Is it possible to track the exact movement of an object?

Question

Do it yourself

There is a copter, there is a building, you need to track its exact movement and, if possible, to the millimeter. Is it possible? And can a student pull it (in a financial sense)?
Thanks in advance!
UPD: mobility is not important (in the sense that the copter will always be in this building (50x200x6)), accuracy is important

Answer 1

We take 3 receivers at 433 or 900 megahertz, place them at 3 points in space, the object constantly sends data to all receivers, every 50 ms, for example. By the delay in obtaining data, we determine the position using triangulation.
This is a general scheme, quite cheap, the accuracy will limp with interference on the radio channel. But perhaps everything can be done.

Answer 2

If to a millimeter - I would rely on some rangefinders that will be mounted locally. That is, mobility will be limited - increased accuracy only within the location of the special. measuring technology.
Wireless options that are not rigidly tied to geography - do not give such accuracy
. When we want to increase accuracy - all this develops into very, very expensive solutions.
https://habrahabr.ru/post/318894/

Answer 3

Here already prompted about radio communication. I’ll slightly add AT86RF233
, for example, allows you to measure the distance between modules, but you will have to write all the mathematics with pens.
A few years ago, at work, they advertised a radio network with the ability to determine distances, but I don’t even remember the name :(

Answer 4

You can track the copter with cameras from several angles. Most often, this method is used in projects like this: https://youtu.be/XxFZ-VStApo   https://youtu.be/w2itwFJCgFQ
Any GPS-like technologies do not provide millimeter accuracy in real time. And cameras are now cheaper than the vast majority of radars.