射频瞬态干扰引起的多普勒谱展宽影响高频地波雷达检测目标的准确性。
The Doppler spectral broadening due to nonstationary movement of target and radio-frequency clutter will decrease the veracity of target detection by high frequency ground wave (HFGW) radar.
英国球迷又将象以往一样随着这支球队的输赢，情绪剧烈地波动着，有时候歇斯底里，有时候喜极而泣。
As before, the England fans will inevitably go through an emotional turbulence of hysteria and tearful exhilaration at the team's ups and downs.
英国球迷又将象以往一样随着这支球队的输赢，情绪剧烈地波动着，有时候歇斯底里，有时候喜极而泣。
As before, the England fans will inevitably go through an emotional turbulence of hysteria and tearful exhilaration at the team's ups and downs.
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