After a valid Signal is found, it shows your current position and average position, satellites in use and view.

找到一个有效的信号后，它显示了您当前的位置和平均位置，在使用和查看卫星。

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It is a hot problem considered by many scientists that how to extract the valid signal in data of seismic prospecting with inherence of the chaos.

如何根据混沌固有的性质，对地震勘探资料中的有效信号进行提取是许多科学工作者极为关注的问题。

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Band-pass filter often used in anti-jamming devices, in order to receive a valid signal within the band, while the elimination of high frequency and low frequency interference and noise.

带通滤波器经常用于抗干扰设备中，以便接收某一频带范围内的有效信号，而消除高频段和低频段的干扰和噪声。

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Being able to mine massive amounts of historical data from the social web to extract metrics relating to activity, sentiment and anomaly identification provides financial firms with ample opportunity to isolate valid trading signal within processed social data.

FORBES: There Are 200 Million People Tweeting: Are You Listening?