散射矩陣同時測量的一種新方法
A NEW METHOD OF THE SIMULATANEOUS SCATTERING MATRIX MEASUERMENT
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摘要: 該文提出了散射矩陣同時測量的一種新方法頻域分割法。這種方法的基本原理是:發(fā)射時水平極化天線和垂直極化天線同時發(fā)射兩個中心頻率不同、調(diào)頻斜率相同的線性調(diào)頻信號,中心頻率的差值等于或略大于信號帶寬,接收時上述的兩個天線同時接收,那么每個天線接收的回波是兩個不同極化組合回波的疊加,我們利用兩個回波信號頻譜的差異,將之分離,從而實現(xiàn)散射矩陣的同時測量。這種方法避免了測量不同時以及極化開關(guān)造成的極化耦合而引起的測量誤差,與散射矩陣同時測量的信號編碼法相比,更容易實現(xiàn)高極化隔離度。
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關(guān)鍵詞:
- 極化; 頻域分割; 隔離度
Abstract: This paper explores a new method of the simultaneous scattering matrix measurement-dividing in frequency domain. In this method, two chirp signals with same slope but different central frequency are transmitted simultaneously through two antennas. One is a horizontal polarization antenna and another is a vertical polarization antenna. The dispersion of the two central frequencies is not smaller than the bandwidth of the chirp signals. The return signals are received through two antennas simultaneously. Each... -
D.Guili.L.Facheris. M. Fossi, A. Rossettini: Siundtaneous scatteting matrix mcaserurent throngh sighul coding,IEEE International Radar Conference,Arlington ,1990,258-261.[2]F Aothony,A new system model for rader polarimers,IEEE Trans.on Geosci.Renote Scesing,1991,GRS-29(5):761-767.[3]a.x.Howard,Jakob J van ZYL,Lmaging radar polarimetry.a review.Proc.IEEE.1991.79(1),1583-1606.[4]l.m.j.brown,J.A.Conway J.T.Macklin.Polarimeytic,synthetic-apertrue radar,fundanmental comepts and analysis tools,GEC Journal of research,1991,9(1),23-25.[5]A.Z.Howard.Jakob J Van ZYL.N.H.Danhiel.Imaging radar polarimetry from wave synthesis,Journal of geophysical research,1987,92(B1),683-701.[6]a.Kozma,A.D.Nichols,et al,Multifrequency-polarimetric ASR for retnote sensing,Proc.of GARSS86 symposium,Zurich,1986,715-719.[7]R..L米切爾著.陳訓(xùn)達譯,雷達系統(tǒng)模擬,北京,科學(xué)出版社,1982,20-32. -
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