About

Gender

Male


About Me:

Auto pilot!


Please tell us a bit about your UAV interest

I am interested in sensor fusion, easpecially DCM and KF.


Activity Feed

Don Kim replied to William Premerlani's discussion robust estimator of the direction cosine matrix
"Hi,
In the DCM, the accelerometers used for the pitch-roll compensator, and the GPS used for the roll compensator. Does anyone know why the GPS did not use for the pitch-roll compensator?
Best regards,
Don"
May 24, 2012
Don Kim left a comment for Paul Bizard
"Could you give me your e-mail please?
I would like to ask you about the EKF."
May 14, 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
Don Kim left a comment for Paul Bizard
"Hi Paul,
I hope I did not disturb much and REALLY thank you so much for your reply. Now I can go forward due to your help.
Best wishes,
Don Kim"
Mar 27, 2012
Don Kim left a comment for Paul Bizard
"Hi Paul,
I totally thank you for your reply. So after Matlab/Simulink simulation, you generated your inputs (COG and SOG from GPS). I wil try to generate these inputs. Do you have any MEX Matlab file or any files to run R.c code.
simstruc.h said…"
Mar 27, 2012
Don Kim left a comment for Paul Bizard
"Hi Paul,
Sorry for not explain well. When I look at 'Direction Cosine Matrix IMU: Theory'.
COGX=cos(sourse over ground angle)
COGY=sin(sourse over ground angle)
COGZ=0
1) The course over ground angle from GPS is used as inputs to compute yaw…"
Mar 27, 2012
Don Kim left a comment for Paul Bizard
"Hi Paul,
I thank you very much for your values even if you have being busy.If you are fine, could you give me any tips or documents how to find the optimal gains please? How can I find speed and course over ground from GPS?
Best wishes,
Don Kim"
Mar 26, 2012
Don Kim left a comment for Paul Bizard
"Hi Paul Bizard,

I am implementing the complementary filter in Matlab based on 'Direction Cosine Matrix IMU: Theory'. William Premerlani said you decided input values. Could you tell me how to decide speed and course over ground from the GPS / the…"
Mar 26, 2012
Don Kim left a comment for William Premerlani
"Hi William Premerlani,
Sorry for replying late. I was away for a week, and really thank you very much for your time and tips. I would implement this design in Matlab. I have sent a message to Paul Bizard but he might be busy to reply my questions. I…"
Mar 26, 2012
Don Kim posted a discussion
After computing orthogoanl X, Y and Z matrix, a Taylor's expansion is used in 'Direction Cosine Matrix IMU: Theory'.Scaling X, Y and Z using a Taylor's expansion,[In the paper]X_norm =  0.5 (3 - dot(X_orth, X_orth)) * X_orthY_norm =  0.5 (3 -…
Mar 15, 2012