時域加擾器 的英文怎麼說

中文拼音 [shíjiārǎo]
時域加擾器 英文
tes time element scrambler
  • : shí]Ⅰ名1 (比較長的一段時間)time; times; days:當時at that time; in those days; 古時 ancient tim...
  • : 名詞(在一定疆界內的地方; 疆域) land within certain boundaries; territory; region
  • : Ⅰ動詞1 (擾亂; 攪擾) harass; trouble 2 (客套話 因受人款待而表示客氣) trespass on sb s hospital...
  • : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
  1. 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技術的通信和抗干原理進行模擬分析,分別對和頻下採用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; ( 4 )分別對採取抗干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技術對干信號的抑制作用。
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