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Closed 9 years ago.
I have a requirement where in I need to simulate a radar in real time. I am yet to start with Phased array system toolbox (waiting for evaluation license), but I had few questions about the this toolbox. It will be really helpful if you can answer them.
Does the tool box supports real time simulation
Support for the environment. What environmental factors it takes into consideration.
Support for fluctuating RCS.
Support for tracking the targets.
Support for transponder and skin modes.
I will start with the study once I get my hands on the toolbox but till then any inputs here will be greatly appreciated.
Phased Array System Toolbox is a very niche product, and I doubt you'll find much experience with it available on StackOverflow. Even within MathWorks there are only a handful of people who know anything about it.
Nevertheless, I would recommend that the best (in fact only) way to find out any details of it would be to contact MathWorks directly. If you'd rather not contact them via Sales yet, you can contact John Zhao, the Phased Array System Toolbox Technical Expert (one of the handful described above) directly via the product's Contact The Expert page.
I can tell you that since it is a System Toolbox, it will be providing much of its functionality via System Objects, which are typically designed to support real-time code generation when used together with MATLAB Coder. I have no idea about your questions 2-5.
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Closed 10 years ago.
I'm getting interested in PLC programming and my idea is to just try it. Therefore I need to simulate some real system, because it's to soon to look for some hardware. This is how I wish to do it (example):
Simulate some real system, ie. water tank with bleed and inlet valves, some water level sensor of course. These are controled and checked by PLC.
PLC simulator to control valves and get values from sensor. Also send data to some HMI/SCADA (PLCsim ?)
Some software to program the logic into PLC. (Step7 ?)
Some GUI for end user to check values and control valves manually (InTouch ?, ControlWeb ?, WinCC ?, LabView ?)
I don't know if this is possible completely by using software and if there is a chance it will work. Your advices and ideas are appreciated.
Thanks
Definitely. If money is an issue, AutomationDirect.com has a new product called Do-more where the programming software is free (called Designer) and it comes with a free PLC simulator.
I would then recommend writing separate code-block(s) to simulate "the process", where the code-block(s) READ from Outputs (discrete and analog) and WRITE to Inputs (discrete and analog) based on the Output states (and time, and random external events - think butterfly effect).
Disclosure: I work for Host Engineering, developers of Do-more.
If money is NOT an issue, I know there are lots of PLC Simulators and Process Simulator software out there that somebody can probably recommend.
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Closed 10 years ago.
I am learning Image processing/Pattern recognition. My background is C++ and basics in OpenCV.
I am looking for a tool to learn how to test all the filters and algorithms on my images easier. Are Matlab and Mathematica suitable for this? If so, which one is better?
Thank you!
You can do great image processing in both languages, so there is no general answer to this question.
In your specific case, assuming that you have access to all the relevant toolboxes of both packages, I recommend Matlab, since its syntax is more similar to C++ than Mathematica's functional syntax. Consequently, Matlab may be easier for you to pick up. Note that many filters are already implemented in Matlab, and I assume also in Mathematica.
One of the Matlab blogs has just started a series on image filters. Also, you could try and adjust the MorphTool from the File Exchange to be able to play with the filters you're interested in.
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Closed 11 years ago.
I want to build an iOS application that recognizes patterns in a cup of coffee.
For example http://en.wikipedia.org/wiki/File:Coffereading.jpg .
This image recognition script could run on the client side (iphone eventually) or on server side.
The goal of the app is to take a picture of a cup of coffee, analyse patterns,
and compare them with images/patterns that are already stored in a database, and return the most appropriate one
I have no experience in this field and after doing some research, I found some libraries that might help me do this: openCV, kooaba, snaptell, and server side libraries like afroge.net.
This confused me alot. I want to know if this is possible using libraries like the ones above, or any other one. And how much time/effort should be given if any modification should be made on one of those in order to achieve my goal
You can also read more information about reading fortune under this link: http://en.wikipedia.org/wiki/Tasseography
In short: It can be done with OpenCV. You can use it to recognize the coffee cup (circle and/or square detection). After that you have to take a look at "feature detection" (SURF ist a good way to go) to match the coffee patterns.
Yes, it can be done. But it's a huge topic and very complex.
Your best bet is to license third party code that will handle all the difficulties for you.
Take a look at this library available for iOS by Mataio:
metaio | Software | Augmented Reality 3
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Closed 11 years ago.
I have seen Operating Systems described as "the software that controls the hardware". I don't understand what it really is however.
For example, if we are writing code for a calculator, if we write the code to implement the interface between the LCD and KEYPAD, that code is not considered an operating system is it?
what really does "Operating System" mean?
Jack, the wikipedia page on operating systems gives a pretty good overview to start with. To put it pretty simply, when you want to run multiple pieces of software on a single piece of hardware (in your case, the ARM chip) then something needs to control the access to the hardware. The operating system will schedule tasks and allocate hardware to allow the multiple different bits of software to co-exist peacfully. Without this control, there is no way to run multiple pieces of software at once. Your calculator example would not require an operating system, as it is a single piece of code to do a single job.
For compilers for the ARM devices, I would suggest looking at either GCC (which I believe can cross compile to ARM) or getting a development kit, which will likely come with a suite of tools to allow you to develop on it.
I'm afraid I can't help you on which version of ARM chips to choose though, as my experience with them is a little limited. If price of the hardware is an issue though, I believe the ARM 7 hardware will be cheaper, but it is always worth comparing.
Hope this helps.
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Closed 11 years ago.
Let's say you need to rewrite a university website, the key feature being the ability to give certain users permission to edit certain parts of the site, and the editing would all have to happen in-browser.
I've been searching around, looking at various CMSs that fit the build here, but I'm wondering what your opinions are.
So, if you were to have to rewrite the system i described above, what CMS would you use? If none fit the build, would you suggest rolling your own instead?
My immediate reaction was: WordPress. It's currently at 3.1.2 and is a far cry from the simple blogging software it started as. Starting with V3 it took a strong step toward being a CMS. Its multisite feature supports multiple-sub-websites (e.g. for different departments), and it has reasonable support for role-based ACL. It has built-in WYSIWYG editing, and something over 12,000 extensions to had various types of functionality.
Something to remember is that many college sites are being supported by "whoever hasn't graduated yet." This makes long-term maintainability of the core code an important consideration. This is another check in the Win column for WP.
One word of warning: only consider themes that are strongly oriented toward V3+. Also note that themes are more than just a paint job -- they can add major chunks of task-specific functionality. Once you commit to using a theme you may find it challenging to switch to another without a certain amount of local customization.
WordPress is not perfect, but it may be everything you need. Check it out. It's free, extensible, and you clan play with it over a weekend and get a feel for how well it solves your problem.
Your stated requirement is surely available in almost any CMS you care to mention.