查询词典 radar

Direct digital waveform synthesizer is a digital method that the radar signal is generally generated.The error resource of DDWS is presented.The principle that signal is reconstructed in digital-to-analog converters is analyzed in the DDWS structure.

介绍了直接数字波形合成(direct digital waveform synthesizer，DDWS)的误差来源，分析了DDWS结构中其数模转换器信号重构机理，比较研究了DAC信号重构误差对输出信号脉冲压缩结果的影响。

Waveform design and generation is one of the key techniques in the Radar system.

宽带脉冲压缩信号的产生方法和系统设计是雷达中的一项关键技术，线性调频信号是雷达中常用的脉压信号之一。

By using the continuity equation and weak hydrody-namic interaction theory in the relaxation time approximation, the spatial variation of the radar scattering cross-sec-tion has been proved as proportional to the gradient of current velocity.

在浅海海流速度垂直分布廓线为均匀的假定下，由流体连续性方程和弛豫时间近似下流体力学弱相互作用的理论，已证明雷达散射截面的空间变化正比于海流方向上海流速度变化的梯度。

After initially deciding that if Nagasaki were obscured on their arrival they would carry the bomb to Okinawa and dispose of it in the ocean if necessary, the weaponeer Navy Commander Frederick Ashworth decided that a radar approach would be used if the target was obscured.

在最初决定如果长崎在他们到达时模糊不清他们将带着炸弹到冲绳并且在必要时在海洋中解决后，核武器专家海军司令弗雷德里克。阿什沃思决定如果目标模糊不清，将使用雷达探测。

R. C. The conclusions are listed as follows: Firstly, a dynamical weather radar beam blockage correction method was presented.

研究内容和获得的主要结论有：提出了天气雷达波束阻挡的动态订正方法。

Short -time rainstorm ; new generation of weather radar ; speed chart ; echo

短时大暴雨；新一代天气雷达；速度图；回波

This is a weather radar map shows the comparative analysis procedures, the use of C# development, which is our unit...

这是一个气象雷达图的对比分析显示程序，利用C#开发，这是我们单位正在应用的程序！

In the article, we analysised the rainstorm process using conventional information, encryption data, strength ,speed and wind profile data of Doppler radar, discussed the atmospheric circulation system in the westing process of the subtropical high; revealed the different reasons caused two heavy precipitation (more than 10 mm per hour) and the possibility of small and medium-scale system existed, displayed the vertical distribution of the wind field over the stations in the rainstorm process and the close relationship between the transmission., strengthen of the level air-jet and the heavy precipitation, and then proved that the heavy precipitation was caused by the transmission and strengthen of the low-level jet.

利用常规资料，加密观测资料，多普勒雷达强度、速度和风廓线资料等对本过程进行周密细致的分析。探讨了在副热带高压西进过程中与之相配合的大气环流形势和影响系统；揭示了造成两次强降水（1小时大于10 mm以上）的不同原因和中小尺度系统存在的可能性；展示了暴雨过程中测站上空垂直风场的分布特点以及风廓线高低空急流下传和加强与强降水的密切关系，证明了强降水的产生主要由低空急流的下传和加强引起的。

This echo-location in bats is often compared with radar, the principle of whi ch is similar.

蝙蝠 这种回响定位法常拿来和原理与之很相近似的雷达相比。

The purpose of reconnaissance system's information processing is signal recognition,which is also a key step in whole process of radar reconnaissance information processing.

信号识别是侦察系统信号处理的目的，是整个雷达对抗信号处理中关键性的一个环节。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。