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- 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 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。
- 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。
- 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。
- 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。
- Afterwards signal control flow is explained through taking example for producing Linear Frequency Modulation (LFM) and the way to calculate the control words is given. 并以线性调频信号的产生为例说明了信号控制流程，结合信号控制流程，给出了控制字的计算方法。
- Gauss linear frequency modulation wavelet is selected as base function to study wavelet spectrum, and its smoothed spectrum in time and frequency domain. 在前人工作的基础上,选用了高斯线调频小波作为基函数,研究了信号的小波谱,给出了小波谱在时间域及频率域的平滑谱并与傅里叶谱进行了比较。
- A new method is proposed for jamming the linear frequency modulation (LFM) radar, which is based on the feature of the LFM radar signals and is named sinusoidal weighted frequency modulation jamming. 摘要根据线性调频雷达发射信号的特点，提出一种新的应答式干扰技术-正弦加权调频干扰，即干扰机时接收到的雷达照射信号附加正弦频率调制，然后将调频结果放大之后转发出去。
- A method is presented for using field programmable gate array (FPGA) and numerical control oscillator (NCO) to approach a lower spurs and complex linear frequency modulation (LFM). 摘要针对采用脉冲压缩体制高性能超视距雷达的应用场合，提出了一种应用现场可编程逻辑阵列(FPGA)和数控振荡器(NCO)相结合实现低杂散复杂线性调频(LFM)方法。
- Synthetic Aperture Radar (SAR) gains a high-resolution radar image by compressing the Doppler echo in azimuth direction and the linear frequency modulation (LFM) signal in range direction. 合成孔径雷达在方位向对回波多普勒信号进行波束锐化，在距离向对发射的线性调频信号进行脉冲压缩，从而实现高分辨力的雷达图像。
- The fundamentals of LFM(linear frequency modulation) signals, waveform parameter design, system control, quality analysis and pre-distortion calibration are discussed in this paper. 本文讨论了线性调频信号的基本理论，研究了信号参数设计、系统控制、性能分析与预失真校正。
- 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 analysis and simulation for Linear Frequency Modulated (LFM) pulse compression signal of radar, it is very significant in the field of radar signal simulation. 摘要对雷达线性调频脉冲压缩信号进行分析以及仿真，在雷达信号模拟领域中是非常重要的。
- Finally, the ARM echo is integrated by linear frequency modulated matched filter.We got some valuable conclusion by analyzing the performance under unmatched condition. 通过分析不同调频匹配误差条件下的滤波器性能，获得了有价值的结论。
