Application of FDTD to HRRP Generation of a Cavity Model for NCTI Purposes
| Autor: | I. Montiel-Sanchez, David Escot-Bocanegra, David Poyatos-Martínez, Borja Errasti-Alcala, Antonio Jurado-Lucena, Raúl Fernández-Recio |
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| Přispěvatelé: | Instituto Nacional de Técnica Aeroespacial (INTA) |
| Rok vydání: | 2011 |
| Předmět: |
Radar cross-section
Engineering Anechoic chamber business.industry Finite-difference time-domain method Time domain analysis Aerospace Engineering law.invention Software law Frequency domain Finite difference methods Electronic engineering Frequency domain analysis Computational electromagnetics Time domain Electrical and Electronic Engineering Radar business Algorithm Cavity resonators |
| Zdroj: | DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial instname |
| Popis: | The application of a time-domain electromagnetic simulation code to a realistic and challenging problem like the high-resolution range profile (HRRP) generation of an inlet cavity model is presented in this paper. HRRPs can be used to accomplish noncooperative target identification (NCTI) of aircrafts by means of radar, and the database needed in this technique tends to be populated with predicted data obtained with software tools. Most codes employed with these purposes are frequency domain methods, which need multiple simulations at different adequately chosen frequencies, as well as some postprocessing, to get a radar signature. Instead, this paper focuses on finite difference time domain (FDTD) analysis of the response of a cavity, because of the relevance of these parts of an aircraft in the overall signature, and numerical results are compared with measurements performed by the authors in an anechoic chamber. This work also shows the advantages of using an electromagnetic code based on time domain for HRRP generation. The authors thank the members of the North Atlantic Treaty Organization SET-085 group on radar signature prediction of cavities on aircraft, vehicles and ships for their helpful discussions. Also, thanks to Juan Angel Aguilar Rosado and the general workshop at Instituto Nacional de Ténica Aeroespacial (INTA) for their help in the design and fabrication of the mock-ups. This work has been supported by INTA under the Electronic Warfare and Non-Cooperative Target Identification Project. Peerreview |
| Databáze: | OpenAIRE |
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