# Miguel Albuquerque

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**Content Feed**

Question

Select zone of the plot

Hey guys, thanks in advance, Is there a way of representing azimuth3, only the red zones, which means, selecting only the most ...

2 meses ago | 1 answer | 0

### 1

answerQuestion

Select positive samples in a matrice

Hey guys, thanks in advance, I have this azimuth_compressed_matrix, defined by freq_azimuth(frequency) x azimuth. However I w...

2 meses ago | 1 answer | 0

### 1

answerQuestion

Place coordinates in the plot legend

Hey guys, is there a way of putting those red letters in the plot, at the front of "target" in the legend? Its just replacing x...

2 meses ago | 1 answer | 0

### 1

answerQuestion

Replace values in a array

Hey to all, thanks in advance Is there a way of: for each row of distance_matrix, for the values that are not zero,find the mos...

2 meses ago | 0 answers | 0

### 0

answersQuestion

Replace values in a array

Hey guys, thanks in advance, this is probably very easy What I need to do, is find where y_max is not zero, and see where the v...

2 meses ago | 1 answer | 0

### 1

answerQuestion

Replace values in a matrice

Hey guys, thanks in advance, I have this range(matrix) that has 1 x 5600 values. After that I perform a calculation , and I g...

2 meses ago | 1 answer | 0

### 1

answerQuestion

Create a matrice in a for loop

Hey guys, thanks in advance, I have this moving radar, that detects targets in a specific area, identified by pixels(xtarget,yt...

2 meses ago | 0 answers | 0

### 0

answersQuestion

Find the first element in an array

Hey guys, thanks in advance. I want to find the first element and the last element, besides Nan in the matrix attached how ca...

2 meses ago | 1 answer | 0

### 1

answerQuestion

Create an array of numbers

hey guys, thanks in advance I have this matrix attached , distance_matrix. Basically is the position of a plane along a linear ...

2 meses ago | 1 answer | 0

### 1

answerQuestion

Find minimum in matrice

Hey guys, thanks in advance I have this matrix, that always has zeros, but also other values. I want to find the minimum of the...

2 meses ago | 2 answers | 0

### 2

answersQuestion

Arrays have incompatible sizes for this operation

Hey guys, thanks in advance. Im trying to apply this equation on matlab However i Keep getting this error , arrays have inc...

3 meses ago | 1 answer | 0

### 1

answerQuestion

understanding the reshape function

Hey guys, I dont seem to undertsand what does this mean, I vre read a lot of thing, but this code is not explicit what it does, ...

3 meses ago | 1 answer | 0

### 1

answerQuestion

variable is not saving in a for loop

Hey guys, I want to save xMax3 and yMax3 in two different matrixes, and it has values in each iteration, however with my code, i...

3 meses ago | 1 answer | 0

### 1

answerQuestion

create a matrice in a for loop

Hey guys, thanks in advance, I have this moving radar, that detects targets in a specific area, identified by pixels(xtarget,yt...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Save variable in a for loop

Hey guys, I have this code that correlates two signals with a large amount of samples, each one has 30 million. I want to save t...

3 meses ago | 0 answers | 0

### 0

answersQuestion

Normalize values in a plot

Hey guys, thanks in advance, I have this graph: And I wish to normalize y axis , saying that maximum is 0dB. Im normalizing i...

3 meses ago | 0 answers | 0

### 0

answersQuestion

Save plots in a for cycle

Hey guys, I have this code that correlates two signals with a large amount of samples(30 million). I want to see the plot in the...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Read a matrix between elements

Hey Guys, I need to read two variables, that have a large amount of samples(30 million values). I need to select a thousand val...

3 meses ago | 2 answers | 0

### 2

answersQuestion

reduce values on a vector

Hey guys, I have this code. This two signal have a lot of values(millions) I want to use 1000 values(reference_signal_samples a...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Create a better plot

Heu guys, I have this plot: This plot defines a plane with a radar moving in x axis, from position 0 to position 400. And at...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Azimuth compression Passive SAR

Hey guys, Does anyone Know how to perform azimuth compression, on a passive SAR simulator? Thanks in advance

3 meses ago | 0 answers | 0

### 0

answersQuestion

create a matrix of maximums

Hey guys, thanks in advance, I have this code that correlates in time two signals. The correlation is presented in a matrix(ran...

3 meses ago | 3 answers | 0

### 3

answersQuestion

Create a plot of a signal

Hey guys thanks in advance, Basically I have this code, that for two signals( reference and surveillance) with 30 million sampl...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Find the maximum of matrix and represent in plots

Hey guys, thanks in advance, I have this code that correlates in time two signals. These correlation is made in a matrix 3199 x...

3 meses ago | 0 answers | 0

### 0

answersQuestion

Find a row of the maximum of a matrix

Hey guys, thanks in advance, I have this code that correlates in time two signals. These correlation is made in a matrix 3199 x...

3 meses ago | 2 answers | 0

### 2

answersQuestion

Plot functions in a for cycle

Hey guys, thanks in advance, I have this code , that calculates ambiguity function for signals with a lot of values. On each it...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Create a sliding window

Hey guys, thanks in advance I have this code, that gives me a vector, samples , that has 10 000 000 values( a lot). I wanted to...

3 meses ago | 2 answers | 0

### 2

answersQuestion

Find maximum in graphic

Hey guys thanks in advance; I have this code that represents a signal in time domain: figure; maxcolorbar=max(max(20*log10(ab...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Create a time vector

Hey guys, thanks in advance I have a program that reads samples from hardware, and counts the time it takes to read that sample...

3 meses ago | 1 answer | 0

### 1

answerQuestion

Create a time array

Hey guys, thanks in advance. I have one matrix of data( this is a char data) that has two times : as visible in this figure 'C...

3 meses ago | 3 answers | 0