这种编码技术依据是将发射信号在空域和时域都引入联合相关。
Space-time coding is based on introducing joint correlation in transmitted signals in both the space and time domains.
同时对运动矢量在时域上进行平均，在空域上进行带权矢量中值滤波处理。
Motion vectors are dealt with temporal average filter and a spatially weighted vector median filter.
这照片来自于一位警方直升机-在2001.9.11，这唯一的摄影师允许在空域中接近摩天大楼。
The images were taken from a police helicopter — the only photographers allowed in the airspace near the skyscrapers on Sept. 11, 2001.
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