脉冲调频

脉冲调频波探测性能分析

An Analysis of the Detective Performance of the Pulse Frequency Modulation Wave

增量调制和脉冲调频是两种不同的脉冲调制方式，应用这两种方式可有效地对次声频信号作调制解调。

Increment-modulation and pulse-modulated frequency are two different methods in pulse modulation .

脉冲调频式磁带记录强震仪

Pulse frequency modulation magnetic tape record type strong-motion instrument

研制一种脉冲调频雷达波形发生器。

A linear or nonlinear pulse FM radar waveform generator was developed successfully .

通过分析指出，对于窄带信号而言，基于中频信号采样技术的脉冲调频雷达波形发生器在杂散抑制上优于传统的脉冲调频雷达波形发生器。

After analyzing it is concluded that compared to the traditional pulse FM radar waveform generator , for the narrow band signal , the pulse FM radar waveform generator based on IF sampling technique has optimal spurious level suppression capability and excellent flexibility and reliability .

三公分脉冲线性调频信号源

A 3-cm Linear Frequency Modulation Pulse Signal Source

为了获得高距离分辨率，将线性调频信号作为子脉冲构成调频步进雷达信号。

In order to obtain high range resolution , the Chirp signal is used as subpulse to form stepped frequency modulated radar signal .

通过理论推导和分析得出混合信号的频谱与子脉冲线性调频信号的频谱基本相同，这个结果与用计算机模拟所得结论一致；

Through the theoretical analysis , the conclusion that sub-pulse spectrum almost equals to hybrid signal spectrum is obtained , and the results are as same as that of computer simulation .

软件包括常规脉冲、线性调频脉冲、相位编码等雷达参数的测量、分析和PRI分选等主要模块。

Software includes the measurement of conventional pulse , LFM pulse , phase encoding parameters and PRI de-interleaving .

通过在特定时刻对DDS生成的信号进行补相，可以使单DDS同时生成多个目标的与被测雷达全相参的常规脉冲和线性调频回波信号。

By setting the DDS 's offset phase at given time , a single DDS can generate multi-target phase-coherence signals including LFM and general pulse for evaluated radar .

完成了基于PCI总线的任意波形信号源的方案设计、硬件设计与调试，该系统可产生单频脉冲、线性调频信号、三角波等任意波形信号。

Based on PCI , finish plan of the project , hardware design and debugging of wide signal source of radar . The system can produce Single , LFM and other arbitrary waveform .

文中，宽带脉冲压缩线性调频信号产生系统带宽可达500MHz，载频为2400MHz，该系统可以对信号失真进行一定程度的校正。

In this paper , this wide-band pulse compression signal generation system , which can generate LFM signal with 500 MHz bandwidth at 2 400 MHz radio frequency is introduced . Distortion of the system can be corrected in some degree .

脉冲压缩；线性调频信号；相位编码信号；目标回波信号；ADS；

Pulse compression ; Linear frequency modulated signal ; Phase encoding signal ; Echo signal ; ADS ;

用于脉冲多普勒雷达的调频/调幅噪声测试设备

FM / AM Noise Test Set for a Pulsed Radar

伪码调相脉冲引信抗线性调频干扰分析与仿真

Performance Analysis and Simulation of Anti-LFM Interference of Pseudo-random Code and Pulse-doppler Combined Fuze

其发射机采用脉冲编码和数字调频技术进行数据传输。

The transmitter 's data transmission applies the technology of pulse-code and digital frequency modulation .

对噪声调频干扰源的站间到达时差测量用于脉冲多普勒雷达的调频/调幅噪声测试设备

Estimation of TDOA for Locating Noise-Frequency Modulation Jammer in Passive System FM / AM Noise Test Set for a Pulsed Radar

第四章讨论了雷达回波信号的建模，主要涉及到的信号有相参脉冲信号、线性调频信号及巴克码信号，分析了它们各自工作在何种环境下及各自的特点。

In the chapter 4 the modeling of targets reflection signals are described , these signals consist of coherent pulse , chirp and barker sequences .

本文主要完成的工作有：（1）对线性调频脉冲信号、非线性调频脉冲信号以及相位编码脉冲信号进行模拟仿真。

This article is mainly to complete the work as follows . 1 . Simulating Single-frequency pulse signal , LFM pulse signal , NLFM pulse signal , PHC signal .

在频率步进雷达高距离分辨率技术的基础上，为解决压缩比的限制提出了在子脉冲内引入线性调频体制的新型雷达波形。

Based on stepped frequency high range resolution technique , in order to solve the limit of compression on ratio , a new stepped frequency waveform with intrapulse frequency modulation is presented .

在匹配滤波器理论基础上，使用在宽脉冲内附加线性调频的方法可以扩展信号的频带，使信号的时宽带宽积大于一。

Based on the theory of the matched filter , the bandwidth-duration product of the signal can be made greater than one , by the way of using the pulse width to add to the method of LFM signal band .

根据输入输出脉冲宽度的变化，可识别出线性调频脉冲压缩雷达信号，并测出其参数如脉冲宽度和调频斜率。

According to the change of widthes of the input and output pulses , the chirp signals can be identified and their parameters such as the pulse width and FM slope can be determined .