Autopilot algorithms

[skogsvargen]

I am in the "information gathering phase" of my UAV design and building project. It's a hobby project and one of the decissions i have to make if i should go for a commercial AP or try to develop my own buying only a INU or maybe going for a thermophile to begin with.

The features i guess I will need to begin with:

Keeping the UAV level in roll and pitch
Heading hold with compass or GPS input
Altitude hold
V/S
Speed hold

Having this i should be able to develop a main CPU that navigates the UAV using these basic commands.

So , whats my questions?

- Can anyony point me to some information about how to implement the AP-algorithms?

- Are there any projects that are trying to implement an open source AP based on an INU? (exept Paparazzi and RCAP)?

- Any other advice is appriciated!

/Magnus, Stockholm Sweden

I am new in this forum so I apologize if I ask questions that has been covered before.