Does anyone know how they track the position of the communication satellites? I assume they use GPS for the users position, the gyro and accelerometer for device orientation, and then periodically load and update the LEO sat paths on the device when they are connected. Or is the antenna able to estimate LEO position via a signal the LEO sats sends out?
The positions of the satellites are well known and documented. Fun fact..on the Garmin fenix watches, it is recommended that you synch your watch with your Garmin Connect app every few days (week) so that you download the latest satellites position file, which significantly improves the GPS lock time with the satellites before you begin an activity.
As others have stated, I don't think Apple's product will really erode Garmin's market share for several years. The lack of detailed topo maps and applications will severely hamper them.
With Apple latest shift, I see their ecosystem as a very strong contender for business travel (international news reporter?) that requires strong security (lockdown mode), ability to communicate in many form factors through adverse conditions (voice, data and now satellite), and has a slew of safety features (crash detection).
Garmin has decades of experience regarding outdoor travel and safety that Apple would always be playing catchup...IMO.
