Node deployment of wireless sensor networks（WSNs） has large influence on its working performance

a platform for communication and positioning is designed to monitor positions and coverage quality of nodes.WSNs consists of nodes made by BD2 positioning module

nRF905 and C8051F310

and gateway node collects location information by querying each sensor node

and then transmits to remote data monitoring center by BD1 communication satellite.Hardware devices of system are simple which can be widely applied in different kinds of WSNs for position monitoring.