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- By replacing the sinusoidal modulation wave with its tangent or secant, three novel tangent sampling methods and two secant sampling methods were gained. 并在此基礎上，分別利用切線(xiàn)和割線(xiàn)來(lái)近似替代正弦調制波，獲得了3種新的切線(xiàn)采樣法和2種割線(xiàn)采樣法。
- On the basis of design of DDS utilizing FPGA, it presented a method of realizing the altitude modulation by generating the main wave and the modulation wave respectively, and the frequency modulation by changing frequency tuning word of main DDS. 在利用FPGA實(shí)現DDS的基礎上,使用兩路DDS分別產(chǎn)生主波形和調制波形,方便地實(shí)現兩個(gè)任意波信號的幅度調制; 同時(shí),通過(guò)調制波形數據實(shí)時(shí)控制主DDS的頻率控制字,用數字的方法直接實(shí)現波形的各種頻率調制。
- That period was a bright page in the history of Chinese literature. 那個(gè)時(shí)期是中國文學(xué)史上光輝的一頁(yè)。
- Let us hope that the period of this injustice will be over soon. 讓我們希望這個(gè)不公正的時(shí)期很快結束吧。
- By transverse exposure, periodical modulation of refractive index is formed along the axis of optical fiber. 制備原理是對光纖橫向曝光，使光纖的折射率指數在軸向發(fā)生周期性變化。
- In this thesis, CO2 laser was employed to periodically modulate the diameter of PCF. 在本論文中，我們使用二氧化碳雷射束對光子晶體光纖在傳播方向上的外徑尺寸作周期性的調變。
- Childhood is a period of rapid growth. 幼年是生長(cháng)迅速的時(shí)期。
- He consulted the chronicles of the period. 他參考了這一時(shí)期的編年史。
- high-frequency periodic modulation 高頻周期調制
- Demodulation of Balance Amplitude Modulation Wave 平衡調幅波的解調
- amplitude modulation wave and demodulator 調幅波解調器
- He had to decide within a given period. 他得在一定時(shí)間內作出決定。
- She has a detailed knowledge of this period. 她對這段時(shí)期的情況了解地相當詳細。
- In that period auto sales hit a14-year low. 這時(shí)期汽車(chē)銷(xiāo)售量達到14年來(lái)最低水平。
- An approach that generates 5 pulse-width modulation waves with ATmega16L AVR embedded microcontroller for the controlling of JR servos is described in this pa per. 本文提出了利用ATmega16L AVR嵌入式微控制器產(chǎn)生5路PWM信號控制JR舵機的方法。
- In this period, unemployment reaches record levels. 這段時(shí)間的失業(yè)人數又達到了創(chuàng )紀錄水平。
- Which period of history are you studying? 你正在學(xué)哪一段歷史？
- time period modulation frequency 時(shí)間周期調制頻率
- Can the person have periodic mood wave motion? 人是不是會(huì )有周期性的情緒波動(dòng)？
- With cyclic prefix, the channel matrix exhibits block circulant property which is exploited to blindly identify periodically modulated block transmission system in an existing method. 一種針對具有循環(huán)前綴和周期調制的塊傳輸系統的盲辨識方法，利用了信道矩陣的塊循環(huán)特性來(lái)求解信道系數。
