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Honglei Chen


MathWorks

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Radar simulation: How to apply a precise delay?
The FreeSpace in Phased Array System Toolbox uses fractional delay fitler to approximate the delay between samples. HTH

10日 前 | 1

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phased.URA 8 by 1 array
This is a linear array, you can consider using phased.ULA to model it. phased.URA requires multiple elements in both dimensions....

10日 前 | 0

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PHASED ARRAY TOOLBOX/ SINUSOIDAL VIBRATING TARGET MODELLING
Nothing off the shelf at this point. This being said, the interface of features in Phased Array System Toolbox are numeric vecto...

20日 前 | 0

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How can i use global2localcoord function with axes?
From what you describe, your x axis is [1 1 0] and your y axis is [-1 1 0]. When yo specify the axes matrix, each colum represen...

21日 前 | 0

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How can I use the constantGammaClutter function to generate the clutter with no ULA
You can set the Sensor property to something like phased.IsotropicAntennaElement and it will generate clutter accordingly. HTH

21日 前 | 0

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How to add zero infront of number
I don't think you can pad zero for a numeric number but you can do it when printing. For example fprintf('num = %02d\n',2) Is ...

24日 前 | 0

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How can I use a matrix to be a loop variable
If you have somethign like mat = {mat1,mat2,mat3,mat4} You can do for m = 1:numel(mat) imshow(mat{m}) end HTH

24日 前 | 0

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sine wave shifted 90 degree
If it's really just a sine wave, you can consider hook it up with a integrator. HTH

26日 前 | 0

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How to determine the rotation matrix for rotating one vector to align with another ?
There is no special meaning of rotvv other than it's one of the implementation to rotate one vector to be parallel to another on...

27日 前 | 0

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Replace two-way propagation channel with two one-way propagation channels
This may have to do with your target location. The channel delays signal based on the distance. However, when the travel time is...

27日 前 | 0

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XCORR function to find the lag time between two signals
We probably need a bit more info to understand why the lag is always the same. But by default xcorr returns the delay in lags, t...

約1ヶ月 前 | 0

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Error with the "Design an Internally Matched Ultra-wideband Vivaldi Antenna" example
You will need to open the example in MATLAB. In there you should have a button labled as "Open Example" or something close. When...

約1ヶ月 前 | 1

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the element in radarObjects mean in Forward Collision Warning Using Sensor Fusion
The radarObject output is a detection, therefore it contains the information from the detected signal. If you have data from the...

約2ヶ月 前 | 0

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Frost beamformer internal calculations
Yes, the code is available to see if you do edit phased.FrostBeamformer The constraint is simply to return a distortion less ...

約2ヶ月 前 | 2

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simulating RWR in R2016a
If you open the example in MATLAB and click "Open Example" button, all files assoicated with the example will appear in the temp...

約2ヶ月 前 | 0

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Possible to obtain ultra wide band monostatic radar model?
There is a wideband radar example at https://www.mathworks.com/help/phased/examples/modeling-a-wideband-monostatic-radar-in-a-m...

約2ヶ月 前 | 1

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reading at UCA elements
Why would you say taht at least one antenna should not receive the signal? You are using isotropic element in the array so every...

約2ヶ月 前 | 0

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phased.RangeDopplerResponse axis scaling
The input of RangeDopplerResponse is a matrix reprsents fast time and pulses. Therefore, if you have a TDM MIMO radar, you can e...

2ヶ月 前 | 0

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How to simulate automotive radar?
Have you looked at the following example? Would that be at the level you are interested? https://www.mathworks.com/help/phased/...

2ヶ月 前 | 0

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constantGammaClutter function usage?
These are high level steps but they look ok. I don't quite understand the last step though. What do you mean by "output of the c...

2ヶ月 前 | 0

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Replicated.subarrays with taper
If you want to apply taper on the entire aperture, it might be easier to use the phased.PartitionedArray interface. You can then...

2ヶ月 前 | 0

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The sequence to call beamforming and receiver ?
In Phased Array System Toolbox, receiver models thermal noise at the receiving elements so beamformer should happen afterwards. ...

2ヶ月 前 | 0

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I want to learn the phased array antenna with Matlab
I would start with the following page https://www.mathworks.com/academia/student_version.html HTH

3ヶ月 前 | 0

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Linear 45 degrees polarized antenna element
In R2018b, there is no easy way to specify a 45-degree short dipole. The easier way to achieve that is probably combine the fiel...

3ヶ月 前 | 0

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[Phased Array Toolbox] Modelling an unmodulated continuous wave radar
A radar system is probably modulated. Since the modeling is done in baseband, for a single frequency continuous wave, that will ...

3ヶ月 前 | 0

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Do I need a receiver channel when I using ULA?
The receiver also models the thermal noise in the receiver. If you need to include that effect, then you should not skip the rec...

3ヶ月 前 | 0

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How to use Signal Analyzer App inside of a script
Signal analyzer is capable of generating MATLAB script so you can run the script to accomplish what you did in the app. Maybe th...

3ヶ月 前 | 0

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Plot RangeAngleResponse of ACC Example
It looks like you are using the first part of your code to generate xr and then the second part to do range-angle processing? If...

3ヶ月 前 | 0

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parameters for backscatterRadarTarget and its target
For question 1, the answer is no. However, the RCS pattern is only defined within the range specified by azpatangs and elpatangs...

3ヶ月 前 | 1

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