Near-Field Effect of Coherent Extended Target Scattering

王丽巍; 吴季; 姜景山

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Near-Field Effect of Coherent Extended Target Scattering

更新时间：2025-12-08

- Near-Field Effect of Coherent Extended Target Scattering
- Acta Electronica Sinica Issue 6, Pages: 47-49(1999)
- 作者机构：
  
  1.   中国科学院空间科学与应用研究中心!8701信箱
  2.   北京
  3.   100080
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP75
- Published：1999
- 稿件说明：
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[1]王丽巍,吴季,姜景山.相干扩展目标散射的近场效应[J].电子学报,1999(06):47-49.

王丽巍, 吴季, 姜景山. Near-Field Effect of Coherent Extended Target Scattering[J]. Acta Electronica Sinica, 1999, (6): 47-49.
[1]王丽巍,吴季,姜景山.相干扩展目标散射的近场效应[J].电子学报,1999(06):47-49. DOI：

王丽巍, 吴季, 姜景山. Near-Field Effect of Coherent Extended Target Scattering[J]. Acta Electronica Sinica, 1999, (6): 47-49. DOI：

摘要

本文对相干扩展目标散射的近场效应进行了研究，通过计算理想情况下由路径相关产生的干涉效应，验证并澄清了扩展目标在不同入射情况下散射干涉的物理机制，并在此基础上引入了浅粗糙面散射的概念．这为准确定标遥感仪器，实现陆基遥感测量的定量化奠定了理论基础．

Abstract

A study has been made on near-field effect of extended target scattering in ground-bed active microwave remote sensing. The analysis is started from path-different-only coherent scattering case. The results show the predicted Fresnel zone interfering phenomenon. This somewhat explains why different measurement results may occur from different platform altitudes. Based on this analysis

we introduced the semi-rough scattering concept to cover more general practical cases.Results of this study may be a foundation for sensors calibration and ground-based accurate measurement in case of coherent extended targets.

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