Among the guidance principles of the air-to-ground missile, the proportional guidance method and the direct guidance method have their respective advantages and disadvantages.

在空地导弹的导引律中，比例导引法与直接导引法各有优缺点。

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In this paper, some methods to analyze troops demand in ground-to-air missile operational disposition are presented systematically in different points of view for the first time.

首次从不同角度系统地提出了地空导弹兵作战部署兵力需求分析方法。

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It offers a good reference for further research on data structure and form of CAD integrated engineering of ground-to-air missile to draw up corresponding standards and norms.

对进一步研究地空导弹CAD一体化工程中数据结构和格式，进而制定相应标准、规范，有较好的参考价值。

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For the JAGM contract, Lockheed provides a 27-month technology development program that includes design, test and demonstration of joint air-to-ground missile system that significantly enhances warfighters operational flexibility and combat effectiveness.

FORBES: Lockheed's Flurry Of New Contracts Provides Short Term Support

The contracts received in the past month range from providing air-to-ground missiles and missile defense systems to light tactical vehicles that can transport troops safely through combat zones.

FORBES: Lockheed's Flurry Of New Contracts Provides Short Term Support

Targets selected by the United States since the air operation began Sunday have included air defense facilities, ground-to-air missile sites, and command and control facilities of Afghanistan's ruling Taliban and the al Qaeda terror network.

CNN: President notifies Congress about troop deployment