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- linear frequency drift 线性频率偏移
- In this paper,we analyze the cause of generating frequency drift that has more harm to the VSAT communication system. 分析了在通信系统中对通信危害较大的频率漂移问题的产生原因。
- Among all the passive and active islanding detection method,the active frequency drift method is pretty attractive. 孤岛检测是光伏并网发电系统所必备的功能。
- The limited sensitivity of present pulsar surveys and the greater frequency drift make the more distant pulsars difficult to observe. 目前脉冲星普查的有限探测灵敏度和大的频率漂移，使我们难以观测到更遥远的脉冲星。
- Linear frequency modulation (LFM) interferences may be a kind of preferred wideband interferences in spread-spectrum. 摘要线性调频(LFM)是扩频系统中常见的一种宽带干扰样式。
- The Linear Frequency Modulated（LFM） signal is a popular pulse compression radar signal. 摘要 线性调频信号是雷达中常采用的一种脉冲压缩信号。
- The pseudo-random noise(PRN) coded ionosonde has some advantages over linear frequency modulation(LFM) coded ionosonde in ionospheric sounding. 在电离层探测中 ,伪随机噪声编码探测仪与常见的线性调频电离层探测仪相比具有一定的优势。
- Frequency drifts due to: DC voltage, temperature, VSWR. 频率漂移跟直流电压、温度、驻波比有关。
- Based on sampling theorem, the modulation is completed by direct sideband spectrum shaping and linear frequency translation. 该方案基于带通信号的抽样理论，通过直接边带成形和线形频谱搬移来实现调制过程。
- The operating principle of complex modulation fuze using pseudorandom code phase modulation and linear frequency modulation is simply introduced. 简单介绍了伪码调相与线性调频复合调制引信的工作原理。
- Then, we use sinusoidal frequency modulation interference and linear frequency modulation interference to perform interference suppression test. 接著，我们将利用弦波调频干扰及线性调频干扰作为干扰抑制之测试。
- Measurements: Bit Error Ratio, Word Error Ratio, Carrier Power, Power versus Time, Centre Frequency Accuracy, Frequency Deviation, Frequency Drift, Timing Jitter, Audio Measurements. 非常感谢您对本公司的关注！如果您需要了解（产品型号+名称，自动调用）更详细的资料，请填写以下表单，我们将以最快的速度与您取得联系！
- The technique of the Linear Frequency Modulation(LFM) is proposed to solve the problems of the inter-symbol interference in this paper. 该文提出用线性调频信号调制的方法解决码间串扰的问题。
- The measuring error, which is caused by the sampling error or electrical-net frequency drift error,can be overcomed, to a certain extent,by the measurment techniques with quasi-synchronization. 由采样误差或者电网频率发生漂移导致的测量误差可以采用准同步方法提高精度。
- Linear frequency modulation (LFM) signal and binary phased code (BC) signal are applied widely in pulse compression radar system. 摘要线性调频信号和二相编码信号在脉冲压缩雷达系统中使用较为广泛。
- Compared with the performance of normalized single pulse signal and linear frequency modulation signal (LFM), a new method is presented. 摘要从归一化的单脉冲信号和LFM信号性能比较分析入手，提出了一种新的分析方法。
- This paper presents a new wideband digital beamforming method using subarrays and Linear Frequency Modulation (LFM) signal. 该文在基于子阵和发射为线性调频信号的前提下，提出一种宽带子阵数字波束形成方法。
- LFM (Linear Frequency Modulation) pulse is a kind of important large time-bandwidth product signal and commonly used in modern radar system. 摘要线性调频脉冲是现代雷达系统中常用的一种重要的大时宽-带宽积信号。
- They are ideally suited for use in analog-to-digital conversion (ADC), long term integration, linear frequency modulation and demodulation, and frequency-to-voltage conversion. 它们非常适用于模数转换(ADC)、长时间积分、线性调频和解调以及频压转换(FVC)。
- Two examples of application are also introduced. One is used for Digital Beam Forming(DBF) processor; another is for linear frequency modulation pulse compression. 文中还分别介绍了如何利用该模块构成一个4波束的数字波束形成处理器,和一个可以同时对4个波束的回波信号进行线性调频信号脉冲压缩的实时雷达信号处理器。
