用MBPE快速計(jì)算三維導(dǎo)體RCS的頻空特性
Applications of MBPE for RCS Fast Calculation of 3D PEC Objects
-
摘要: 該文系統(tǒng)研究了MBPE技術(shù)求解三維理想導(dǎo)體雷達(dá)散射截面(RCS)的寬頻帶特性。通過(guò)把電流在感興趣的頻率點(diǎn)處采用泰勒級(jí)數(shù)或者Pade有理函數(shù)展開(kāi)，來(lái)獲得理想導(dǎo)體某頻帶范圍內(nèi)的電流，從而可求出寬帶雷達(dá)散射截面。同時(shí)，該文還將有理逼近應(yīng)用于RCS的空域和頻域雙內(nèi)插。數(shù)值結(jié)果表明MBPE技術(shù)獲得的結(jié)果與確切解在寬頻帶、大角度范圍內(nèi)吻合良好，計(jì)算效率大大提高。
-
關(guān)鍵詞:
- MBPE; 雷達(dá)散射截面; Pad有理函數(shù)
Abstract: An implementation of the Model Based Parameter Estimation(MBPE) tech-nique is presented for obtaining the RCS frequency response of arbitrarily shaped Perfect Electric Conductor (PEC) bodies. The electric current is expanded in a Taylor series or Pade rational function around the frequency of interest, thus the -scattering field is obtained over the bandwidth. Rational function fitting model is also used for the interpolation of RCS in both spatial domain and frequency domain. A good agreement can be seen between MBPE and the exact solution, and the computational burden is significantly reduced. -
Reddy C J. Application of model based parameter estimation for RCS frequency response calculations using method of moments. NASA/CR-1998-206951.[2]Rao S M, Wilton D R, Glisson A W. Electromagnetic scattering by surfaces of arbitrary shape.IEEE Trans. on AP, 1982, AP-30(3): 409-418.[3]Reddy C J. Application of AWE for RCS frequency response calculations using method of moments. NASA Contractor Report 4758, October 1996.Cockrell C R, Beck F B. Asymptotic Waveform Evaluation(AWE) technique for frequency domain electromagnetic analysis. NASA Technical Memorandum 110292, November 1996.[4]Werner D H, Allard R J. The simultaneous interpolation of antenna radiation patterns in both the spatial and frequency domains using modal-based parameter estimation. IEEE Trans. on AP., 2000, AP-48(3): 383-392. -
計(jì)量
- 文章訪(fǎng)問(wèn)數(shù): 2387
- HTML全文瀏覽量: 132
- PDF下載量: 576
- 被引次數(shù): 0
下載:
