demodulation function 中文意思是什麼

demodulation function 解釋
解調函數
  • demodulation : n. 【無線電】解調，反調制；檢波。
  • function : n 1 功能，官能，機能，作用。2 〈常 pl 〉職務，職責。3 慶祝儀式；（盛大的）集會，宴會。4 【數學】...
  1. The system resolutions of the two measurands - temperature and strain - have been obtained by using a 16 - byte sampling card. the distributed demodulation function is also testified

    使用16位采樣卡測試了系統對溫度和應變這兩個物理量測試的解析度，並驗證了系統的分散式解調功能。
  2. This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller

    本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。
  3. After introduction of the whole fpga design of b3g downlink, chapter four schemed out every function module such as time synchronization, frequency synchronization, timing recovery, last frame detect, ofdm demodulation and rocket i / o interface etc. lots of structure schemes and simulation waves were presented

    主要包括時間同步模塊、頻率粗同步模塊、頻率精同步模塊、定時恢復模塊、尾幀檢測模塊、 agc / afc輔助模塊、 ofdm解調模塊和rocketi / o介面模塊等。
  4. The code synchronization pulse brought from code synchrolock has the synchronization benchmark heart function in the demodulation processing. at the same time, it is the base of frame demodulation and datum processing

    位同步器產生的位同步信號起著遙測解調處理「同步基準」的關鍵作用，是后續幀格式解調和數據處理的基礎。
  5. This paper describes a spread spectrum receiver, which is equipment in self - determination outer measuring systems. it consists of two parts : fast capture and track systems. its main function is receiving capture scout demodulation and transmit spread spectrum signal coming from the objects

    本論文所研究的擴頻接收機是自主外測系統中的關鍵設備，由快捕和跟蹤兩部分組成，其主要功能是對來自目標的擴頻信號進行接收、捕獲、跟蹤解調和轉發。
  6. The dvbs receiving card is a receiving platform for dvbs together with the customer s pc. the dvbs receiving card and the customer s pc build - up the dvbs s receiving subsystem. the dvbs receiving card s function parts include qam demodulation, error - correcting decoding, system - level demultiplexing, pci bridge and buffering

    根據dvb - c數據廣播系統接收卡的設計目標和實現的功能， dvb - c數據廣播系統接收卡的功能應包括： qam解調、糾錯解碼、 mpeg - 2系統層解復用、 pci橋接及緩沖功能幾個部分。
  7. The task is based on st ’ s sdtv channel decoder solution with a highly integrated single - chip fully digital qam demodulation stv0297. chapter 1 introduced the interrelated background of this item ; chapter 2 introduced the coding and decoding theory about channel ; chapter 3 described the hardware structure, the function, the realizing principle and the method of the pcb design ; the scheme and flow chart of software design are also described in detail in chapter 4 ; chapter 5 described the testing and analyzed the result ; at last, chapter 6 presented the summing - up of this dissertation

    第一章介紹了本項目的相關背景知識;第二章簡單描述了通道編解碼原理;第三章系統地介紹了標準清晰度數字電視機頂盒通道解碼器的硬體構成、功能和實現原理，並介紹了電路板的設計方法;第四章對通道解碼的軟體設計方案和實現流程也做了比較詳細的闡述;第五章給出了測試結果並對其進行了分析;第六章對本論文進行了總結。
  8. To understand the structure and the function of the programmable digital down - converter ( ad6620 ) deeply, to complete the design of the circuit and the hardware realization of the if digital orthogonal demodulation cell, to introduce the testing method and the testing results of the amplitude consistence error and phase orthogonality error of the output demodulation signals

    完成中頻采樣單元的電路設計和硬體實現，詳細介紹高速adc主要動態特性的測試方法和測試結果； 3完成中頻數字正交解調單元的電路設計和硬體實現，給出解調輸出i 、 q兩路信號的幅度一致性誤差和相位正交性誤差的測試方法和測試結果；
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