It is studied the problem of tracking a ballistic object in reentry phase from radar observations.

研究了通过雷达观测跟踪重返大气层阶段的弹道目标问题。

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Design a ballistic limit equation scheme is the kernel part of the research and the main body of the thesis.

设计一个得到撞击极限方程的实验方案是本文主要研究内容，本文按照下述内容展开。

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A key component of an air-launched missile defense system demonstrated its ability to acquire and track a ballistic missile target in the boost phase, according to Raytheon.

日前，一种空射导弹防御系统的关键组成部分成功演示了对助推段弹道导弹的截获与跟踪能力。

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The Security Council resolution was put in place after North Korea' first nuclear weapons test and the launch of a ballistic missile.

VOA: standard.2009.04.03

Japan's defense minister, Yasukazu Hamada,said whether Pyongyang actually launches a satellite or a ballistic missile the country's military force is prepared to protect the nation.

VOA: standard.2009.04.03

South Korea,Japan, and the United States say the launch will be a provocative attempt to advance North Korea's ability to deliver warheads, via ballistic missiles.

VOA: standard.2009.04.01

On transporter erector-launchers, they simply erect it, fire off a ballistic missile, put it down, cover it up.

CENTERFORSECURITYPOLICY: Get On With It: Time To Deploy Sea-Based Missile Defenses

Sergeant Lounge was carrying his AR15 and a ballistic shield from his cruiser.

WHITEHOUSE: Background on Medal of Valor Ceremony

The United States demonstrated the capability to launch a ballistic missile from a surface ship nearly forty years ago.

CENTERFORSECURITYPOLICY: Serious about defending America