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基于時(shí)域的低頻UWB SAR輻射校正

鄒鯤,  梁甸農(nóng)

鄒鯤, 梁甸農(nóng). 基于時(shí)域的低頻UWB SAR輻射校正[J]. 電子與信息學(xué)報(bào), 2005, 27(9): 1379-1382.
引用本文: 鄒鯤, 梁甸農(nóng). 基于時(shí)域的低頻UWB SAR輻射校正[J]. 電子與信息學(xué)報(bào), 2005, 27(9): 1379-1382.
Zou Kun, Liang DianNong. Calibration for Low Frequency UWB SAR Based on Time Domain[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1379-1382.
Citation: Zou Kun, Liang DianNong. Calibration for Low Frequency UWB SAR Based on Time Domain[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1379-1382.

基于時(shí)域的低頻UWB SAR輻射校正

Calibration for Low Frequency UWB SAR Based on Time Domain

  • 摘要: 低頻UWB SAR系統(tǒng)校準(zhǔn)的關(guān)鍵問(wèn)題是獲得定標(biāo)體精確的散射特性和建立合適的信息處理模型。本文利用MOM和漸近波形估計(jì)（AWE）方法得到隨頻率和方位角變化的角反射器RCS，建立了基于時(shí)域聚焦算法的校正模型，最后利用計(jì)算機(jī)仿真驗(yàn)證了該方法的有效性。
    Abstract: The key problem of calibration for low frequency ultra wide band synthetic aperture radar system is the acquisition of the scattering information of calibrators and suitable signal processing model. In this paper, the RCS of trihedral triangle reflector changing with the frequency and aspect angle is obtained using methed of moment and AWE method, and the calibration model is proposed based on time domain. The computer simulation is used to verify this calibration method, and result is agreed with the theory analysis.
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  • Curlander J C, McDonough R N. Synthetic aperture radar system and signal processing. NewYork: John Wiley Sons, Inc. 1991:323 - 364.[2]Norbert G, Ressler M A, Carin L. Wide-band VHF scattering from a trihedral reflector situated above a lossy dispersive halfspace[J].IEEE Trans. on Geoscience and Remote Sensing.1999,37(5):2609-[3]Freeman A. SAR calibration: an overview[J].IEEE Trans. on Geoscience and Remote Sensing.1992, 30(6):1107-[4]Dobson M C, Ulaby F T, Brunfeldt DR, et al.. External calibration of SIR-B imagery with area extended and point targets[J].IEEE Trans. on Geoscience and Remote Sensing.1986, 24(4):453-[5]Larson R W, Jackson P L, Kasischke E S. A digital calibration method for synthetic aperture radar system[J].IEEE Trans. on Geoscience andRemote Sensing.1988, 26(6):753-[6]E F.克拉特著,阮穎錚譯.雷達(dá)散射截面-估計(jì)、測(cè)量和減縮.北京:電子工業(yè)出版社,1988,第二章.[7]Rao S M, Wilton D R, Glisson A W. Electromagnetic scattering by surfaces of arbitraryshape[J].IEEE Trans. on Antennas and Propagation.1982, 30(2):409-[8]Cockrell C R, Beck F B. Asymptotic waveform evaluation (AWE)technique for frequency domain electromagnetic analysis, NASA Technical Memorandum 110292, 1996.[9]Milman A S. SAR Imaging by wk migration[J].Int. J. Remote Sensing.1993, 14(10):1965-[10]McCorkle J W. Focusing of synthetic aperture ultra wide-band data. Proc. IGARSS89, Vancouveer, 1989:1 - 5.[11]Soumekh M. Reconnaissance with UWB SAR[J].IEEE Signal Processing Magazine.1995, 12(4):21-[12]劉永坦.雷達(dá)成像技術(shù).哈爾濱:哈爾濱工業(yè)出版社,1999,第四章.[13]鄒鯤,梁甸農(nóng).低頻UWB SAR天線方向圖校準(zhǔn)算法.信號(hào)處理,2005(4).
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出版歷程
  • 收稿日期:  2004-04-12
  • 修回日期:  2004-09-17
  • 刊出日期:  2005-09-19

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