頻譜技術公司 的英文怎麼說

中文拼音 [bīnshùgōng]
頻譜技術公司 英文
spectrum technology inc
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  • : Ⅰ名詞[書面語]1 (按類別或系統編成的書或冊子等) table; chart; register 2 (指導練習的格式或圖形)...
  • : 名詞(技能; 本領) skill; ability; trick; technique
  • : 術名詞1. (技藝; 技術; 學術) art; skill; technique 2. (方法; 策略) method; tactics 3. (姓氏) a surname
  • : Ⅰ形容詞1 (屬于國家或集體的) state owned; collective; public 2 (共同的;大家承認的) common; gen...
  • : Ⅰ動詞(主持; 操作; 經營) take charge of; attend to; manage Ⅱ名詞1 (部一級機關里的一個部門) dep...
  • 頻譜 : frequency spectrum; frequency content; spectrum; power density spectrum; power spectrum; [系統] s...
  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進行分析的基礎上,將通信理論中的直接序列擴( 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的通信和抗干擾原理進行模擬分析,分別對時域和域下採用dsss前後接收信號的進行分析,驗證dsss在本系統中的可行性; ( 2 )由dsss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對干擾信號的抑制作用。
  2. The software and hardware design of portable digital testing equipment based on tms320vc5510 are presented, which is the newly efficient and low power consuming dsp of ti corporation. the system realizes the requirement of sample theorem when sampling the wide spectrum signal with an equivalent sample technology, integrates the lcd control core in cpld and makes cpld as lcd controller instead of specific lcd controller, and makes the colorful stn - lcd as terminal displaying facility. the system suits the development requirement of the new portable digital testing equipment with the specialities of low power consuming, high integration and good displaying interface

    本文介紹了以ti新一代高效率、低功耗數字信號處理器tms320vc5510為核心實現的便攜式測試設備的軟硬體設計,以等效采樣實現采樣寬周期信號對采樣定理的要求,在cpld內集成完整的lcd控制核代碼,並以cpld作為lcd控制器取代專用控制器,以stn彩色lcd作為終端顯示設備,該方案具有功耗低、集成度高、良好的人機介面等特點,適合新一代便攜式測試設備的發展需求。
  3. Domestic free - to - air terrestrial broadcasters asia television limited ( atv ) and television broadcasts limited ( tvb ) warned the government against formulating digital terrestrial television ( dtt ) policies without knowledge of what technical standard the mainland would adopt and frequency plan coordination with mainland authorities had not been achieved

    本港兩家免費地面電視臺亞洲電視有限及電視廣播有限(無電視)向港府提出忠告,指在不清楚中國內地採用哪種標準前,以及尚未與內地機關完成規劃協調情況下,便制定數碼地面電視政策的做法甚不明智。
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