线性调频信号,LFM signal
1)LFM signal线性调频信号
1.Design of real-time parameter estimation system forLFM signal;一种线性调频信号参数估计实时系统的设计
2.Adaptive kernel distributions for multi-componentLFM signals;用于多分量线性调频信号的自适应核分布
3.LFM signal will likely become the main signal form in underwater target strength broadband test.线性调频信号可能将成为水下目标强度宽带测试的一种主要信号形式。
英文短句/例句
1.Parameters Estimation and Time-frequency Analysis of Chirp Signal;线性调频信号的参量估计与时频分析
2.Time-Frequency Analysis of Nonlinear Frequency Modulation Signal and Its Application;非线性调频信号的时频分析及其应用
3.The Detection and Parameter Estimation of the Linear Frequency Modulated Signals and Nolinear Frequency Modulated Signal in Low SNR;线性调频和非线性调频信号的检测与参数估计
4.A Method for Measuring the Linearity of the Linear FM Signal一种测量线性调频信号线性度的方法
5.SNR estimation method of LFM signal detection线性调频信号检测的信噪比估算方法
6.LFM signal detection by fast chirp transform线性调频信号检测的快速调频变换算法
7.Parameter Estimation of Linear Frequency Modulated Signals Based on MP Algorithm;基于MP算法的线性调频信号参数估计
8.A Fast Parameter Estimation Approach for Multiplicative Signal Combined PRBC and LFM伪码-线性调频信号快速参数估计算法
9.Design of LPM signal generator based on FPGA基于FPGA的线性调频信号产生器设计
10.Estimation of Nonlinear FM Signal Parameter Based on DPT基于DPT的非线性调频信号参数估计
11.Instantaneous frequency rate estimation of multicomponent two-dimensional chirp signals多分量二维线性调频信号瞬时频率变化率估计
12.Effect of Doppler Frequency Shift on Linear Frequency Modulation Signal Pulse Compression多普勒频移对线性调频信号脉冲压缩的影响
13.LFM signal parameter estimation based on spectrum zoom基于频谱细化的线性调频信号参数估计
14.Linear FM Signal Estimation Method Based on Linear Iterative Prediction基于线性迭代预测的线性调频信号估计方法
15.High Performance Pulse Linear FM Signal Generation Research;高性能脉内线性调频信号发生技术的研究
16.Study on Performance Evaluation of Large Time-Band Width Linear Frequency Modulation Signal;大时带宽线性调频信号性能评估技术研究
17.Design of Non-linear Frequency Modulation Signal Waveform Based on Frequency Modulation Function and Data Fitting基于调频函数和数据拟合的非线性调频信号波形设计
18.Research of Fast Parameter Estimation Algorithm of LFM Signal;线性调频信号参数快速估计方法的研究
相关短句/例句
Chirp signal线性调频信号
1.Maximum likelihood parameter estimation of chirp signals based on MCMC;基于MCMC的线性调频信号最大似然参数估计
2.Parameter estimation of chirp signal based on fourth-order cumulant;基于四阶累积量的线性调频信号参量估计
3.The chirp signal is used for modulation, and the energy of chirp signal is collected effectively when the Fourier order is suitable, thus, the capability of the system’s anti-noisy disturbance is improved and frequency selective attenuation is also solved.以线性调频信号(chirp)作为调制信号,利用线性调频信号在分数阶傅里叶变换域的能量聚焦特性,提高系统的抗噪声干扰和频率选择性衰减的能力。
3)Linear frequency modulated signal线性调频信号
1.Analysis of clock shaking error in ADC based on linear frequency modulated signal;基于线性调频信号的ADC时钟抖动误差分析
