求翻译：针对单通道信号盲检测问题，国内外相关人员已提出了许多方法，但大都需要利用接收信号的某些先验信息，如载频、扩频码参数等，不是盲检测。是什么意思？

For single-channel blind signal detection problems, domestic and foreign officers have made a number of ways, but most need to use some of the received signal prior information, such as carrier frequency, spreading code parameters, not the blind detection.

For single-channel signal blind detection issues, both at home and abroad have been made by the relevant staff, but many of the methods are mostly needed to use the reception of signals, such as certain a priori information channel, spread spectrum, code parameters such as not blind detection.

In view of the single channel signal blind examination question, the domestic and foreign correlation personnel proposed many methods, but needs to use the receive signal mostly certain apriori informations, like the carrier frequency, the wide frequency code parameter and so on, is not the blind ex

For single channel signaling blind detection issues, domestic and international stakeholders has put forward a number of ways, but most require some prior information of the received signal, spread spectrum code parameters such as carrier frequencies, and so on, is not blind.

For single channel signaling blind detection issues, domestic and international stakeholders has put forward a number of ways, but most require some prior information of the received signal, spread spectrum code parameters such as carrier frequencies, and so on, is not blind.