Using Desmos, trilateration can be demonstrated. There are some initialization items that must occur. Visualizing the range rings can quickly show where an emitter could be. Introducing errors or changing ranges can also show how easily the data can be adjusted to represent the wrong location or add confusion.
- [Instructor] So trilateration is a bit different.…Using the stack exchange question can get you good info,…though, with a good example and a good breakdown…of what is happening.…So using desmos again,…put in the starting info of the three points…don't forget to set it to degrees.…Start with the above formulas.…To create a circle, the formula should like…x-squared plus y-squared equals a-squared.…
We will make some assumptions, a, b, and c can all be one.…The next phase is to calculate the rays…where the circles intersect.…The easiest thing to do is copy and paste this.…So now let's add some animation.…Configure a, b, and c as shown here.…Hit play on any one of them, there is a lot of inaccuracy…in some cases, but the formula makes assumptions…and gives a reasonably best guess.…
The best trilateration will have…all three rings intersecting.…But there are errors, too, as we already mentioned.…Add these formulas to account for that,…hit play again.…If it gets a bit busy, you can adjust the colors,…and change the arrow lines to dash lines, that should help.…
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- Access points
- Reviewing the concept of geolocation
- Reviewing available products for geolocation
- Use cases