雷达

Scattering of radar -wave by flunctuations of atmospheric refractivity is studied in this paper.

研究大气折射率起伏对雷达波的散射时，得到的主要結果有以下两点： 1。

The company main products are reversing radar campaign, anti-theft Series, car refrigerator series, mini-cars such as vacuum cleaners.

目前公司主要产品为倒车雷达系列、防盗器系列、汽车冰箱系列、汽车迷你吸尘器等。

According to the effect of relative permittivity εr on the pulse propagation velocity in lossy dielectric space and the effect on the turnround time of signal between the antenna and the buried objects, it is presented that lossy dielectric space can be transformed into free space and the simulation results abtained from free space can also be amended to lossy dielectric space.

对探地雷达的微波全息成像法进行了分析研究，根据有耗介质空间中的εr 对脉冲传播速度的影响，以及对脉冲在收发天线与目标之间的往返时间的影响指出：可将有耗介质空间转化到自由空间，再将自由空间中的计算结果修正到有耗介质空间。

It also analyses the structure , the testing principle of the radar , the method of measuring distance , relative velocity and azimuth.

文中还研究了该雷达测试系统的测试原理，以及测量车间距离、两车相对速度和前车方位的方法。

Our main product are automobile ignition coil, vehicle GPS system, audio system, astern radar, automobile integrated controller, ABS sensor, New-style window riser and igniter, regulator, ignition coil, relay, flasher for motorcycle and generator.

我们的主要产品有汽车点火线圈，汽车GPS系统，音响系统，倒雷达，汽车综合控制器， ABS的传感器，新型窗口冒口和点火器，调节器，点火线圈，继电器，闪光器摩托车和发电机。

As a kind of imaging radars, synthetic aperture radar improves its resolution by means of moving and emitting pulse repetitiously. The issues about target detection of SAR are often a 憄ost-process?of the SAR imaging.

合成孔径雷达(synthetic aperture radar，简称SAR)通过对地面目标的多次照射来提高方位向上的目标分辨能力，由此使现有的SAR目标检测算法通常是一个基于SAR图像的"后处理"过程。

Deliberate radiation or reradiation of electromagnetic waves so as to impair the usefulness of a specific segment of the radio spectrum that is being used by the enemy for communication or radar.

人为地辐射或反向辐射电磁波，使一段特定的无线电波谱的可用性削弱，而这一波谱段是由敌人的通讯或雷达所使用。

And the feasibility of using responder as secondary radar is discussed.

讨论了应答器用作二次雷达的可行性。

In this paper, by measuring the Doppler spreads and the centerline slopes of the ship from a sequence of sub-images generated with successive short time data, the variations of the resultant effective rotation vector and its vertical component are estimated.

该文通过对数据分段短时成像，估计舰船在一系列子图像中的多普勒频率展宽和船体中心线斜率，获得雷达与舰船之间合成有效转动矢量和垂直转动分量随时间的变化。

Firstly, the equivalent changes of the effective resultant rotation vector and its vertical component with time are estimated by imaging the data in successive partially overlapped intervals and subsequently estimating the Doppler spread and the centerline slope of the ship target shown in each subimage.

该方法首先对回波数据进行分段短时成像，通过估计每幅图中舰船目标在方位向的多普勒频率展宽和船体中心线斜率，获得等效的雷达与舰船之间合成有效转动矢量和其垂直转动分量随时间的变化。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。