receiver gate 中文意思是什麼
receiver gate
解釋
接收機選通門-
In this paper, research on the algorithm of complete digital if and baseband transmission system and the realization of transmitter and receiver. / 4 - dqpsk is chosen as digital modulation scheme. the scheme of demodulation is baseband differential detection. sliding correlator can realize the symbol synchronous acquisition ; early - late gate synchronizer is used to do symbol synchronous tracking
系統的發射機選定/ 4 - dqpsk為調制方式，接收機採用基帶差分解調的非相干解調方式，滑動相關器捕獲發送的pn序列，早遲門同步器跟蹤符號同步，使用相關器對同步后的符號進行最佳判決，並在這些演算法實現的基礎上，實現了直接序列擴頻和解擴技術。 -
Anti - jamming capability of interferometer direction finder with multi channel receiver is analyzed and studied. measures for control co - channel jamming are given : reduce intererence strength by antenna character, change gate level of receiver, alter df bandwidth, make use of the pause function of display and a type of filter
提出了抗同波干擾的若干措施：利用天線的方向圖抑制干擾信號、改變接收信號的門限電平、改變測向帶寬、利用屏幕顯示的暫存功能、倒譜同態濾波方法等。 -
In this dissertation, the method to design and realize the digital receiver in the field programmable gate array ( fpga ) has been discussed ; combining coordinate rotation digital compute ( cordic ) to design nco, we get a efficient structure without multiplications
本論文正是運用現場可編成邏輯器件（ fpga ）設計與實現數字接收機問題開展研究，結合坐標旋轉數值計算（ cordic ）演算法實現數控振蕩器（ nco ） ，得到一種免乘法器高效可移植性好的數字接收機fpga實現結構，並在現有的硬體平臺上進行了接收機系統的調試，測試結果表明該接收機能夠達到系統指標要求。
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