ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Accurate and efficient simulation method and experimental verification of monostatic RCS for aeroengine exhaust systems
Received date: 2022-06-24
Revised date: 2022-07-19
Accepted date: 2022-08-15
Online published: 2022-11-04
Supported by
National Nature Science Foundation of China(61771238);the Project of Key Laboratory of Radar Imaging and Microwave Photonics （Nanjing University of Aeronautics and Astronautics）, Ministry of Education(NJ20220004)
Accurate and efficient electromagnetic scattering simulation method is very important for the design of stealthy aeroengine exhaust systems. In this paper， the Characteristic Basis Function Method （CBFM）， Multilevel Fast Multipole Algorithm （MLFMA）， Interpolation Decomposition （ID） algorithm and parallel technology are combined to simulate the monostatic Radar Cross Section （RCS） of engine exhaust systems. ID can compress the monostatic excitation matrix due to its low rank property， so it can reduce the number of times of solving matrix equations and significantly improve the computational efficiency of the conventional CBFM-MLFMA. To verify the correctness of the algorithm proposed， the axisymmetric exhaust system is machined and its RCS is measured. The simulation results are in good agreement with the measured results， which demonstrates the accuracy of the algorithm.
Xinlei CHEN , Lichang LU , Honghu JI , Changqing GU , Fan GAO , Xiaojuan SHI . Accurate and efficient simulation method and experimental verification of monostatic RCS for aeroengine exhaust systems[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023 , 44(12) : 327676 -327676 . DOI: 10.7527/S1000-6893.2022.27676
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