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244 Threads found on edaboard.com: Matlab Equation

## Help for getting equation for kalman gain and covariance matrix

ir , one matlab code from a discussion helped me to do my work,Now I need to get the gain equation of kalman filter ,to compare the code . K(1:5,k)=sig(1:5,5*k-29:5*k-25)*F(1:5,k)*inv(F(1:5,k)'*sig(1:5,5*k-29:5*k-25)*F(1:5,k)+R); %Kalman Gain sig(1:5,5*k-24:5*k-20)=sig(1:5,5*k-29:5*k-25)-sig(1:5,5*k-29:5*k-25)*F(1:5,k)*inv(F(1:5,k)'*sig(1:5,

## Polynomial equation from the S matrix

Loss of connector can be determined directly from Insertion loss information in S12 or S21 but that will be at particular frequency since you have a range of frequency so you will get a trend in loss by observing insertion loss. To find the polynomial you can use matlab or even EXCEL that is very easy

## pec wedge diffraction matlab code

hi, I want to plot the diffracted field by a PEC wedge. I posted the equation and the main plot and my code's figure in an Image. and this is my matlab code,but I receive this error: Warning: Imaginary parts of complex X and/or Y arguments ignored > In polar (line 192) In wedgemodal11balanis (line 28) my code: clc clear all

## ECC of MIMO antenna calculation in Matlab

Iam using s-parameters values to calculate the ECC values. I extracted S11, S21, S12 and S22 from the simulator and used in matlab to find ECC. ECC values calculated from simulator(CST) and matlab differs. Any suggestions to solve it

## Noise cancellation using IIR LMS and Unscented Kalman for speech enhancement

Hiho, I am doing research using matlab- R(2011a) for noise cancellation using IIR LMS and unscented kalman filter. But I don't know how to create the code using matlab for IIR LMS. And for UKF, i dont know what is the equation of non linear state equation representing speech. Please could some experts can help me to solve (...)

## difraction from edge matlab code

hi, I want to simulate diffraction from wedge with matlab using equation in balanis electromagnetic book. but my fiqure is not look like book's figure. my code is: clear all clc c=5*(pi/12) q=(pi/4:pi/180:(9*pi)/4) a=pi/4 o=q-a f=100 for m=1:1:f z=j^(m/2) t=besselj(m/2,2*pi) b=sin(m/2*c) d=sin(m/

## Problem with directional coupler design equations

Hi anyone I'm designing a coupled line directional coupler. In the design procedure, I have two nonlinear equations to be solved. I tried to solve this equations with 'solve' function in matlab, but the given answers are not true. I also used the 'ezplot' function to solve the equations, but it shows numerous intersections (...)

## Error in Matlab function block of Simulink?

hi. I have to write following equation by "matlab function block" of matlab-simulink. my equation has two-expression and is periodic: A(t) = 1; 0equation in "matlab function block". (I (...)

## how to find equation for this points

If you have matlab, can do that by regression algorithms, like that:

## How to code this equation in MATLAB

hi, i want code this in matlab 1. Find the SVD of the controllability and observability grammians P = Up Σp VpT Q = UqΣq VqT 2. Find the square root of the grammians (left/right eigenvectors) Lp = Up Σp? Lo = Uq Σq? 3. Find the SVD of (LoTLp) Lo^T Lp = U Σ V^T I already code for no 1 and no 2.but,

## How can i find zeros of this nonlinear equation in matlab?

hi there,i have a nonlinear equation for insertion loss in generalized chebyshev like this: IL(x)=cosh((N-3)*acosh(x*sqrt((Omega0^2 -1)/(Omega0^2 -x^2)))+3*acosh(x)); now i want to find roots of this equation in matlab: 1+jεIL(x) & 1-jεIL(x) ε=0.100503781525921; Omega0=1.32551104310002; this is urgent, please (...)

## Airy Function Solution?

How can I solve this Airy Function in matlab? { d}^{2 }W/d{ z}^{2 }-(10z+5)=0

## Simulating a integral equation in matlab

Hi guys, I am trying to write a equation by using simulation but I don't know how can I simulate the equation with integral. I know how to solve a first and second order differential equation in matlab but this is not a differential equation!!! what should I do? the equation is: L = (...)

## IIR system , with H(z) to be implemented

You can write H(z) directly in matlab and then find the poles and zeroes. Then use the equation form for direct form 2, cascade form, parallel etc. and write them in matlab to analyze. I could not find function which automatically breaks H(z) and then arrange them in required form. Hope that helps.

## how to find all the roots of a nonlinear equation

I wish to find all possible roots of the equation 1-(x^-1)-x^1.5=0 How to do this in matlab???

## matlab code for plot of V vs b in fiber optics

Hello I am in need of matlab Program for plotting b versus V parameter for step index multimode fibers The relation between this two parameters involves bessel functions of first and second kind and hence the plotting needs inverse bessel function or else we have to solve a transcendental equation which is quite tedious Kindly help me

## know signal frequency in matlab

Hi, I've problem in know signal frequency in matlab? Is there any way to know that? any function to calculate it? for example t=-10:0.001:10; a=sin(2*pi.*t); what's the frequency of a? best regards

## need help in matlab in writing equation include sum

101051 anyone can help me how to inter the sum part in equation in matlab

## Capacitor mismatch modeling in matlab

Hi. Before start to design the SAR ADC, i want to simulate the relationship between capacitor mismatches of CDAC and SAR ADC using matlab. when capacitor mismatch ratio is 'sigma' and Cu is unit capacitance, plz check the equation and next matlab code capacitor mismatch ratio ~ N(0,sigma^2) when i want to make the capacitors (...)

## 3D waveguide analysis of rect wavguide

Hi , currently I am trying to develop a matlab code for calculating the electric field in 3D rectangular metallic waveguide can any one help me ,what is the equation for point source excitation for the case of 3D point rectangular metallic waveguide how to implement the excitation and equation for this I hardly find a papers (...)