雷达

Small aspect change will lead to a big change of the complex amplitude, since, although the variation of the range of each scatterer to radar is very small, it is still large enough compared to the small wavelength and may cause a big phase change.

当视角有微小变化时，虽然各散射点到雷达的距离变化并不大，但相对于微波波长，其相位差的变化相当大，从而使各分辨单元到复振幅有大的起伏，即一维距离像的方向敏感性十分敏感。

The numerical results show that the laser DSS of the moving spherical particle is tightly connected with its speed and scattering zenith angle.

结果表明：运动介质球粒子的激光雷达微分散射截面与粒子的速度和散射天顶角有关，当粒子做低速运动时，由于运动对粒子的激光散射产生的影响可以忽略。

The scattering theory based on the equivalent vibrating scattering center and the mathematical model of the modulation are introduced.

在数学建模的基础上，论证了选取雷达回波的机械振动调制频率序列作为目标识别特征的可行性。

Also at last year's meeting, former US Secretary of State Condoleezza Rice formalized plans to sign a treaty on installing a US radar base in the Czech Republic with Czech Foreign Minister Karel Schwarzenberg.

此外，在去年的一次会议上，美国前国务卿赖斯正式计划签署条约，建立一个美国雷达基地，在捷克共和国与捷克外长卡雷尔施瓦岑贝格。

The OOW shall keep the following in mind when he/she utilizes radars and/or ARPA for watchkeeping duty during at sea or in port.

值班驾驶员在海上或港内用雷达/ARPA值班时要牢记以下几点。

The virtual instrument combined with Ku-Band Microwave Doppler phase detect radar is used for the sea wave height measurement according to the Doppler frequency of the sea wave echo and stores the data.

结合Ku波段多普勒相检雷达，运用虚拟仪器根据海浪回波的多普勒频率来判断海浪变化，测出海浪波高存储数据。

Interaction between current and underwater bottom topography modulates roughness of the sea sur-face, which in turn yields variation of the radar scattering echo.

海流与海底地形的相互作用导致了海表面的粗糙起伏，从而引起对海面观测的雷达散射截面的变化。

Radar simulator takes the important role in seafarer training, assessment of competence, etc.

雷达模拟器在海员培训和适任评估中起着重要的作用。

This paper introduces the application of integrated geophysical investigation, including high precision magnetic, multielectrode method and GPR , to systematically detect a radioactive material source sealed in lead container stored in a chamber buried underground,which has been missed.

采用综合地球物理勘查技术，包括高精度磁测、高密度电法和地质雷达对某处遗留于地下的铅封放射源进行了系统探查，对所获得的各类异常数据进行了分析处理，并指出了放射源所在的具体空间位置。

Radar sets generally employ large antennas to produce narrow beams in much the same way as a search-light reflector.

通常雷达采用大型天线以产生狭窄波束，其方法基本上与探照灯反射镜相似。

At the rear was an innovative combination transaxle with the gearbox, clutch, differential, and inboard-mounted drum brakes.

在后面是与变速箱，离合器，差的创新结合变速，和内侧安装鼓式制动器。

For more people can apprecaite and have the master work, there is reproduction painting appears in the market, the large various selection of paint,the high saturation of color plus the plentiful sfumato, to make the reproduction perfect copy and detail as original painting, so as to meet the requirment of amateurs who love art paintings,they do not need to pay high price to get classical paintings.

颜料色域广，色彩饱和度高，色彩层次丰富，图像色彩还原真实，能完美的复制原作，满足艺术爱好者欣赏，艺术爱好者们不用支付昂贵的价格就能拥有经典油画。