frequency modulation fm 中文意思是什麼
frequency modulation fm
解釋
頻率調制- frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
- modulation : n 調整，調節；（聲調的）抑揚，變化；【音樂】轉調，變調；【無線電】調制。 amplitude modulation 振...
- fm : 1 Field Marshal 〈英國〉陸軍元帥。2 frequency modulation 【物理學】調頻，頻率調制。3 foreign miss...
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The pulse code modulation / frequency modulation ( pcm / fm ) is widely used in most reentry remote sensing ( rrs ) system at the present time in our country
目前我國再入遙測系統主要採用脈沖編碼調制/調頻（ pcm / fm ）體制。 -
Fm screening, short for frequency modulation screening, is a pew technology in today ' s graphic arts, which can avoid moire effectively, increase productivity, and improve product quality
調頻加網技術是印刷行業的一項新技術，它能有效消除龜紋的影響，提高生產效率和印品質量。 -
A comprehensive theory is presented for fm spectroscopy of doppler - broadened molecular iodine absorption lines. the relationship betwcen fm spectroscopy and modulation frequency and modulation index has been studied. the whole circuit for thc frcquency stabilized laser system has been developed
建立了多普勒加寬碘分子線性吸收fm光譜的一般理論，對fm光譜與調制頻率和調制度的關系進行了研究；並研製了532nmnd : yvo _ 4 / ktp碘吸收穩頻激光器的電路系統；提出了虛擬激光穩頻技術的概念。 -
Compared with dcsk modulation, the fm - dcsk modulation changed the chaotic signals with random magnitude into the signal with constant magnitude and random frequency, thus the systemic noise performance is achieved
將振幅隨機變化的混沌信號變為頻率隨機變化而振幅恆定的混沌fm信號，降低了系統的誤比特率。 -
Two kinds of typical wideband signal, frequency modulation ( fm ) signal and frequency spread signal, is analyzed qualitatively with wideband ambiguity function
以寬帶模糊度函數為工具定性地分析了兩類典型寬帶信號，即調頻信號和頻率分集信號。 -
In this paper, the author comprehensively expatiates the research on microwave phase in - lock frequency modulation. at first, the background of reentry telemetry system and the features of pcm telemetry system are presented, and then the author mainly discusses the application of phase in - lock fm techniques in the design of pcm transmitter and the analysis of characteristics of binary pcm reentry telemetry channel
在文章的前面，作者簡單介紹了目前再入遙測技術發展現狀和pcm系統的特點；然後給出了二元pcm再入遙測通道的系統分析和高碼速率數據傳輸實現的主要途徑；在文章的第三部分，討論了鎖相調頻技術及其在pcm遙測發射機中的實際應用。 -
Digital sound broadcasting is a general term covering a wide range of systems and technologies, including eureka 147 and isdb - t, which are designed to replace frequency modulation broadcasting, digital radio mondiale, a possible successor to amplitude modulation, as well as iboc, which is intended to complement the existing am and fm services
數碼聲音廣播?是一個統稱，技術上是分為不同的系統和制式，有取代fm廣播的eureka 147和isdb - t ，也有針對am廣播的drm ，和可以與am fm並存的iboc等系統，它們都有一個共通點，是現時的收音機並不適用。 -
Digital sound broadcasting is a general term covering a wide range of systems and technologies, including eureka 147 and isdb - t, which are designed to replace frequency modulation ( fm ) broadcasting, digital radio mondiale ( drm ), a possible successor to amplitude modulation ( am ), as well as iboc, which is intended to complement the existing am and fm services
數碼聲音廣播?是一個統稱，技術上是分為不同的系統和制式，有取代fm廣播的eureka147和isdb - t ，也有針對am廣播的drm ，和可以與amfm並存的iboc等系統，它們都有一個共通點，是現時的收音機並不適用。
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