这些精明的目标发现间谍卫星（有可预见的轨道）位临上空时，能够知道如何隐蔽自己。
One theory is that it is a spy plane, designed to catch savvy targets that know how to go to ground when spy satellites—which have predictable orbits—are overhead.
文章提出了一种基于相干混沌移位键控信号的卫星隐蔽通信方案，并建立了系统模型，然后采用离散基带信号分析了其隐蔽性能、抗干扰性能以及相关参数的选取。
A scheme of satellite covert communication based on the coherent chaos shift keying signal is proposed in this paper, then the whole system model is also constructed.
有一种说法是X- 37是一架间谍飞机，旨在捕获各种精明的目标。这些精明的目标发现间谍卫星位临上空时，能够知道如何隐蔽自己。
One theory is that it is a spy plane, designed to catch savvy targets that know how to go to ground when spy satellites - which have predictable orbits-are overhead.
有一种说法是X- 37是一架间谍飞机，旨在捕获各种精明的目标。这些精明的目标发现间谍卫星位临上空时，能够知道如何隐蔽自己。
One theory is that it is a spy plane, designed to catch savvy targets that know how to go to ground when spy satellites - which have predictable orbits-are overhead.
应用推荐