Search found 7 matches

by Supdan
Mon Sep 16, 2019 12:14 pm
Forum: Quadcopters
Topic: tdoa data of Crazyflie
Replies: 9
Views: 2217

Re: tdoa data of Crazyflie

I believe the LPS is not accurate enough to archive what you want. You need a more high precision system such as the lighthouse or a MoCap system. thank you for your reply! But unfortunately our lab mainly do wireless signal research. Do you think there is a way to improve the accuracy of UWB posit...
by Supdan
Sat Sep 14, 2019 12:16 pm
Forum: Quadcopters
Topic: tdoa data of Crazyflie
Replies: 9
Views: 2217

Re: tdoa data of Crazyflie

Hi, 1. is not possible nor desirable: Either you should use ROS or the crazyflie-python-lib, you will not be able to connect the same Crazyflie with both at the same time. What to use depends a lot of what you are used to and what is your setup: if you are not already familiar with ROS and you do n...
by Supdan
Sat Sep 14, 2019 11:14 am
Forum: Quadcopters
Topic: tdoa data of Crazyflie
Replies: 9
Views: 2217

Re: tdoa data of Crazyflie

Hi arnaud, Here is the thing, we We want to reproduce this video https://www.youtube.com/watch?v=_sUeGC-8dyk ,but We found that the accuracy of the LPS was not enough. When we used the joystick to control an crazyfile, it could not accurately land on the extension of the key. we guess that the LPS s...
by Supdan
Thu Sep 12, 2019 1:51 am
Forum: Quadcopters
Topic: tdoa data of Crazyflie
Replies: 9
Views: 2217

Re: tdoa data of Crazyflie

Hi arnaud, Thank you for your help! Our lab wants to write a fusion algorithm by using UWB's positioning data and The IMU data, and then the location information is sent to the crazyfile, which has obtained a more accurate positioning flight.now i have two plan: 1. Using the crazyfile_demo package t...
by Supdan
Thu Sep 05, 2019 8:44 am
Forum: Autonomous flight
Topic: [SOLVED] ROS EKF Hover fails
Replies: 5
Views: 1330

Re: [SOLVED] ROS EKF Hover fails

Hi toni, I solved the above problem because my anchor uses the tdoa mode, so new problems arise. How do I get tdoa data in ros? In the LPS documentation, twr mode does not apply to multiple crazyfiles, but unfortunately my system needs to use multiple drones. Do you have any idea to help me get tdoa...
by Supdan
Thu Sep 05, 2019 8:11 am
Forum: Autonomous flight
Topic: [SOLVED] ROS EKF Hover fails
Replies: 5
Views: 1330

Re: [SOLVED] ROS EKF Hover fails

Hi toni, I have the same problem as you,I was using 6 anchors in TWR, and one Crazyflie too,but when i run the launch dwm_loc_lms.launch and try to get the data in rosnode "/crazyfile/log_range",it shows all 0,just like this(by run "rostopic echo /crazyflie/log_ranges"): seq: 199 stamp: secs: 156760...
by Supdan
Thu Sep 05, 2019 7:51 am
Forum: Quadcopters
Topic: tdoa data of Crazyflie
Replies: 9
Views: 2217

Re: tdoa data of Crazyflie

Hi dyang,
I want to get the TDoA data in ROS,Similar to the form of a ros node that publishes tdoa data,do you have any ideas?
Thanks in advance!
dan.