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strech
去斜率(strech)参考信号与回波信号混频后得到中频输出信号S(t)=Aexp(j*2*pi*f0*t+phase)
其中f0与回波延时的关系为:
f0=k*delay_t
K为线性调频斜率,delay_t为回波延时
将s(t)采样,FFT变换即可得到目标距离与频谱的关系。
Strech 信号测距
输入混频后的中频信号(图一),经采样及FFT变换得到频谱(图二)
再根据频谱与距离的关系式R=Tcf/2B显示出距离(图三)
(Go slope (strech) obtained after the reference signal and the echo signal mixer IF output signal S (t) = Aexp (j* 2* pi* f0* t+phase) f0 and echo delay relationship: f0 = k* delay_t K chirp slope, delay_t the echo delay sampling s (t), the FFT transform to the target distance spectrum of relations. Strech signal ranging input mixer IF signal (Figure 1), sampling and FFT transform spectrum (Figure 2) according the the spectrum distance relationship R = Tcf/2B shows the distance (Figure 3))
- 2012-11-27 20:36:34下载
- 积分:1
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OFDMA_syn_intfreq_sim
OFDMA的整数频偏算法仿真,采用1024个子载波.(a arithmetic for the integer freq offset in OFDMA system.the parameter is 1024)
- 2012-02-27 20:35:07下载
- 积分:1
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psbpmmotor
模糊控制永磁同步电机,在模糊控制器作用下,控制电机转速。(Fuzzy control of permanent magnet synchronous motor, in the fuzzy controller under the control of motor speed.)
- 2007-10-14 19:04:35下载
- 积分:1
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splash
add a splash screen to yor deployed application
- 2009-03-03 14:26:22下载
- 积分:1
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DDC
DDC的模块图,很好很实用哦,欢迎下载~~(DDC in the block diagram, a very practical Oh well, welcome to download ~ ~)
- 2010-08-26 20:08:52下载
- 积分:1
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matlab
本次实验是要我们先产生心电信号,再加噪声再滤波。由一个心电信号数据表输出心电信号,由于已知的心电信号有噪声,所以我先将信号进行滤波,得到正确的心电信号。再加噪声,通过滤波可以得到高频和中频噪声,将原信号加上噪声显示再滤波。每次的时域信号都画出了他们相应的频谱,便于观察。每次的滤波我也尝试了不同的滤波器。(This experiment is to produce our first ECG, together with noise and then filtering. ECG data from a table output ECG, ECG as a known noise signal is filtered first, I get the correct ECG. Plus noise can be obtained by filtering high-frequency and intermediate frequency noise, the original signal plus noise shown again filtering. Time-domain signals each draw their corresponding spectrum, easy to observe. Every time I try to filter the different filters.)
- 2011-05-30 15:52:47下载
- 积分:1
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shannonsource2
信息论与编码中,对香农信源编码定理的仿真,验证了香农编码定理的可行性。(information theory and coding, right Shannon source coding theorem simulation, verification of the Shannon coding theorem.)
- 2007-05-20 10:59:53下载
- 积分:1
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images-tutorial1
File is having matlab code for removing green pixel from image
- 2014-09-23 14:03:42下载
- 积分:1
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shexing
车辆蛇形运动的程序,主要是研究高速列车稳定性的东西(hunting behavior of vehicle)
- 2011-10-16 14:39:48下载
- 积分:1
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ellipse
绘制椭圆,输入为椭圆中心坐标,方向,角度(drawing ellipse)
- 2013-11-13 04:30:52下载
- 积分:1