tracking symbol 中文意思是什麼
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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。 -
The receiver unit mainly consisted of the digital down converter, matched filter, integration and dump module, power detector, symbol tracking processor, differential demodulator, parallel - to - serial conversion module, output processor and afc module
接收部分主要有數字下變頻、數字匹配濾波器、積分清洗、功率檢測、符號跟蹤處理、差分解調、並串處理、自動頻率跟蹤處理等模塊。 -
In them, the target detection, and tracking using the ir imaging technique is one of the symbol of modernization, intelligent, autoimmunization of modern weapon
其中，利用紅外成像技術來實現對目標的檢測和跟蹤，是軍事武器現代化、自動化和智能化的重要標志之一。
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