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- Radio-frequency Interferences (RFI) take the form of chirps after mixing with the intermediate frequency signal in a chirp radar and these chirps aggravate the performance of the radar. 摘要基于单一载频的射频干扰(RFI)在线性调频雷达中的表现形式，利用平均距离谱法获得了RFI的多普勒分布谱图。
- Its primary function is the amplification, mixing and filtering for the weak signal from the GPS receiver antenna to get the intermediate frequency signal used in the back-end correlator. 其功能主要是对从GPS接收机天线端接收到的微弱信号进行放大以及降频、滤波，得到后端GPS相关器电路正常工作所需要的中频信号。
- Zero intermediate frequency signal 零中频信号
- Design and Implementation of Radar Intermediate Frequency Signal Generator Based on DDS 基于DDS的雷达中频信号源设计与实现
- Method of Increasing Capture Performance of GPS Satellite Digital Intermediate Frequency Signal 提高GPS卫星数字中频信号捕获性能的方法
- intermediate frequency signal 中频信号
- Intermediate frequency instability has had the most uneven history. 中频不稳定性的研究经历了极为曲折的道路。
- In signal processing, second-generation enhanced intermediate frequency sampling speed and signal processing speed and capacity. 在信号处理方面,第二代提高了中频采样速度,并加强了信号处理的速度和能力。
- As a special case,the effect of rectangular envelope edge of pulse signal on intermediate frequency sampling is carefully studied. 作为一种特例 ,详细研究了简单脉冲信号矩形包络边沿对镜频抑制的影响 ;
- Low and intermediate frequency instability models are taken up first. 首先处理低频和中频不稳定性的模型。
- The paper focuses on the hardware design and implementation of intermediate frequency (IF) digital signal processing module and the human computer interface. 本文主要研究了区域无线电导航接收机中频数字信号处理模块软硬件实现以及人机接口设计。
- Low or intermediate frequency combustion instability generally involves the interaction of several components of an engine system. 低频或中频燃烧不稳定性通常包含发动机系统中几个组件的相互作用。
- Fundamentals of IF (Intermediate Frequency) bandpass signal sampling and quadrature detection are discussed, especially the coherent mixing LPF method and Hubert transform frequency-shift method. 摘要结合对带通采样定理的理解，讨论了直接中频带通信号采样正交检波的基本原理，重点探讨正交混频低通滤波法和希尔伯特变换频移法。
- In radio communications, a method of reception in which the frequency of received signal is changed to an intermediate frequency, by a heterodyne process involving a local oscillator. 在无线电通信技术中,将接收信号的频率通过采用本地振荡器的外差法变成某个中频的一种接收方法。
- The pure quartz lump becomes quartz tube via untouched technology of intermediate frequency induction heating. 采用中频感应加热无接触技术,将石英净坨拉制成为石英管。
- Digital Intermediate Frequency (DIF) system is applyied widely in Radar and communication systems. 数字中频系统广泛应用于雷达和通信系统中。
- A power harmonic suppressing method based on low voltage intermediate frequency inductive stove was introduced. 介绍了一种基于低压中频炉的电力谐波治理方法。
- As what is concluded from the above that it is practicable to design the digital intermediate frequency receiver with wide band at present. 由此可见，在现有条件下实现宽带数字中频接收机是可行的。
- There re fast intermediate frequency furnaces, automatic record of temperature measurement at stokehold and computer network. 高导电纯铜件及各种铜合金精密铸件；
- A high-side injection, fixed intermediate frequency (IF), double-quadrature-downconversion and low-IF structure is proposed for wideband receivers. 论证了宽带无线接收机宜采用上边注入、固定中频的二次正交混频低中频结构。
