digital correlator 中文意思是什麼
digital correlator
解釋
數字式相關器- digital : adj. 1. 手指的；指狀的。2. 數字的，數據的。n. 1. （鋼琴等的）琴鍵。2. 手指。
- correlator : 關聯子
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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。 -
Eventually, the digital correlator of the modificatory structure is designed and realized by fpga, and it manifests very high and reliable correlative performance
最後用fpga晶元設計並硬體實現了修正結構的數字相關器，這種結構的數字相關器具有很好的工作性能。 -
Meanwhile, the influence of doppler effect on pn correlation is analyzed. the realization principle and structure of the digital correlator is analyzed, and then the realization form of the classical and modificatory structure of the correlator is introduced
詳細分析了數字相關器的實現原理和實現結構，給出了經典結構和修正結構兩種結構的實現形式，分別對兩種結構進行了模擬分析，並對不同的實現形式進行了對比。 -
To enhance the system reliability, the sample frequency of the digital correlator is four times as much as that of the pn code
為了增加系統工作的可靠性，本系統採用4倍于偽碼速率的采樣頻率。 -
Based on the principle of the ultrasonic cross - correlation flowmeter, the key factor of the development of cross - correlation flowmeter, namely the design of cross - correlator, is analyzed in the paper. digital signal processing is introduced to design the flowmeter, the cross - correlation operation of random noise signal is dealt with inside the frequency field, and the digital cross - correlator is designed
本文從超聲相關流量計的工作原理出發，分析了超聲相關流量計研製的關鍵因素，即相關器的設計，並將數字信號處理技術引入了超聲相關流量計的設計，在頻域內對流動隨機噪聲信號進行相關處理，構造了數字相關器。 -
Other than traditionally theory analyze and discussion of digital correlator which is laid after demodulator, a scheme based on non - interrelated correlative dll will be discussed in this paper after referencing the theory and the result of simulation. the demodulated data and the information of carrier are not need in this plan. we sample the result of correlation between local sequences and the received signal, then realizing the code synchronization by software
不同於一般的理論分析以及解調后數字相關器的討論，本文通過理論分析與模擬結果，選用了非相干相關同步的基本結構，並加以改進，不需要解調和載波的信息，將本地序列與接受信號直接相關后進行采樣，通過軟體的方法，實現同步。 -
The fpga and dsp architecture has been used in the digital correlator, by which the spread spectrum signal can be demodulated at the intermediate frequency
數字相關器採用fpga + dsp的結構設計，實現了擴頻信號在中頻的解擴解調。
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