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- We sorted the Target files on the basis of distance between the target and landmark. This promoted those lat/long values to the top of the list which were closer to the target. Though any such sorting technique on these values doesn't affect multi-lateration results but it makes a huge impact on tri-lateration results. The reason being the way these two techniques use these values. Multi-lateration considers all values and figures out regions of intersection whereas tri-lateration simply takes three values to find an intersection region. If we have more landmarks and some of them fairly close to the target, multi-lateration will give good results. Even if some values aren't really good, it won't cause multi-lateration to behave in an entirely different way. However in the case of tri-lateration the , better the landmark estimates we have the better the results are. Since we are only considering three values here, even a single one of those three values can make a big difference.
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