Search found 9 matches

by jdiep
Mon Jul 22, 2019 12:33 pm
Forum: Loco Positioning System
Topic: Max Distance Ranging
Replies: 11
Views: 825

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...
by jdiep
Mon Jul 22, 2019 10:59 am
Forum: Loco Positioning System
Topic: Max Distance Ranging
Replies: 11
Views: 825

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 ...
by jdiep
Mon Jul 22, 2019 10:54 am
Forum: Loco Positioning System
Topic: Max Distance Ranging
Replies: 11
Views: 825

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...
by jdiep
Mon Jul 22, 2019 8:47 am
Forum: Loco Positioning System
Topic: Max Distance Ranging
Replies: 11
Views: 825

Re: Max Distance Ranging

I enalbed Force TX Power and set it to maximum (33.5 dB)
by jdiep
Wed Jul 10, 2019 7:35 am
Forum: Loco Positioning System
Topic: Max Distance Ranging
Replies: 11
Views: 825

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?
by jdiep
Tue Jul 09, 2019 7:37 pm
Forum: Loco Positioning System
Topic: LPS offset not constant
Replies: 1
Views: 626

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...
by jdiep
Fri Jun 28, 2019 10:46 pm
Forum: Loco Positioning System
Topic: Max Distance Ranging
Replies: 11
Views: 825

Re: Max Distance Ranging

perfect, havent seen that yet. thanks a lot, cheers!
by jdiep
Wed Jun 26, 2019 11:34 pm
Forum: Loco Positioning System
Topic: Max Distance Ranging
Replies: 11
Views: 825

Max Distance Ranging

Hi,

I would like to use the LPS to positioning a drone outdoor on a football field. Does someone knows what the max ranging capacity of the LPS nodes are? And also are there any research done considering optimal anchor placement?

Thanks in advance!
by jdiep
Sat Apr 20, 2019 2:55 am
Forum: Loco Positioning System
Topic: Range Calibration considering orientation
Replies: 1
Views: 263

Range Calibration considering orientation

In my project, I am using 8 LPS anchors with one LPS tag attached to our drone (not a CF). In a first step, I want to calibrate the entire system, which includes figuring out the range offset, tag positions as well as anchors positions by applying Gauss-Newton. However, I discovered, that the offset...