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high-resolution-one-dimension
- 高分辨率要求系统具有大的带宽,瞬时带宽的增加必将提高系统对硬件的要求,本文采用方便灵活的步进频率波形信号。脉间频率步进波形通过子脉冲载频的步进变化来获得大的有效带宽,使成像具有高分辨率,采用加窗和补零方法提高信噪比,但该信号对目标径向速度非常敏感。采用补零方法提高距离取样分辨率,使距离像细化,并用公式说明了补零只能提高距离取样分辨率,并不能改变频率步进信号的距离分辨能力。该信号波形对目标径向速度的敏感,使目标能量分散到邻近的距离单元造成距离分辨率下降,如果不事先进行速度补偿,直接对回波信号进行逆
matlab 步进频率连续波
- 步进频率连续波,一维距离像,速度补偿,包括说明,波形图,源代码-Step frequency continuous wave, as one-dimensional distance, speed compensation, including a descr iption, waveform, source code
stp_rd
- 通过步进频率技术实现二维信号的带宽合成,提高雷达信号的距离向分辨率。-Through the step frequency technology to 2 d signal bandwidth synthesis, improve the distance of the radar signal to the resolution.
lc72131
- 基于Keil51平台编写的LC72131+CS1000的收音机控制程序,接收频率88Mhz到108MHz,步进100Khz。由于各个收音头不尽相同,初始化和控制并不一定合用,但其中的LC72131的读写却可以作为参考。-Keil51 prepared based on the platform LC72131+ CS1000 radio control procedures, to receive the frequency of 88Mhz to 108MHz, step 100Khz. As
HighConvert_Pwm
- 1.本文对一种高效的升压式PWM 变换电路作了分析研究 对开关状态的切换效率高 采用双零软开关工作,大大降低了开关损耗, 提 高了电路的转换效率. 2.该电路在高频的开关电源、逆变器等电力电子电路上有很大的实用价值, 可以提高电路的转换效率. -1. In this paper, an efficient step-up PWM conversion circuit analysis study on the switch to switch the state of high effi
signal_analyzer
- 最近看到有人提问怎样用FFT实现频谱分析,我认为能够进行到频谱分析的人,对于系统研究的深度基本上已经相当不错了。本人今天做了一个例程,发给大家参考一下。 历程主要内容(signal_analyzer.rar)如下: test1.txt 第一列为时间t,0.001s为步长;第二列为系统的输入信号;第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace,然后进行FFT,分析出两信号的频率,输出对于输入的幅值衰减(db),输出对输
VariableStepSizeLMSlms
- 基于变步长LMS在干扰抵消中的应用,其中key1,2,3为不同变步长的MATLAB程序,而pinyu则是LMS在频域中的应用,-Variable Step Size LMS-based interference cancellation in the application, which key1, 2,3 for different variable step size of MATLAB procedures pinyu is LMS in frequency domain applicat
DDS-baseddesignofthesinusoidalsignalgenerator
- 本设计采用AT89552单片机,辅以必要的模拟电路,实现了一个基于直接数字频率合成技术(DDS)的正弦谊号发生器。设计中采用DDS芯片AD9850产生频率1KHZ~10MHZ范围内正弦波,采用功放AD811控制输出电压幅度, 由单片机AT89S52控制调节步进频率1HZ。在此基础上,用模拟乘法器MC1496实现了正弦调制信号频率为1KHZ的模拟相度调制信号;用FPGA芯片产生二进制NRZ码,与AD9850结合实现相移键控PSK、幅移键控ASK、频移镇键FSK。-AT89552 the singl
0832tiaofutiaopin
- 这是一个用0832做的一个正弦波步进电压,每1V步进.还可以步进频率,不过那个延时没有调,自己可以任意调那个延时的时间,就可以任意的步进,延时程序都写好了,大家想要步进频率,自己调下那个延时时间就行了-This is a 0832 to do with a sine wave voltage step, every step 1V. Can also be stepped-frequency, but the delay did not emphasize that they are able
chirp
- steppedchirp子函数产生一个子脉冲数为N的步进频信号,子脉冲为chirp信号,参数可在main函数中设置,结果保存在数组y[]中。-Functions steppedchirp pulses generated for a subset of N step-frequency signal, sub-pulses for chirp signal parameters can be set up in the main function, the result stored in th
chirp
- steppedchirp子函数产生一个子脉冲数为N的步进频信号,子脉冲为chirp信号,参数可在main函数中设置,结果保存在数组y[]中。-Functions steppedchirp pulses generated for a subset of N step-frequency signal, sub-pulses for chirp signal parameters can be set up in the main function, the result stored in th
frequency
- 幅频特性测试:主要用DDS芯片AD9851实现在5秒内完成步进为1KHZ的频率特性测试。-Amplitude-frequency characteristics of the test: The main use of DDS chip AD9851 to achieve in 5 seconds to complete the step for the frequency characteristics of the test 1KHZ.
kekongfangda
- 用单片机AT89s52对可编程滤波器芯片MAX262 进行程序控制,可以同时对两路输入信号进行二阶低通、高通、带通、带阻以及全通滤波处理,滤波器的中心频率在15kHz~50kHz 频率范围内实现64 级程控调节,其Q 值在0.5~64 范围实现128 级程控调节。-In a simple, accurate, reliable, stable and universal principles, use of a hierarchical design to match the idea of i
Frequency Stepradar
- 频率步进matlab仿真:包括模糊图的生成,距离像的生成及允余去除拼接,最后还有雷达测角的matlab仿真,包括单目标及多目标-Frequency Step matlab simulation: including fuzzy map generation from the generation and Yun-I like the removal of splicing and, finally, the radar angle measurement of matlab simulation
hrr_profile
- 使用步频信号生成距离像,包含变量频率步数,频率差,散射体数量,距离元,散射体移动速度,来生成散射体的距离像。-Step-frequency signal generated using the range image that contains the variable frequency step, frequency difference, the number of scattering from the element, scattering body speed, to generat
step-frequency-phase
- 雷达测伪距 步进频率相位差分法 matlab仿真源码-The radar measured pseudorange step frequency phase difference method matlab simulation source
sim step Cross PSD
- 步进频率 微弱目标检测 生命迹象探测步进频仿真-Step frequency weak target detection signs of life detection stepped frequency simulation
STEP FREQUENCY System simulation
- 步进频雷达系统仿真程序,可用于对步进频雷达系统性能分析和仿真-step frequency radar simulation program.
06 PPT_SFR_Intro_Mazzaro
- 讲解步进频率信号的经典PPT,介绍了步进频率雷达,信号处理方法,雷达参数设计准则等(Introduction to stepped frequency radar. include high range resolution radar , step-frequency radar architecture, transmission, data capture, processing method and radar design parameters)
Frequency Filtering
- The reason for doing the filtering in the frequency domain is generally because it is computationally faster to perform two 2D Fourier transforms and a filter multiply than to perform a convolution in the image (spatial) domain. This is particularly