complex phase factor 中文意思是什麼
complex phase factor
解釋
復位相因子-
There are two uncertain factor about it : the phase of the pn code and the doppler - shift. after capturing the received signal successfully, the traditional ds receiver always uses a delay locked loop ( dll ) to synchronize the pn code and then uses a costas loop to realize the carrier synchronization. this complex closed - loop structure not only take long time to realize the synchronization, but also has the defect of “ hang up ”
傳統的擴頻接收機通常在捕獲偽碼信號后利用遲早門鑒相的延時鎖定環來實現偽碼的精同步,解擴后利用科斯塔斯環實現載波同步,這種閉環結構不僅同步時間長、結構復雜,而且鎖相環還存在所謂的「 hang - up 」現象。
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