linear frequency modulation

A Study on Restraining Doppler Frequency of LFM Fuze;

连续波线性调频引信中多普勒频率抑制研究

A Method of Eliminating LFM Interference in Spread Spectrum Communication;

扩频通信中滤除线性调频干扰的实现方法

Design of single sideband LFM waveforms generator;

单边带宽带线性调频信号发生器的设计

The Pre-condition for Variable Capacitance Diode Frequency Modulator Obtaining the Linear Frequency Modulation;

变容二极管调频器获得线性调频的条件

Parameter estimation of linear frequency modulation radar signal based on the improved high-order ambiguity function;

基于改进HAF的线性调频雷达信号参数估计

Study on Laser Linear Frequency Modulation in SAL;

合成孔径激光雷达中激光线性调频技术研究

A parameter estimation algorithm of chirp signal which makes use of the position and magnitude of non zero cyclic spectral peaks to estimate the three parameters is presented.

线性调频信号是二阶循环平稳信号,其周期谱幅度包含了信号的最小载频、最大载频以及调制斜率等信息。

Finally,a new cascaded detection method is put forward for detecting the chirp signal using radar.

将它应用于雷达信号检测的应用背景形成了一种对线性调频信号的级次检测算法。

This paper introduces the chirp transceiver SSC P485 of the Intellon company.

介绍了Intellon公司的线性调频收发器SSCP485 ,并基于该芯片和声码器AMBE 10 0 0以及单片机研制出了一种新型的 10kV扩频数字传输系统 ,描述了其硬件设计和软件构成 ,还进行了调试和性能分

For the sake of increasing the input power of jamming signal,a linear FM signal is proposed as jamming signal,which simulates the target signals of compression radar(namely matched jamming).

为了提高干扰的有效功率,提出一种与脉压雷达目标信号相仿的线性调频信号作为干扰信号(即匹配干扰),经过理论分析得到了匹配干扰信号在不同的对准频偏情况下,进入雷达的有效干扰功率。

The difference frequency’s spectrum of sawtooth waveform linear FM fix distance system is analyzed when echo delay time is much less than modulate period.

分析锯齿波线性调频定距系统在回波延迟时间远小于调制周期时的差频信号频谱 ,证明参数设计后的差频信号频谱在单一延迟下具有主要频点幅值远大于其它频点幅值的特点 ,满足了Goertzel算法进行谱分析的条件。

Basing on the principle of wavelet transform in denoising,average wavelet spectra is defined and then a fast and accurate method for recognition of low SNR linear FM is proposed in this paper.

基于小波变换理论在信号去噪方面的理论,定义了均值小波能谱,进而提出了一种快速准确识别低信噪比线性调频信号调制参数的方法。

To obtain the range property of a novel combined modulation format—pseudo-random binary-phase code(PRBPC) and linear frequency modulation(LFM) combined modulation signal,the ambiguity function method is used.

为获得伪码调相与线性调频复合调制连续波信号的测距性能,采用模糊函数方法,计算了复合调制信号的模糊函数,推导了测距精度的定量计算公式,分析了测距精度的影响因素,并进行了仿真验证。

A hybrid radar signal composed of linear frequency modulation(LFM) and Taylor quadriphase coded signal was presented,in point of the question that the simply modulated radar signals can be easily intercepted by electronic reconnaissance equipment of the distant enemy in modern electronic war.

针对雷达在现代电子战争中采用简单调制的电磁波信号容易被远距离的敌方电子侦察设备截获的问题,提出了一种线性调频和Taylor四相码的组合调制雷达信号,通过理论分析和计算机仿真,给出了信号的波形,画出了模糊图,分析了距离分辨力、速度分辨力和低截获特性,结果表明该信号具有线性调频和Taylor四相码2种信号的优点,是一种具有“图钉”型模糊函数的低截获概率信号。

To solve these problems,a fast parameter estimation algorithm is proposed for a compound signal which is comprised of a pseudo - random binary phase code(PRBC) signal multiplied by a linear frequency modulation(LFM) signal.

现有复杂调制雷达信号参数估计算法计算量较大,且要求部分先验信息已知,针对此缺点,提出了一种伪码-线性调频乘性复合信号的快速参数估计算法。

In this paper, we present a new frequency modulation function on the basis of features of traditional non-linear frequency modulation signal.

根据非线性调频函数的调频曲线,拟合出一种新的调频函数曲线,使该函数在定义域内的值及其一、二阶导数与调频S曲线高度一致。

Non-linear FM pulse compression

非线性调频脉冲压缩

chirp Z-transform algorithm

线性调频Ｚ变换算法

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

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

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

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

The Pre-condition for Variable Capacitance Diode Frequency Modulator Obtaining the Linear Frequency Modulation;

变容二极管调频器获得线性调频的条件

LFM signal detection by fast chirp transform

线性调频信号检测的快速调频变换算法

A SOLUTION TO THE LINEAR FM PULSE COMPRESSION SYSTEM BY USING THE DISPERSIVE DELAY LINE

色散型延迟线实现线性调频脉冲压缩

Hybrid Radar Signal Composed Modulation of Linear Frequency and Barker Phase Coded Modulation

线性调频和巴克码组合调制雷达信号

Chirp-Z Transform and its Applications in Spectrum Analysis

线性调频Z变换在信号频谱分析中的应用

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

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

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

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

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

SNR estimation method of LFM signal detection

线性调频信号检测的信噪比估算方法

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