Hello, I am doing R & D in WSN localization using NetSim and want to know how to get the distance between two nodes and the received power at node x due to node y? Thank you
Dear Jalaj
These two paper are useful for you.
KR
Conference Paper Supporting Location-Aware Distributed Applications on Mobile Devices
Article High performance implementation of RSSI based Wi-Fi location...
Hi Jalaj,
DEVICE_DISTANCE(d1,d2) is the API to get the distance between any 2 devices in NetSim
This declaration is found in Stack.h file. Expand 'External dependencies' in any project in NetSim.sln file to find the Stack.h file.
where d1 and d2 are the device id's
Example :
double TX_RX_distance = DEVICE_DISTANCE(pstruEventDetails->pPacket->nSourceId, pstruEventDetails->pPacket->nDestinationId)
Thank you Saif. Can you also share some important papers using NetSim for WSN?
Thank you Rahul. Please let me know the API for RSSI / SNR also ?
Also, I have a general question regarding localization. Will there be an issue if the 3 anchor nodes are collinear? Because when finding the inverse of the matrix I finding the determinant to always be zero.
Jalaj,
GET_RX_POWER_mw(tx,rx,time) is the NetSim API to get the received power between wireless devices which is available in IEEE802_11_Phy.h.
where
tx is the transmitter Id,
rx is the receiver Id and
time is the current event time (pstruEventDetails->dEventTime)
Example:
double Received_Power = GET_RX_POWER_dbm(pstruEventDetails->pPacket->nSourceId, pstruEventDetails->pPacket->nDestinationId, pstruEventDetails->dEventTime);
Thank you Rahul. I have been able to complete localization in NetSim using RSSI and Trilateration, and get very good results.
I want to know what may be some additional research that can be done on this using NetSim. Is it possible to work on minimizing error? I always get the exact positions. How do I introduce error?
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