Gender
Male
About
Location
Sydney
About Me:
Currently completing a Ph.D with the Australian Centre for Field Robotics (ACFR).
Please tell us a bit about your UAV interest
My UAV interest began with a final year University project in 2009 where I built and successfully flight tested a low-cost autopilot, based around the Arduino Mega.
Hometown:
Sydney
Activity Feed
"@Thomas Butler: The bias of accelerometers, gyros, barometers, and other mems sensors is affected substantially by temperature. If not corrected, your IMU will be telling you 0.3 m/s/s, 3 deg/s etc when at rest. If you want an accurate state…"
"That's really impressive, well done!"
"Sounds like you've done a lot of work! I think a few things need to be clarified though so here are my 2 cents:
Faster updates rates are better when using discrete sampling since the underlying continuous system can be better approximated - this is…"
Faster updates rates are better when using discrete sampling since the underlying continuous system can be better approximated - this is…"
"@Darius - RTKLIB is just an open source implementation of RTK algorithms that have been used by proprietary systems for some time.
Great module drotek, it looks very nice indeed!
One of the inherent draw backs of single frequency RTK is the time to…"
Great module drotek, it looks very nice indeed!
One of the inherent draw backs of single frequency RTK is the time to…"
"Awesome work guys!"
"@ JB
I suspect you would go through a lot of platforms in the development phase while attempting to retract a quad!
The drogue has a few magnets on the inside and the follower has a metal nose cone with magnetometer inside, but this system is…"
I suspect you would go through a lot of platforms in the development phase while attempting to retract a quad!
The drogue has a few magnets on the inside and the follower has a metal nose cone with magnetometer inside, but this system is…"
"Thanks for the kind words everyone, Ali and I really appreciate it. To address some of the comments:
@Thomas
Modulation is a good idea and definitely necessary if using one marker. We had to use multiple markers to get range information but you…"
@Thomas
Modulation is a good idea and definitely necessary if using one marker. We had to use multiple markers to get range information but you…"
This video shows some recent flight test results from my PhD research on autonomous UAV docking, that was conducted with the Australian Centre for Field Robotics (ACFR) at The University of Sydney. To the best of our knowledge, these experiments are…
"Sorry for the slow reply. I use the beaglebone as a co-processor for my own stm32f4 based autopilot. There are some more details in the videos here and here if you're interested."
"This information is quite valuable, for instance, if the GPS dies, this counter will suddenly skyrocket, or if the GPS UART connection is flakey, you may get sudden intermittent increases, or if you lose lock at high attitude you could use INAVerr…"
"Hi John,
I don't know a lot about the repeater but yes it does repeat Glonass as well. The only problem we have had has been the gain being too high which has hidden problems with interference, then when we take the systems to the field, GPS…"
I don't know a lot about the repeater but yes it does repeat Glonass as well. The only problem we have had has been the gain being too high which has hidden problems with interference, then when we take the systems to the field, GPS…"
"I haven't had time to read all of this so I apologise if it's been said, but I'd like to share some thoughts/experiences.
The GPS signal is extremely weak. Things that jam or severely degrade gps in my experience include some cameras, Wii IR…"
The GPS signal is extremely weak. Things that jam or severely degrade gps in my experience include some cameras, Wii IR…"
"Well if INAVerr counts missed gps measurements, it would definitely increment every second with the strange quirk that Im observing on the m8n. However, less consistent, intermittent missed measurements could be a result of interference, which is a…"
"I don't know what INAVerr means, but I use a csgshop m8n in my own application and have noticed that if it's set to 5 Hz, after receiving 5 measurements it's skips a measurement. I found this by inspecting the derivative of the timestamp where every…"
"Hi Tim, thanks for the update - this will be a great product once it's ready. I don't know much about RTK, except that one of the major challenges of single frequency RTK is fast and reliable resolution of the integer ambiguity. I'm wondering, would…"
