雷达

The measurements obtained in polar coordinates system is converted to rectangular coordinates system.

引言在传统的雷达目标跟踪中，常用的滤波算法是卡尔曼滤波算法。

In this paper ,a basic conception of the problem on radar polarimetry is described.

描述了雷达极化问题的基本概念，提出了两类铁氧体全极化器的机制。

As the sophisticated theory coming and electronic technology developing, radar polarimetry has become a indispensable tool, and polarimetric radars have been applied in several fields such as military, remote sensing, agriculture, hydrology and monitor, and so on.

近年来随着理论的不断完善和电子技术的飞速发展，极化雷达发挥着不可替代的作用，在军事、遥感、农业、水利和监测等方面得到广泛的应用。

The main work and contributions accomplished in this dissertation are as follows:(1) The fundamental theory of electromagnetic wave polarimetry in radar, including the polarization representation of EM wave, the scattering coordinate system in polarimetric SAR imaging and the polarimetric scattering description, is presented.

本文的主要工作和贡献如下：(1)介绍了雷达极化的基本理论，包括极化表示以及极化SAR成像中的散射坐标系和极化散射描述。

Hallen type equations combined with almost entire domain polynomial representation of current distribution function are selected to attack the simulation, analysis and comparison of electromagnetic performance of the antenna array under different design parameters.

就高频地波雷达海洋环境监测的一种新颖宽窄波束、软硬件技术相结合的收发共用相控天线阵的设计，选用将Hallen方程与电流分布函数的殆全域多项式展开相结合的矩量法，分析比较了相控天线阵在不同设计参数下的电磁性能，重点分析了互耦的影响以及实施"收发共用"对阻抗匹配的苛刻要求和现有设计在该问题上的技术缺陷，得到了关于该天线阵工程设计的若干结论。

11 P: Unsure of my position, request radar vector.

P：我不能确定位置，请求雷达引导。

And its nuclear reactor will power ion engines and a big science radar.

它用核子反应炉来提供离子引擎及雷达所需的动力

Size. These sets were specialized for tasks such as long range search, interception, navigation and precision bombing.

这类雷达专门用于远程搜索，侦察，导航和精确轰炸。

While computing radar cross section, surfaces of objects were primarily triangulated, which was called prepositive disposal. The length of the edge of the triangle was generally 0.1 wavelength (in general one wavelength is 3cm).

在雷达散射截面计算中，首先需要将物体的表面进行三角剖分，称为前置处理，三角片单元的边长通常为0.1个波长（一般1个波长取3cm）。

But as a special radar it is difficult to analyze and pretreat the data and evaluate the performance of the radar detection.

但是对于一部特定雷达来说，要进行资料分析和预处理以及评价其探测性能仍然比较困难。

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。