Improve gps inaccuracies

ArduCopter Copter 4.0
1

Hello Everyone,

I am very new to this field. Currently, I want to plan a mission using GPS only. I want the relative values of drone with respect to a vehicle. However, I am getting a lot of GPS inaccuracies and drifts with my data. Can anyone help me out with that on how to improve or what parameters can I change to improve ? I am using Mav::Common message(GLOBAL POSITION INIT ) to get the data .It comes with fused accelerometer and GPS values.
Here Tular is my vehicle:
gps_data_logger.txt (200.9 KB)

Screenshot from 2023-09-22 13-14-49
Screenshot from 2023-09-22 13-14-491920×859 162 KB

My standard deviaitonof relative pos in X is around 2 meters
My standard deviaitonof relative pos in Y is around 2 meters
My standard deviaitonof relative pos in Z is around 70cms

2

Have you looked into an RTK base station or an NTRIP server in your area?

https://ardupilot.org/copter/docs/common-rtk-correction.html?highlight=rtk

3

Hello,

Thank you, so much for replying. I don’t know much about this as I am still exploring. However, do I need to buy the RTK base station and its module to use the RTK GNSS system?

4

You’ll either need a base station or depending on your location you may be able to use an online NTRIP service.

Here’s one example of an NTRIP service: http://rtk2go.com/

You’ll also need a GPS module on your drone that will work with RTK systems. Check your GPS manufacturer’s website or data sheet.