Sounds like you are doing some UAV work. Do you have a web page or more info on your project? I'd be very interested to hear more details of how you are leveraging FlightGear as part of your ground station. I've got about 100 million ideas myself, but have only had time to try a few simple things.
Yes, my enterprise is working on UAV project for a big brazilian aeronautic reasearch institute (IEAV-CTA Advanced Studies Institute of Aerospatial Technology Center). The first six months of this year I've developed the Autonomous Navigation System for embedded systems using FlightGear as platform base for a real UAV. Today the navigation system already working and flying fine using FlightGear.
The last six months of this year I'll be working with Ground Station development and the basic idea is provide some information about UAV flying, like UAV position, communication status, working status of all UAV subsystems, UAV camera simulation using Flightgear.
The flightgear runs in dedicated machine, then I've developed a FlightGear Camera (simulating UAV camera) and now Ground Station is capable to follow the UAV using this camera. I'm working with modified version of FlightGear that enables the jpg-httpd command line option (the only one modification).
I can see that FlightGear's jpg-httpd screen capture feature is unfinished and not working perfectly, causing memory leaks and working toooooooo slow to capture only a little piece of flightgear window (Am I right ???).
Then I've done some modifications to jpg-httpd.cxx and jpg-httpd.hxx modules to fix the memory leaks and complete rewrite of streaming method and now works very fine, and I could see that JPG streaming now can send the complete flightgear screen in excellent update rates (for human eyes, almost so fast as FlightGear).
If you want send me suggestions about Ground Station, please do it, you are welcome.
About the page of Project, is in development and soon I'll send to you.
Thank you by attention and interest.
Regards,
Leidson Campos
PlanetaMessenger.org
On 10/19/06, Curtis Olson <[EMAIL PROTECTED]> wrote:
On 10/19/06, Leidson Campos A. Ferreira <[EMAIL PROTECTED]> wrote:Hi Curtis,
Thanks by quick response.
In fact my code was wrong, because I wrote wrong properties values to /autopilot/locks/speed = speed-with-throotle instead speed-with- throttle, then never turn on the speed with throttle autopilot option.
Hehe, that's one thing I've learned to check when things don't work as expected. With properties, the compiler can't spell check variable names at compile time so typos can creep in. When something doesn't behave as expected, it's worth looking in the property tree while the code is running to see if any new properties (with similar, but not quite exact spellings) have appeared.
This feature is important to my ground station and it now can instruct FlightGear to use the manual flying or our autonomous navigation system to fly.
Sounds like you are doing some UAV work. Do you have a web page or more info on your project? I'd be very interested to hear more details of how you are leveraging FlightGear as part of your ground station. I've got about 100 million ideas myself, but have only had time to try a few simple things.
Best regards,
Curt.
--
Curtis Olson - University of Minnesota - FlightGear Project
http://baron.flightgear.org/~curt/ http://www.humanfirst.umn.edu/ http://www.flightgear.org
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