The Schumann resonance frequencies are a set of eigenmodes in the extremely low frequency (ELF) portion of the electromagnetic field spectrum. These frequencies are only present for planetary-like bodies with a substantial ionosphere acting as a perfect electric conductor, thus forming a resonance cavity with the surface. In this example, the Schumann resonance frequencies for the Earth are calculated.
标签： frequencies eigenmodes resonance extremely
上传时间： 2014-12-09
上传用户：stella2015
Image enhancement in frequency domain using Fourier center frequency, Gaussian lowpass filter, Low pass filter, high pass filter. Image restoration using medean filter, weiner filter with noise generator such as Gaussian noise, Salt and Pepper noise
标签： frequency enhancement Gaussian Fourier
上传时间： 2017-08-24
上传用户：xinzhch
WordCloud is a visual depiction of how many times a word is used, or its frequency if you will, within a given set of words. It does this by: reading in plain text, filtering out "stop words", counting how many times a word is used, and displaying results in a Squarified Treemap.
标签： WordCloud depiction frequency visual
上传时间： 2017-09-03
上传用户：cc1915
A direct digital frequency synthesizer based on cordic algorithm implemtnted with FPGA
标签： synthesizer implemtnted algorithm frequency
上传时间： 2017-09-08
上传用户：thesk123
This is an analog signal communication simulator, usign frequency modulation. It is designed in MATLAB-Simulink. The communications channel beetween the transmitter and the reciever is supposed to be affected by additive white Gaussian noise.
标签： communication modulation frequency simulator
上传时间： 2013-12-25
上传用户：王楚楚
a frequency modulation code for matlab
标签： modulation frequency matlab code
上传时间： 2017-09-15
上传用户：kristycreasy
this e-book is about radio frequency identification technology.
标签： identification technology frequency e-book
上传时间： 2014-08-06
上传用户：缥缈
Buffer low THD distortion and hi-impendance, Very wide frequency band.
标签： hi-impendance distortion frequency Buffer
上传时间： 2014-08-08
上传用户：dragonhaixm
Frequency characteristics for HD555, HD595 headphones.
标签： characteristics headphones Frequency HD
上传时间： 2017-09-24
上传用户：sssl
A MATLAB program has been written to investigate Orthogonal Frequency Division Multiplexing (OFDM) communication systems. This program is valuable for future researchers simulating systems that are too theoretically complex to analyze. Single-carrier QAM and multicarrier OFDM are compared to demonstrate the strength of OFDM in multipath channels. Two graphical user interface demonstrations show some of the basic concepts of OFDM.
标签： Multiplexing investigate Orthogonal Frequency
上传时间： 2013-12-09
上传用户：redmoons
