Showing posts with label wireless localization. Show all posts
Showing posts with label wireless localization. Show all posts

Wednesday, July 3, 2013

Wireless Localization Technique

Do you ever wonder how application like Google Map can predict your position? GPS? If we do not have GPS coverage, what technique can we use to predict location?



This post cover explanation about how wireless localization technique work, and we will give some example of  common localization technique in wireless system.

How Most Localization Technique Work?

In order for wireless localization technique to works we need to have a reference points which location is known. The best practice is follow n+1 reference points for n dimension coordinate. So when we want to predict location in 2-dimension coordinate (x,y coordinate) we need at least 3 reference points and  if we want to predict location in 3-dimension coordinate (x,y,z coordinate) we must have at least 4 reference points. These reference points should not located inline one and another for best location accuracy.