Block
(1) A biennial increment of the Ballistic Missile Defense System that provides an integrated set of capabilities which has been rigorously tested as part of the BMDS Test-bed and assessed to adequately characterize its military utility. Once tested, elements and components are available for limited procurement, transition to production, or for emergency deployment as directed. These “off- ramps” may occur at any time during the Block Cycle to support timely execution of these transition or deployment decisions.
The configuration for each Block is drawn from the following sources:
- Theprior BMDS Block;
- BMDSelements, components, technologies, and concepts;
- BMDSBattle Management, Command, Control, and Communications
(BMC2/C) specifications and products;
- Externallymanaged systems, elements, or technologies (e.g., DSP, GCCS, MILSTAR, etc).
Each successive Block provides increasing levels of capability to counter Ballistic Missiles of all ranges and complexity. (MDA Lexicon)
(2) This term is used to designate a portion of a multi-message packet that is dedicated to a message contained within the packet.
【友情提示】
（1）请先注册或登录后再下载附件。
（2）请使用电脑PC/Mac桌面浏览器下载附件，以获得最佳兼容性。推荐使用Chrome。
（3）如使用手机/平板自带浏览器访问，
请先下载、然后在本机存储中打开文件，附件不支持在线预览、显示或播放。
