Search found 13 matches
- Mon Jan 13, 2020 2:30 am
- Forum: Loco Positioning System
- Topic: Loco accuracy
- Replies: 4
- Views: 4012
Re: Loco accuracy
I never worked with the Roadrunner but to me, the error in the localization seems pretty normal and is not the fault of a Kalman Filter or any of its parameters per se. The problem with these UWB antennas is, that the channel impulse response is dependent on the angle of arrival and departure of a s...
- Sat Jan 11, 2020 9:33 am
- Forum: Loco Positioning System
- Topic: Accuracy of Loco Positioning Node
- Replies: 1
- Views: 2961
- Sat Jan 11, 2020 9:26 am
- Forum: Loco Positioning System
- Topic: Loco accuracy
- Replies: 4
- Views: 4012
Re: Loco accuracy
Hi,
I did a project on this topic:
Maybe this helps you out!
I did a project on this topic:
Maybe this helps you out!
- Thu Sep 12, 2019 3:22 pm
- Forum: Loco Positioning System
- Topic: Modifying the loco positioning firmware
- Replies: 2
- Views: 2027
Re: Modifying the loco positioning firmware
I am an ETH student as well and also modified the firmware for my master thesis. I had a similiar issue, but I solved it by changing the return value from MAX_TIMEOUT to an arbitrary integer. Maybe this helps?
- Mon Jul 22, 2019 12:33 pm
- Forum: Loco Positioning System
- Topic: Max Distance Ranging
- Replies: 11
- Views: 5838
Re: Max Distance Ranging
Thanks, let me check if the distance to the ground makes a difference. Btw, is it also normal that the ranging offset changes according to where the tag is placed? In my lab, I have access to a Vicon system in order to measure the actual distance. 1. If I attach the tag on the drone, and I place the...
- Mon Jul 22, 2019 10:59 am
- Forum: Loco Positioning System
- Topic: Max Distance Ranging
- Replies: 11
- Views: 5838
Re: Max Distance Ranging
Here a couple of images on the test: Distance measurement: https://share.icloud.com/photos/0K9dOrLsFMU3mWD0vM_YR1v4g Usual drone attachment: https://share.icloud.com/photos/0I1-7kGWrorAY6pC9kpyy_84g In the second image, you can see my usual experiment. One sniffer node connected to my computer, one ...
- Mon Jul 22, 2019 10:54 am
- Forum: Loco Positioning System
- Topic: Max Distance Ranging
- Replies: 11
- Views: 5838
Re: Max Distance Ranging
Yes, I enabled full power on both tag and anchor. However, since I am planning on attaching one LPS node onto our custom drone, I am not using the crazyflie. Therefore, in my experiment, I am using two LPS as anchor and tag respectively. Additionally, I rewrote the firmware for an additional Sniffer...
- Mon Jul 22, 2019 8:47 am
- Forum: Loco Positioning System
- Topic: Max Distance Ranging
- Replies: 11
- Views: 5838
Re: Max Distance Ranging
I enalbed Force TX Power and set it to maximum (33.5 dB)
- Wed Jul 10, 2019 7:35 am
- Forum: Loco Positioning System
- Topic: Max Distance Ranging
- Replies: 11
- Views: 5838
Re: Max Distance Ranging
I did a few tests myself outdoor on a race track. The furthest distance I was able to get a continuous stream of range data was approximately 25m at max power. However, your investigation lists a max range of 50-70m. How is this difference possible?
- Tue Jul 09, 2019 7:37 pm
- Forum: Loco Positioning System
- Topic: LPS offset not constant
- Replies: 1
- Views: 2245
LPS offset not constant
For my application, I want to measure distances. Hence, I calibrate my LPS pair at a fixed distance and usually get an offset at around 10-15cm. Today, I realized that the offset is 50cm at the same fixed distance, although I didnt change anything at its configurations. Is this possible, that the ra...