I am working on a project that needs tracking location and speed of pedestrians/runners/athletes (so not really robotics, but I see a lot of related usage and posts in the robotics domain, and an answer to this question could help with follower robots). I'm interested in just the 2D location (latitude-longitude).
Using just the GPS position has noisy/jump samples and also the degradation due to multi-path near trees etc. From reading about filtering solutions, I understand that sensor fusion that fuses GPS with the data from inertial sensors (INS) helps improve a lot of these issues. Also, this kind of sensor fusion seems to be used in a lot of places -- robotics, wearables, drones etc. Hence I think there might be off the shelf chips/modules/solutions for this, but I couldn't find any.
I found a sensor hub from Invensense that integrates the 9 dof inertial sensors and comes with the fusion firmware, but it doesn't seem to have hookups and firmware for fusing GPS and providing filtered latitude-logitude.
So, what should I be looking for? Are there any off the shelf chips/modules/solutions that come with the built in sensor fusion Software/firmware for doing GPS+INS fusion?
I understand that it will still need tuning some params as well as some calibration.