2.A modified algorithm for the estimation of the parameters of linear frequency modulated signal;一种修正的线性调频信号参数估计算法
3.Parameter Estimation of Linear Frequency Modulated Signals Based on MP Algorithm;基于MP算法的线性调频信号参数估计
4)linear frequency modulation signal线性调频信号
1.A model of anti - reverberation welter withlinear frequency modulation signal;线性调频信号的抗混响起伏模型
2.This method has used the short-time Fourier transformation basic principle,and analyzes some non-steady signals such as thelinear frequency modulation signal,and the method can describe how the signal frequency changes along with the time well,then can distinguish the signal very easily.此方法利用了短时傅里叶变换(STFT)的基本原理,对线性调频信号等一些非平稳信号进行分析,能很好地描述信号的频率如何随时间而变化,进而能很好把信号区分开来。
3.A chirp parameters estimation method was proposed which could evaluate the Doppler frequency and chirp rate separately of thelinear frequency modulation signals by comparing the mainlobe and sidelobe magnitude ratio of the rows or columns in the MDCFT amplitude matrix.提出了一种从比较MDCFT幅度值矩阵行(列)的峰值旁瓣比来分别定位线性调频信号的多普勒中心频率和调频率的方法。
5)LFM线性调频信号
1.Parameters-Extraction of theLFM Signal Based on Radon Transform;基于Radon变换的线性调频信号参数提取
2.Application of Time-Frequency Analysis in Phase Error Estimate ofLFM Signal;时频分析在线性调频信号相位误差估计中的应用
3.A Synthesized Method ofLFM Signal Analysis;一种线性调频信号参数分析的综合方法
6)NLFM signal非线性调频信号
1.First of all,this paper compares some typical methods of extracting the in-pulse features ofNLFM signal,such as wavelet transformation,PWD.通过讨论小波变换法、伪威格纳威尔分布(PWD)法等典型非线性调频信号脉内特征提取方法,提出了将小波变换法和PWD法提取的结果进行截断综合,再提取时频图脊线的新算法。
2.The basic principles of weight Linear Frequency-Modulated (LFM) signals andNLFM signals are introduced.在研究线性调频信号加权和非线性调频信号产生原理的基础上,针对大时宽带宽积信号,基于4种窗函数对2种调频信号形式进行了波形设计,并进行了仿真,给出了不同设计波形的脉压性能,其结果对于大时宽带宽积信号的波形选择具有指导意义。
3.The principium of NLFM Signal generation is expounded, and then the influence of Doppler-toler-ance of the signal, quantization digits and sampling frequencies on the digital pulse compression is analysed, by designing the waveform ofNLFM signal on the basis of the fourth power of cosine window function.阐述了非线性调频信号产生的基本原理,并基于余弦四次方窗进行了非线性调频信号波形设计,分析了该非线性调频信号的多普勒容限及量化位数和采样频率对数字脉压的影响,仿真结果表明该非线性调频信号具有一定的优越性,并对其数字脉压的工程实现有一定指导意义。
延伸阅读
调频-调频遥测系统采用调频-调频二重调制方式的频分制遥测系统,简称FM-FM遥测系统，属于模拟式遥测系统。FM-FM遥测系统的抗干扰能力强，遥测精度也比较容易得到保证。模拟式遥测系统大都采用这一类系统。下图为 FM-FM遥测系统的框图。各路被测量经变换器变换成电压信号后去控制各路副载波振荡器。副载波振荡器一般采用压控振荡器（即电压控制的振荡器），其振荡频率正比于控制电压,这样就实现了第一次调频。为了防止路际干扰,各路已调副载波先通过低通滤波器，滤去高次谐波，再送到相加放大器形成多路信号，并通过信道调制器对载波调频，这样就实现了第二次调频。已调频的载波由发射天线发送出去。接收端收到遥测信号后先通过解调器解调出多路信号，再送往各分路的带通滤波器，即分路滤波器，把各路已调副载波分离开来。分离出来的已调副载波送到相应的分路解调器，进行第二次解调，就可以得到所传送的模拟信号。美国对 FM-FM遥测系统已经实现了标准化、模块化、系列化。广泛应用模拟集成电路制成标准部件，提高了系统的可靠性和适应性。
