Author Archives: odtu_ee

A note on the strapdown algorithms

Probably you have noticed that the strapdown implementations in the toolkit directly use the sensor outputs to compute the body updates. For instance, accelerometer outputs (a) are multiplied by the DCM (C) and then added to the velocity state. Those … Continue reading

Posted in Android, IMU, INS | Leave a comment

Implementing a GPS/INS without a math-coprocessor

Recently, I have implemented (embedded) a GPS-INS system in the native environment of my Android phone (a 2.5 years old HTC Hero). The embedded navigation code is capable of processing external inertial sensor and GPS outputs sent to the device … Continue reading

Posted in Android, INS | Leave a comment

Hello world!

Imaginations on the imaginary axis cause cyclo-stationary responses.

Posted in Uncategorized | Leave a comment