Study of Validity of High-Order Small Perturbation Method

TONG Chuang-ming; HUANG Ze-gui; HU Guo-ping

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Study of Validity of High-Order Small Perturbation Method

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- Study of Validity of High-Order Small Perturbation Method
- Acta Electronica Sinica Vol. 35, Issue 9, Pages: 1745-1748(2007)
- 作者机构：
  
  1. 空军工程大学导弹学院,陕西三原,713800
  2. 中国人民解放军驻电子29所军事代表室,四川,成都,610036
  3. 空军工程大学导弹学院陕西三原,713800
  4. 中国人民解放军驻电子29所军事代表室四川成都,610036
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP722.6/P71
- Published：2007
- 稿件说明：
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TONG Chuang-ming, HUANG Ze-gui, HU Guo-ping. Study of Validity of High-Order Small Perturbation Method[J]. Acta Electronica Sinica, 2007, 35(9): 1745-1748.
DOI：

TONG Chuang-ming, HUANG Ze-gui, HU Guo-ping. Study of Validity of High-Order Small Perturbation Method[J]. Acta Electronica Sinica, 2007, 35(9): 1745-1748. DOI：

摘要

通过二维地、海面发射率的研究

研究了高、低阶微扰法的有效性

分析了不同极化方式、表面模型和介电常数的影响

得到了均方根高度的有效范围

给出了高斯模型的相关长度的匹配范围.结果表明

模型差异不影响低阶微扰法求解时均方根高度的有效值

但对高阶微扰法的结果影响很大;高斯模型下

高阶微扰法求解时相关长度的有效值远小于低阶时的结果.理论与矩量法计算及测量值的比较

证明了高阶微扰法的有效性.

Abstract

Validity of small perturbation method (SPM) and high-order SPM (HSPM) is studied by evaluating the emissivity of two-dimensional rough ground and sea surface.The influences of surface model

permittivity and polarization on validity of HSPM and SPM are analyzed.The valid range of root means square (RMS) and correlation length (CL) for HSPM and SPM is obtained from two-dimensional rough surface.Results show that the diversity of different models does not affect the validity of SPM almost

which

however

is not true for HSPM.As for the Gaussian rough surface

the valid range of CL obtained by HSPM is far less than that by SPM.By comparing the simulation results

method of moment results and measured data

it is seen that HSPM is valid.

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