I'm doing a project at the college subject de IoT, and I got lost in the math part. I have antennas that I will place in strategic places, and I have an RFID tag that transmits the signal to me, and with that I can know the distance from my tag to my antenna.
But I have several cubes inside that space where my antennas are. And I need to know if my tag is inside which cube. The cubes are projected from the floor to the ceiling of my space. So I guess I don't need to know how high my tag is from the ground, I just need to know if it's within the area of that cube.
My biggest difficulty is that my distances are from the label to a point in space (x, y, z), and then I imagine that I have to do some projection calculation, at (x, z) what my floor would be, and then know if that percentage point that area.
Can someone help me by telling me how many antennas (distance) I need, to know the coordinates (x, z) of my tag?
Knowing this I can do if this point (x, z) belongs to the projection of my cube on the floor. But if someone has a complete and even simpler way, I accept all help.
Thanks in advance, I've been struggling with this for a week, the project is all done, but I can't do this part of the math.