I've been playing around with this idea of having a GPS beacon on my sheeps for easily location during their summer time in the mountains. We have the last years been testing out a GSM system for sending GPS positions via the mobile network (GSM / GPRS). Bue sadly due to weak/no mobile signal in many areas, the results hasn't been so good. In many instances the GPS positions doesn't get sent, and therefor the system isn't working as good.
That's where the idea of a GPS beacon comes in, which I wonder might outperform the GSM system due to the lack of signal in these areas. The area is pretty flat, but got some small mountains here and there. The total distance / length of the area the sheep is grassing, is about 10km wide (6.2mi). The duration of the time grassing is about 3 months during summertime.
I've been looking at some long distance beacons and it seems 10km is doable. But maybe that's in flat area with no obstacles (like trees small mountains etc).
So what I'm trying to figure out here, is this doable, and can it be done for lower the price of the GSM system (which is about US$100 per unit).
Just to give a summary of this:
- Track GPS position on each sheep (about 50 sheep in total).
- Distance to sheep, up to 10km.
- Position tracking should occur once a day, or twice, but preferably when we wish to get the location.
- The tracking duration should be about 3 months.
I know this might be a lot, but hope it makes it clear of what I want to accomplish here.
Hope somebody could give some guidance and recommendation on what they think would be best.