雷达

Radar sets generally employ huge antennas to produce narrow beams in abundance the alike way as a search-light reflector.

通常雷达采用大型天线以产生狭窄波束，其办法基本功上与探照灯反射镜相似。

In this paper, some practical and advanced geophysical methods are introduced. These methods include resistivity image profiling, 3D reflection seismics, borehole radar, borehole camera, acoustic televiewer log, dipmeter log and cross-hole log. The main purpose of this paper is to briefly introduce their operating principles and possible applications to geotechnical engineers for references.

本文列举数项实用且先进的地球物理技术，包括：地电阻影像剖面法、三维反射震测法、孔内雷达探测技术、孔内摄影法、超音波电视井测、倾角井测及跨孔井测等，就其施测原理与可能的应用方向做一介绍，期能提供大地工程调查规划时的参考。

It is sure that seismic radar will greatly promote the development of seismology and its observation.

可以预期，地震雷达的发展将会对观测地震学带来全面的影响。

Keywords polarization;polarimetric SAR;classification;projection index;wavelet-kernel estimation;Bootstrap estimation;sequential projection pursuit cluster model;projection pursuit wavelet learning network;mix

Article From 西北工业大学；计算机科学与技术博士论文 2007年度极化；极化合成孔径雷达；分类；投影指标；小波估计； Bootstrap估计；序列投影寻踪聚类模型；投影寻踪子波学习网络；混合Wishart模型

Firstly, by using asynchronous data dealing way of mapping measurements, point track of the multi-sensor measurements is composed. Secondly, SSR is used to modify the height information of the enemy target adaptively. Finally, by using the unscented JPDA algorithm, the sequential filtering fusion of asynchronous sampling measurements can be realized.

该算法首先通过测量值映射的异步数据处理方法对多传感器数据进行点迹的合成，然后通过二次雷达对敌方目标的高度信息进行自适应修正，最后用无味JPDA算法对按序到来的异步采样量测进行顺序滤波融合。

Phase shifter is widely applied in the system of communication and radar.

移相器在通信、雷达等系统中有着广泛的应用。

It further describes the performance and cost of the phase shifter influence greatly the performance and cost of the radar.

进而阐述了移相器的性能和成本极大地影响到雷达的性能和成本。

The result shows that the image radar can meet the operational requirements of a shooting range.

结果表明，成像雷达能满足靶场的使用要求。

So it is an important direction that non-atmosphere window millimeter wave short range radar is applied in the fuse.

所以将非大气窗口毫米波近程雷达应用于引信是一个十分重要的方向。

Gives an analysis of the structure and characteristics of the "Shrike" anti-radiation missile warhead.

分析了反雷达导弹战斗部的结构和性能。

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。