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- This thesis analyzes the AM and FM signal and give a actual realization of software radio receiver. 本論文對輸入的調頻和調幅信號的解調進(jìn)行了具體的分析。
- Chaotic FM signal is similar to random signal.It has good Electronic Counter-Counter Measure (ECCM) capabilities. 混沌調頻信號類(lèi)似隨機信號，具有較強的抗干擾性能(ECCM)。
- Low Power Dual Conversion Narrowband FM Recelver 低功率調頻窄頻帶接收器
- "Such noise generally affects the amplitude of a radio wave But not its frequency, so an FM signal remains virtually unchanged. 噪音信號只影響無(wú)線(xiàn)電波的振幅而不影響其頻率,因此,調頻信號可以基本上保持不變。
- As the pressure of the pregnant woman s abdomen would change if the foetus move, the FM signal is gotten by using pressure sensor. 針對胎動(dòng)發(fā)生時(shí)引起母體腹壁壓力改變這一生理特性,首先利用壓力傳感器從母腹部提取胎動(dòng)信號并經(jīng)采樣至計算機內;
- The frequency spectrum of an actual FM signal has components extending out to infinite frequency, although they become negligibly small beyond a point. 在模擬應用中，載波的頻率跟隨輸入信號的幅度直接成等比例變化。在數字應用領(lǐng)域，載波的頻率則根據數據序列的值作離散跳變，即所謂的頻率鍵控。
- Synchronous FM System provides broadcasters with continuous program coverage along highways or within a region under-served by a single FM signal. 摘要調頻同步廣播系統是僅使用一個(gè)頻率，實(shí)現地域覆蓋或高速路線(xiàn)性覆蓋的調頻傳輸系統。
- Abstract: Synchronous FM System provides broadcasters with continuous program coverage along highways or within a region under - served by a single FM signal. 摘 要: 調頻同步廣播系統是僅使用一個(gè)頻率，實(shí)現地域覆蓋或高速路線(xiàn)性覆蓋的調頻傳輸系統。
- It is well known that the SAR echo can be considered as a linear FM signal,so does the echo of moving targets.The square modulus of linear FM signal has high energy centrality in the ambiguity domain. 近似為線(xiàn)性調頻信號的SAR運動(dòng)目標回波信號的模糊度函數在模糊平面內具有很高的能量集中性。
- The SNR of ultrasound image could be increased by FM signal transmitting method.Especially, the SNR of deeper tissue image could be increased more, where the ultrasound signal is attenuated severely. 該成像方法能夠提高超聲圖像的信號噪聲比，尤其是提高超聲衰減嚴重的深部組織圖像的信號噪聲比。
- FM signals sometimes get "ducted" over great distances by various weather phenomena. FM信號有時(shí)得到"輸送的"了不起的距離由各種各樣的天氣現象。
- FM signals even bounce off the ionized trails left behind by meteors as they burn up in the atmosphere. FM信號甚而彈起被電離的足跡忘記了由飛星當他們燒在大氣。
- Narrowband FM synchronization broadcast application in fire-fighting wireless communication system 同頻同播技術(shù)在城市消防無(wú)線(xiàn)通信中的應用
- If two FM signals are on the same frequency at the same time, there will still be a heterodyne or beat note( unless one is6 dB stronger than the other). 通常商業(yè)電臺會(huì )濾掉這些亞音頻，但我們的業(yè)余電臺并不進(jìn)行過(guò)濾，所以我們可能能聽(tīng)到這個(gè)頻率的音頻。
- If two FM signals are on the same frequency at the same time, there will still be a heterodyne or beat note (unless one is 6 dB stronger than the other). 通常商業(yè)電臺會(huì )濾掉這些亞音頻，但我們的業(yè)馀電臺并不進(jìn)行過(guò)濾，所以我們可能能聽(tīng)到這個(gè)頻率的音頻。
- Model DL-850 FM Three-Band Wireless Earphone, It has functions to receive both AF and FM signals and can be used to accept hearing training instead of wire earphone in phonetic room. DL-850型調頻三波段無(wú)線(xiàn)耳機不僅具有音頻感應接收功能，還具有接收調頻信號功能，該型號無(wú)線(xiàn)耳機還可以代替語(yǔ)音室有線(xiàn)耳機進(jìn)行聽(tīng)力訓練。
- A red light is usually a signal of danger. 紅燈通常是危險的信號。
- I stood watching for the signal to change to green. 我站著(zhù)等待交通信號轉為綠燈。
- Let's set the clock by the radio time signal. 咱們照著(zhù)收音機的報時(shí)信號把鐘對一對。
- R. M. S.Value Error for Selective Voltmeter in Measuring FM Signal 選頻電壓表在測量調頻信號時(shí)的有效值誤差
