srinath mallikarjunan
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Twin coaxial counter rotating propellers

Started this discussion. Last reply by criro1999 Dec 9, 2013. 3 Replies

HiI would like to have 2 counter rotating propellers on a single drive shaft. Similar to a Kamov but of course powered by much smaller (possibly bldc motors)Does anyone have ideas on the mechanical…Continue

A 3G video call for video and telemetry

Started this discussion. Last reply by David Marra Aug 10, 2012. 6 Replies

Can i send and receive video and telemetry using a modified 3G video call? It should be possible. Any thoughts?Continue

HUD does not stabilize

Started this discussion. Last reply by srinath mallikarjunan Jul 13, 2012. 2 Replies

HiI am using Arducopter-2 with APM-1When i went for a test flight, everything seemed ok at startup, but after i powered the motors, the angles/gyro rates/mag started giving erratic readings even when…Continue

Sending data on a cellular network without connecting to the internet

Started this discussion. Last reply by Jake Stew Jul 15, 2012. 14 Replies

I have been trying to send and receive data using a 2G cell phone network. I wish to communicate the bare minimum needed for telemetry and send waypoints to the uav. I hope that when i graduate to…Continue

 

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Profile Information

About Me:
Control theorist
Please tell us a bit about your UAV interest
Want to build an AHRS/Rate Table/Quad rotor

Srinath mallikarjunan's Blog

DCM versus Kalman filter

Posted on May 12, 2011 at 8:17am 10 Comments

Hi

I notice that attitude estimation is done using the DCM algorithm.
I was wondering if anyone, has tried implementing a Kalman filter for attitude estimation?
The DCM update has a nice intutive feel to it, but i would like to throw in a sound math proof for why it converges. Has anyone worked on this so far?

Regds
Srinath

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