中频段 meaning in English
medium frequency band
mf=mid frequency
mf=midfrequency
midrange
Examples
- Basde on further , analysis of formula d = 1 - af , this paper points out the conflict when using instantaneous limit and jadging positire and negative feedbavk byusing the depth of peedbavk , range of middle freguency of pnegative feedback amp circuit can also appear self - conflitct
摘要通过对公式d = 1 - af的进一步分析，指出用瞬时极性法与用反馈深度判定正负反馈时所出现的矛盾，说明负反馈放大电路的中频段也会出现自激的情况。 - A cyclic radial shearing interferometer was used to diagnose the wavefront distortion of a laser system and an lcslm ( liquid crysnd spatial ligh modulator ) was used to control it . some results have been summarized as follows : l . according to the theory of scalar quanity diffeaction and the model of the random gaussian phase screen of low frequency wavefront , the effect of the low frequency wavefront with different rms gradient on the focal spot of a laser beam was studied
本论文在激光光束波前畸变检测和控制上进行了新的探索，主要就空间相位调制环路径向剪切干涉仪以及它对波前畸变的检测和液晶空间光调制器及其对中频段波前畸变的控制进行了研究，其研究的内容和取得的成果如下：一、根据标量衍射理论，结合低频波前畸变的高斯随机位相分布模型，研究了不同均方根梯度低频畸变波前对激光光束焦斑聚焦性的影响，并采用描述中频段波前畸变的功率谱密度概念，模拟计算了它对激光焦斑旁瓣的贡献。 - To improve anti - jamming technique by spread spectrum close to monochromatic frequency , so that enhance the ability of anti - active - jamming and anti - passive - jamming , anti reconnaissance , anti - radiation missile , anti - stealth , by means of multi frequency spread spectrum and hopping spectrum instead of mono - frequency spread spectrum , realizing strong processing system for anti - interference signal , providing the method of generating of chirp signal and corresponding matched filter system
摘要为改进线性调频雷达系统所采用的在单色频率点附近扩谱抗干扰技术，加强制导雷达站具备抗有源、无源干扰，反侦察，抗硬杀伤的反幅射导弹和反隐身的能力，通过将单频点扩谱改为多频点扩谱跳谱，实现了高抗干扰信号处理系统，给出方案中在中频段实现的线性调频信号产生方法以及对应的匹配滤波处理系统。 - The control of the spatial mid frequency wavefront distortion was achieved based on our cri wavefront sensing and lctv wavefront correcting system . the results of our research show that crs interferometer can be used to diagnosing the mid and low frequency wavefront distortion of a laser beam and lcslm can be used to availably controlled it
通过以上研究，说明我们建立的环路径向剪切干涉仪可以用于icf激光驱动器的中低段波前畸变的检测，并且液晶空间光调制器可用于它的前级中存在的中频段波前畸变的校正。