Figure 17.
Estimated positions by different positioning methods in the open area: (a) KNN; (b) PL; (c) FPR; (d) HMM.FPR; (e) HMM.acc; (f) HMM.noacc.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.