SIGINT(Signal Intelligence) satellite is used to detect, intercept a nd locate electromagnetic(EM) signals radiated by systems such as ground radar, communication and TT&C systems.

信号情报侦察卫星用于侦收地面雷达、通信和测控等系统所辐射的电磁信号并对其 定位，是航天侦察的重要手段。

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And a storage management architecture of satellite ground application system based on C-ILM is implemented.

基于该模型，建立了一个卫星地面应用系统的存储管理体系架构。

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The role of ground-based C-band pulse tracking radar(CBPTR) in manned space flight is of much concern.

地面C 波段脉冲跟踪测量雷达（CBPTR）在载人航天中的作用是一个较为令人关注的问题。

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The Seawolf submarine, the C-17 transport aircraft, several different air-to-ground and air-to-air missiles are in the cross-hairs.

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