Help: IMU & GPS tracking of an aerobatic model    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version



All Forums >> RC Airplanes >> FPV, UAV''s & Drones >> Help: IMU & GPS tracking of an aerobatic model
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
Help: IMU & GPS tracking of an aerobatic model - 11/15/2012 5:30 PM   
Pelizzone


 

Posts: 5
Score: 100
Joined: 8/12/2002
Last Login: 5/21/2013
From: Geneva, SWITZERLAND
Status: offline 		Hi to all who can advise/help,

I am an F3A model aerobatics fan.
My goal: Get objective and accurate data about the flying path of the model, to train and get used to respect the F3A rules.
Of course this is an help for training and is not permitted during competitions.

I already made experiments to track accurately the flight path an aerobatics model airplane with a small GPS. I have tried several small (less than 100gr), fast (at least 5Hz sampling), cehap (ca. 100.- USD) GPS data loggers.

It works superbly most of the time with enough sampling rate (5Hz) and accuracy to do what I want. However, since the airplane is constantly changing attitude respective to the sky (and therefore satellites) about 30% of the data “jump slightly out of the real track”.
For a perfect application, these "jumps" are not acceptable !

I assume "jumps" are due to the directionality of the small patch antenaes the devices are using. Due to the rapid attitudes changes of the plane, “good” strong satellite signals are constantly changing and the software either loose signals or at least take time (typically seconds) to adapt to the new satellite distribution.

QUESTIONS:
(1) Are my assumptions (loss or rapidly varying signals due to the directionality of the antena) corrrect as the cause of the problem?
(2) Do small (<100gr), fast (at least 5H), standalone GPS trackers exist on the market that do implement an OMNI-DIRECTIONAL antena ?
(3) Are other solutions (e.g. addition of inertial sensors to the GPS) available to solve my problem ?

If this can be solved, it would be of great interest to my community of model aerobatics fanatics.

Thank you in advance for helping me.
Marco.




Marco F3A Aerobatics Fan


Hide Signatures
       Post #: 1

Page:   [1]
All Forums >> RC Airplanes >> FPV, UAV''s & Drones >> Help: IMU & GPS tracking of an aerobatic model
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.719RCU1