I would like to verify the accuracy of the speed measurements from GPS. I know that normally vDops, hDops, and pDops or even accuracy read from the GPS are the sources for checking the accuracy. However, I noticed that in some of my tests, when even the velocity is measured precise enough, the DOPS or accuracy are high (more than 5 or 6). The problem is exactly the measurements after a period of time of NO fix; Imagine a car passing a tunnel, it loses fix and then by exiting the tunnel, the fix becomes 1 again, however the velocity measurements may not be precise enough. I would like to filter these points by means of some other sources rather than accuracy and v or p or hDops.
I read that some articles they talk about SDOP. I would like to know if this SDOP can be a help.
Thank you
أكثر...
I read that some articles they talk about SDOP. I would like to know if this SDOP can be a help.
Thank you
أكثر...