A lot of research is still going on in finding effective and of course low cost localization algorithms in Wireless Sensor Networks, especially in very noisy/obstructed environments.
We all know the mantra that RSSI based localization scheme is not very effective. So, finding an effective RSSI based localization scheme is a very good area of research.
indoor localization is good area towork towards master and ph.d research
means whether the events are occurring only in specified region or region of interest
indoor localization , say a node is missing or not transmitting , finding path alternatively to base station , identitying it can be research work to begin with
locating unknown node in indoor wireless sensor networks applying indoor localization techniques.
Cooperative localization techniques and how to exploit localization information to improve communications
Yes, indoor localization is a promising research field. An interesting competition on accurate indoor localization can be found here: http://ipsn.acm.org/2015/competition.html
better go tofind problem inoutdoor localization may be used gps locating algorithms andestmiation techniques
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