武装直升机

This dissertation studies the key technique of intelligent mine passive acoustic fuse, according to the demand of...

本文根据反武装直升机智能雷弹研制的需要，深入研究了智能雷弹被动声引信中的几个关键技术。

This dissertation studies the key technique of intelligent mine passive acoustic fuse, according to the demand of the research of weapon against armed helicopter.

本文根据反武装直升机智能雷弹研制的需要，深入研究了智能雷弹被动声引信中的几个关键技术。

According to the characteristics presented by armed helicopters during cruising or searching for ground targets, this paper has established the mean-square deviation stationary random model of helicopter tracks. It is an important method to decorrelate the measure noise by estimating the parameters of the color noise online. Kalman filtering and forecasting have been made with helicopter tracks. The simulated study has been carried out on helicopter tracks under the condition of color noise. It is very difficult to get an accurate and reliable prediction when the data is very limited. The paper make use of the theory of grey system to resolve the problem of prediction of helicopter tracks, establishing the GM model of grey systems and the cumulative residual error model of n degree, then correcting the GM forecast model. In the period of sampling, GM model and residual error model have been established on line to improve prediction precision.

结合武装直升机在巡航或搜索地面目标的特点，给出直升机航迹模型为协方差平稳随机模型，在线估计有色噪声参数，对测量噪声去相关，对直升机航迹进行卡尔曼滤波与预估，最后对有色噪声条件下的航迹进行了仿真研究；在数据非常有限的情况下，准确地预测又很困难，本文提出了用灰色系统理论解决直升机航迹预测问题，建立了灰色系统GM预测模型和n次累加残差模型并对GM预测模型进行修正，在每个采样期间内，实时在线建立GM预测模型和残差模型以提高预测精度。

A real time signal acquisition and processing system for localizing and tracking helicoper with passive acoustic is introduced.

介绍了反武装直升机被动声定位跟踪系统中直升机噪声信号实时采集与处理系统的设计。

The result is that last month the government, under pressure to show it was doing something to fix the shortage of battlefield lift, announced it was ordering 22 new Chinooks from Boeing, an American company, but not a single new Merlin from AW.

结果在上个月，英国政府迫于压力表示政府正在采取措施弥补武装直升机的短缺，并宣布将订购22架美国波音公司的新型奇弩克直升机，来自阿韦公司的默林直升机则一架也不订。

These soldiers rode in the Apache helicopter gunships that were involved in the longest helicopter-borne assault in history.

这些士兵驾驶着Apache武装直升机，他们卷入了历史中长的直升机的的攻击。

These soldiers rodein the Apache helicopter gunships that were involved in the longesthelicopter-borne assault in history.

这些士兵驾驶着Apache武装直升机，他们卷入了历史中长的直升机的的攻击。

Thousands of people have run for their lives in the past two weeks as the army pounded militants strongholds with helicopter gunships and ground troops.

成千上万的人都办了，在过去两个星期他们的生活，军队与武装直升机和敲打地面部队武装分子的据点。

One resident of a village just outside the main city Dagar, said that he has mainly seen helicopter gunships firing on militant positions.

一位居民主要城市外的一个村庄达加尔说，他主要是看到武装直升机对武装分子阵地开火。

If you get water and Apache helicopter gunships, according to the space bar and left ctrl machine guns or missiles can be launched.

如果你获得水上直升机和阿帕奇武装直升机，按空格键和左ctrl就可发射机枪或导弹。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