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Improved Analysis Techniques for Prediction of Avionics Electromagnetic Interference and Vulnerability
Navy SBIR 2008.2 - Topic N08-132 NAVAIR - Mrs. Janet McGovern - [email protected] Opens: May 19, 2008 - Closes: June 18, 2008 N08-132 TITLE: Improved Analysis Techniques for Prediction of Avionics Electromagnetic Interference and Vulnerability TECHNOLOGY AREAS: Sensors, Electronics, Battlespace ACQUISITION PROGRAM: PMA-231 - E-2 Hawkeye, ACAT I; PMA-290 - Multi-Mission Aircraft OBJECTIVE: Make significant innovative improvements to physics-based electromagnetic interference and vulnerability tools by incorporating system performance parameters and characterizations of subsystem components within aircraft transmitters and receivers. DESCRIPTION: The goal of physics-based electromagnetic interference (EMI) and vulnerability tools is to allow analysts to accurately predict RF (radio frequency) system level performance in the presence of electromagnetic signals originating from other avionics on the aircraft, high-power transmitters on other aircraft or ships, or even from microwave weapons. To enable accurate predictions the incorporation of field-circuit interaction computational engines and multi-physics simulations linked to model libraries need to be developed and experimentally validated. The model libraries should be capable of using experimentally extracted data when available in addition to idealized responses. For example, models should be developed that enable more realistic filter responses to be used such as bandpass filters with spurious passbands. Native signal analysis should be developed to operate directly on the transient data generated from transient simulations. A validation process is to be performed in parallel with the analysis tool enhancements. The goal of this effort is to develop a robust and accurate tool through comparisons with real world measurements. Initial testing activities should focus on canonical problems that are well defined and controlled. Later the validation should focus on data collected from operational platforms. Experimental validation should be used to refine the specific nature of the performance parameters and characterization to be used. PHASE I: Develop a detailed description of the nature of, and information requirements for, the field-circuit interaction computational engines and multi-physics simulators to be interfaced with the analysis tool. Consideration should be given to how the overall prediction accuracy degrades as the as a function of the level of detail associated model library. Validation is to be done on a variety of canonical problems and limited number of real-world problems. PHASE II: Develop and demonstrate the field-circuit interaction computational engines and multi-physics simulators to be delivered to the Navy. Conduct an extensive experimental validation using canonical circuits representing typical RF system architectures and real-world systems. Lessons learned from the validation should be fed back into the analysis tool. PHASE III: Deliver the analysis tool and thorough documentation to the Navy and provide on-site training. Develop a commercial application suitable for use in evaluating a wide variety of commercial and military systems. PRIVATE SECTOR COMMERCIAL POTENTIAL/DUAL-USE APPLICATIONS: The technology developed under this topic has direct utility to a wide variety of commercial and military electronic EMC and EMI problems. REFERENCES: 1. R. Turlington, Behavioral modeling of nonlinear RF and microwave devices, Artech House Publishers, 1999. 2. P. Crama and J. Schoukens, "Wiener-Hammerstein system estimator initialisation using a random multisine excitation," 58th Automated RF Techniques Group Conf. Digest, Nov. 2001 3. H. Ku, M. D. McKinley, J. S. Kenney, "Extraction of accurate behavioral models for power amplifiers with memory effects using two-tone measurements," 2002 IEEE MTT-S Int. Microwave Symposium Digest, vol. 1, pp. 139-142, June 2002.
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