METHOD FOR THREE-DIMENSIONAL LOCATION OF US TARGETS IN A WIRELESS SENSOR NETWORK BASED ON RECEIVED POWER MEASUREMENTS AND RECEIVED SIGNAL ARRIVAL ANGLES.

摘要

THIS INVENTION RESOLVES THE HYBRID PROBLEM OF RECEIVED SIGNAL STRENGTH (RSS) AND ANGLE OF ARRIVAL (AOA) 3-D LOCATION OF THE TARGETS IN COOPERATIVE WIRELESS SENSOR NETWORKS, Whether or not the transmission power. A CONVEX ESTIMATOR IS PROPOSED THAT BY SUITABLE RELAXATION TECHNIQUE ALLOWS TO OBTAIN A SEMIDEFINITE PROGRAMMING -SDP FOR 3-D LOCATION. A NEW NON-CONVECTIVE OBJECTIVE FUNCTION IS DEVELOPED FROM RSS AND AOA MODELS. THE OBTAINED NON-CONVEX FUNCTION CAN BE TRANSFORMED INTO A CONVEX FUNCTION THROUGH THE APPLICATION OF SDP RELAXATION TECHNIQUES. WHERE IT IS NOT KNOWN PT 'A THREE STEP PROCESS IS PROPOSED TO IMPROVE THE ACCURACY OF THE ESTIMATE. FOR ALL SCENARIOS CONSIDERED, THE NEW ESTIMATORS PERFORMED GOOD PERFORMANCE AND ROBUSTNESS TO THE UNKNOWLEDGE OF PT.