To improve the operational effectiveness of portable air defense missile, the influence of infrared jamming on portable air defense missile is discussed.

为了提高便携式地空导弹的作战效能，着重对几种红外诱饵干扰对便携式地空导弹武器系统的影响进行了分析。

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The vibration design of the sensitive equipments on board of a certain multi-purpose sea defense missile was described and the result of ground vibration test was analysed.

本文介绍并分析了某型多用途海防导弹弹上灵敏设备的振动设计及地面振动试验结果。

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It is a new application for DIS (Digital image Stabilization) to the infrared image processing field, in infrared homing seeker of single channel-controlled air defense missile.

在单通道红外寻的防空导弹中采用电子稳像技术进行红外图像的稳像处理，是电子稳像技术一个新的应用领域。

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In two thousand six, Defense Secretary Robert Gates advised President George W.Bush to base a missile defense system in Europe.

VOA: special.2009.09.19

He says that would reduce the need for an American missile-defense system proposed for the Czech Republic and Poland.

VOA: special.2009.03.07

American Defense Secretary Robert Gates says the Iranian missile will be able to travel up to two thousand five hundred kilometers.

VOA: special.2009.05.23

Instead of permanently decommissioning it, the Defense Missile Agency placed it in a non-operational state.

CNN: U.S. to beef up missile defense against North Korea, Iran

The question has come up as to whether or not missile defense, our missile defense activity, is in any way jeopardized by this treaty.

WHITEHOUSE: President Obama Meets with General Colin Powell

One Pentagon official said that since early January, a team including 200 industry experts and scientists had worked furiously to modify the Aegis air-defense missile system so it could shoot down the satellite.

CNN: Navy missile hits dying spy satellite, says Pentagon