The main researching objects of this branch of Photonics are high speed processes or ultrafast phenomena, presenting information as time and space resolution.
这个分支的主要研究对象是高速过程或超快现象，并以时间—空间分辨方式提供信息。
LEO constellation composed of two or more satellites can improve the time and space resolution and increase the number of occultation events greatly compared with a single LEO satellite.
与单颗leo卫星相比，由多个卫星组成的LEO星座观测到的掩星事件在时空分辨率和数量上都有很大的提高。
If the space shift invariance is replaced by the time shift invariance, the high resolution frequency estimation can be obtained using a single vector sensor.
如果将空间的位移变成时间的延迟，单个矢量传感器可以实现高分辨率的频率估计。
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