GPS Rate and Accuracy

GPS/GNSS Development Boards
1

Hello -

I’m starting work on a new project. I need to track the relative positions of several objects moving at speeds from 0 to 15 mph. One suggestion I’m looking into is using a differential GPS mounted on each of these objects. What is the best I can hope for in terms of the accuracy and update rate from a commercially available GPS module?

Incidentally, it would make my life easier if I didn’t have to mount electronics on these objects, but could track their positions remotely. Assuming that they are moving around in an area a few football fields in size, are there other remote position sensing technologies that I might consider?

Also, while this system must work outdoors, having the possibility for indoor operation would make my life much easier.

Thanks for your thoughts.

2

After doing some more reading, I have some more specific questions.

  • Does anyone have experience with, or models of, GPS multipath issues on large bodies of water?

  • If I have several GPS units operating at the same time, is the drift/error correlated between units?

Thanks!