Descripción del proyecto
THIS PROJECT COMPRISES SEVERAL RESEARCH LINES UNDER THE TOPIC OF INVERSE ELECTROMAGNETIC TECHNIQUES WITH SOME INNOVATIVE NEAR-FIELD (NF) ALGORITHMS AND APPLICATIONS AND EXPERIMENTAL SETUPS USING ANTENNA MEASUREMENT FACILITIES, DUE TO THE NF ORIENTATION, FULL-WAVE INTEGRAL EQUATION FORMULATIONS WILL BE CONSIDERED, ONE OF THE MAINSTAYS OF THE SET OF PROPOSED TECHNIQUES IN THE PROJECT IS THE SOURCE RECONSTRUCTION METHOD (SRM), IMPROVEMENTS AND APPLICATIONS IN ANTENNA DIAGNOSIS (PROBE CORRECTION, PHASE RETRIEVAL, DETERMINATION OF SAFETY VOLUMES OF BASE STATIONS, SUPER RESOLUTION FOR DIAGNOSIS OF METAMATERIAL ANTENNAS) SHAPE AN IMPORTANT PART (WP 1), BASED ON INTEGRAL EQUATION FORMULATION, INVERSE SCATTERING METHODS ARE PROPOSED FOR MATERIAL CHARACTERIZATION, AND ARBITRARY GEOMETRY IMAGING WITH PROPOSED NF SETUPS FOR NUMERICAL AND EXPERIMENTAL VALIDATION IN REAL APPLICATIONS (WP 2), BASED ON THE STRATEGY AND FORMULATION OF THE SRM, A FULLWAVE COOPERATIVE LOCATION TECHNIQUE FOR NF AND FF CONFIGURATION IIS PROPOSED TO BE DEVELOPED FOR APPLICATION INDOOR LOS AND NLOS SCENARIOS, FOR THE EXPERIMENTAL VALIDATION OF ACCURACY AND USABILITY STUDY 802,15,4 PHY LINK ZIGBEE NETWORK WILL BE IMPLEMENTED FOR RECEIVED SIGNAL STRENGTH (RSS), MULTIFREQUENCY AND PHASE INFORMATION WILL BE CONSIDERED THROUGH APPROPRIATE RF MULTIBAND AS SENSORS, (WP 3), ANTENNA PATTERN SYNTHESIS IS ANOTHER INVERSE ELECTROMAGNETIC TOPIC IN WHICH THE EXPERIENCE OF THE GROUP IS PROPOSED TO IMPROVE NF SYNTHESIS ALGORITHMS, IN PARTICULAR, SYNTHESIS TECHNIQUES BASED ON DATA LEARNING AND SELF-CALIBRATION METHODS ARE PROPOSED, INCLUDING THEIR APPLICATION TO AN NF UHF RFID TAG READING SYSTEM; ALL THIS CONFIGURES OTHER WP (WP 4), IN ORDER TO IMPROVE THE ANTENNA MEASUREMENTS AND SPECIALLY THE SCATTERING MEASUREMENTS OF WP2, THE SPECTRAL ANGULAR ECHO CANCELLATION TECHNIQUES DEVELOPED IN THE LAST YEARS BY THE RESEARCH GROUP (MATRIX PENCIL AND FFT BASED METHODS), ARE PROPOSED MINIMIZING THE BANDWIDTH NECESSARY FOR THEIR SUCCESSFUL APPLICATION, INCLUDING SUPPORT VECTOR REGRESSION (SVR) TECHNIQUES, THEIR IMPLEMENTATION IN NF CONFIGURATIONS AND ITS EXTENSION TO THE KNOWLEDGE OF ONLY AMPLITUDE INFORMATION FOR LOW-COST MEASUREMENT RANGES COMPLETE THIS PART (WP 5), ANOTHER SPECIFIC APPLICATION IS THE IMPROVEMENT OF THE ACCURACY OF THE ANALYSIS AND DESIGN OF REFLECTARRAYS ANTENNAS BY THE USE OF THE SRM TO CHARACTERIZE THE REAL FEEDER AND TO COMPUTE THE ACTUAL INCIDENT FIELD ON THE REFLECTARRAY SURFACE, THE DIAGNOSTIC OF THE REFLECTOR SURFACE FROM MEASUREMENTS AND THE SRM TOGETHER WITH THE USE OF FULL-WAVE MOM METHOD IS PROPOSED TO ESTABLISH ACCURACY BENCHMARKING OF REFLECTARRAY DESIGN TECHNIQUES (WP 6), A TRANSVERSE PART OF THE PROJECT IS DEVOTED TO THE RF/MICROWAVE CIRCUITRY FOR IMPLEMENTATION OF SOME OF PREVIOUS TASKS: OSCILLATOR BASED MULTI-CARRIER SENSORS AND COMPACT MULTIBAND ANTENNAS FOR THE PROPOSED FULL-WAVE LOCATION TECHNIQUES; THE DEVELOPMENT OF INJECTION-LOCKED HARMONIC SELF-OSCILLATING MIXER (HSOM) CIRCUITS FOR DIFFERENT TYPES OF ACTIVE ANTENNAS (RETRO-DIRECTIVE ANTENNAS, BEAMFORMING APPLICATIONS IN RFID SYSTEMS, AND REFLECTARRAYS), (WP 7),FINALLY, OTHER TRANSVERSE RESEARCH LINE IS DEVOTED TO THE IMPLEMENTATION ON SOME OF THE DIRECT AND INVERSE EM ALGORITHMS OF ACCELERATING TECHNIQUES: FMM, DOMAIN DECOMPOSITION AND PARALLELIZATION FOR MULTICORE SERVERS (ESPECIALLY FOR THE SRM), AND THE EVALUATION AND IMPLEMENTATION OF GPU PROCESSING FOR INTENSIVE CALCULATIONS (WP 8) Problema inverso en electromagnetismo\campo cercano\diagnóstico\reconstrucción\localización