Héctor García de Marina
  • Male
  • Madrid
  • Spain
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Héctor García de Marina's Page

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liuqiang commented on Héctor García de Marina's blog post Yet another AHRS algorithm
" Could you tell about UKF and TRIAD or could you share the code in matlab? if you dont mind. here is my mail: nuaalq@qq.com"
Oct 30, 2018
Héctor García de Marina commented on Bill Nesbitt's blog post AutoQuad FC fw v6.6
"@Ayush In a GNC scheme (Guidance, Navigation and Control). The N(avigation) module feeds the G and the C. It does not matter the supernice is your controller or guidance if your estimations are far from the actual values."
Jul 8, 2012
Héctor García de Marina commented on Bill Nesbitt's blog post AutoQuad FC fw v6.6
"By the way, will be the hardware schematics open source as well?"
Jul 3, 2012
Héctor García de Marina commented on Bill Nesbitt's blog post AutoQuad FC fw v6.6
"Congratulations Bill, I still hope to have free time for continuing developing this kind of stuff. UKF is a great estimator indeed, I will check out the code for seeing your implementation :P."
Jul 3, 2012
Don Kim left a comment for Héctor García de Marina
"If you do not mind, can I ask you about the UKF by e-mail?"
May 9, 2012
Héctor García de Marina commented on Héctor García de Marina's blog post Yet another AHRS algorithm
"sure, I will contact you by mail"
Mar 26, 2012
Prindi Wibowo commented on Héctor García de Marina's blog post Yet another AHRS algorithm
"thank you for your respond. I'll review your paper on DCM_estimation. could I contact you directly to discuss about it by personal email?"
Mar 26, 2012
Héctor García de Marina commented on Héctor García de Marina's blog post Yet another AHRS algorithm
"Hello Prindi, about TRIAD, you can download the dcm_estimation.pdf. The implementation in Matlab is quite straightforward, you only have to type literally what is in the equations, there is not black magic. Recently the Kalman Filter…"
Mar 26, 2012
Prindi Wibowo commented on Héctor García de Marina's blog post Yet another AHRS algorithm
"thank you Hector for your reply... I'm currently reading your paper on AHRS based on UKF and TRIAD. it's my first time reading on UKF and TRIAD subject, I have implemented obert Mayhony's DCM filter. And now I am struggling with…"
Mar 25, 2012
Héctor García de Marina commented on Héctor García de Marina's blog post Yet another AHRS algorithm
"Hello Prindi, Unfortunately I do not have an English version of the thesis. Nevertheless you can download the paper…"
Mar 25, 2012
Prindi Wibowo commented on Héctor García de Marina's blog post Yet another AHRS algorithm
"hello Hector... Do you have ur Master Thesis in English version? I want it will be my main refrence to understand UKF. thank you :D"
Mar 24, 2012
Héctor García de Marina commented on Chris Anderson's blog post A quad with everything for less than $100
"getting started with a frame that lasts only one crash? xD"
Jan 30, 2012
Héctor García de Marina commented on Max Levine's blog post The easiest way to mount APM2 on ArduCopter.
"@Max All filters (transfer functions) introduces lag (phase delay), and in a closed loop, this lag can lead to instabilty of the closed loop system. One thing is that the lag introduced don't lead to the instability, which as well depends on…"
Jan 25, 2012
Héctor García de Marina commented on Max Levine's blog post The easiest way to mount APM2 on ArduCopter.
"Jonathan, 3-5 times the amplitude mmmm, maybe you are measuring aliasing right? if you are sampling at 50Hz. I am interested in your experiments as I want to try more isolation techniques. Do you mind to share them? :P"
Jan 25, 2012
Héctor García de Marina commented on Justin's blog post Proof of concept cross-wind navigation (and low level) autopilot with vector field surface tracking
"Hello Justin, you are right, this is only a high level guidance algorithm. Actually, I wrote an algorithm based on TVFG (when I am inside the circumference, I put a "mirror" of the vehicle outside to compute the "tangent"…"
Jan 3, 2012
Héctor García de Marina commented on Justin's blog post Proof of concept cross-wind navigation (and low level) autopilot with vector field surface tracking
"By the way, all the simulations are without perturbations. What would happen if the vehicle goes within the circunference? I did a similar algorithm that resolves that case, actually the algorithm is very similar and I explained with simpler maths.…"
Jan 3, 2012

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Héctor García de Marina's Blog

Yet another AHRS algorithm

Posted on July 14, 2011 at 11:00am 10 Comments

 

Although I have been here for years, this is my first blog post and I would like to present yet another attitude estimator which I have been working in my M.Sc. Thesis. A friend of mine and me have developed an autopilot, but this is for another post. However you can find details about it in the thesis at the end of the post. For…

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Comment Wall (3 comments)

At 1:03am on November 23, 2011, John Galczynski said…

Hi,

   I tried http://spacefishproject.com and it did not display nor ping but resolved to ip.

 

Cheers, JG

At 8:24am on November 23, 2011, John Galczynski said…

Oh, spacefishproject.ch -- ahh, the extension changed.  Looks great!  Several years ago, I calc'd out electromagnetic propulsion to get around the planet at low earth orbit levels and high speeds.  The point::travel fast, travel cheap without having to burn chemical fuel and return like a space shuttle. 

At 1:15pm on May 9, 2012, Don Kim said…

If you do not mind, can I ask you about the UKF by e-mail?

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