|
|
|
|
  • 软件名称:利用序列ISAR图像获取空间目标3-D信息的方法
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 王峰,徐丰,金亚秋
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

摘要: 如何从空间目标序列性二维(2-D,Two-Dimentional)逆合成孔径雷达(ISAR,Inverse Synthetic Aperture Radar)成像获取目标的三维(3-D)信息,是目标特征自动识别(ATR,Automatic Target Recognition)技术的重要研究课题。利用双向射线跟踪(BART,Bidirectional Analytic Ray Tracing)方法,计算连续多角度观测条件下空间目标的电磁散射数据,并由此获取空间目标的ISAR序列2-D图像。再利用KLT(Kanade-Lucas-Tomasi)特征跟踪算法,跟踪提取2\|D序列ISAR图像中的特征点(强散射点),获得其2-D坐标。然后,基于正交因式分解法(OFM,Orthographic Factorization Method),计算强散射点的3\|D坐标,获取空间目标的3-D信息。通过简单六棱柱模型,验证重构算法的精度;并以ENVISAT卫星模型为例,给出强散射点的3-D重构结果。结果表明,本文对空间目标3\|D信息获取方法能有效地从ISAR序列2-D图像中重构目标的三维信息。  关键词: ISAR成像;  3-D信息;  空间目标;  BART;  正交因式分解法     Abstract: To monitor a space object in ISAR (Inverse Synthetic Aperture Radar) technology,how to extract 3-D information from 2-D imaging is an interesting challenge in ATR (Automatic Target Recognition).A numerical approach,so\|called the Bidirectional Analytic Ray Tracing (BART) method,is first employed to numerically calculate the scattering of a complex object in space,e.g.an Envisat model under different angular positions.And then,the sequence of 2\|D ISAR imaging with angular positions is produced.Kanade-Lucas-Tomasi (KLT) feature tracker is adopted for feature extraction and matching among consecutive ISAR images.3-D positions of featured points are estimated by the orthographic factorization method (OFM).The ISAR image sequence of a simple hexagonal frustum model is simulated firstly.Then,3-D position of corner points are estimated and the result shows good accuracy.Simulated ISAR image sequence of Envisat satellite is taken as an example.The results show that 3-D shape information can be properly acquired from 2-D ISAR image sequence. 

下载说明

·如果您发现该资源不能下载,请通知管理员.gissky@gmail.com

·为确保下载的资源能正常使用,请使用[WinRAR v3.8]或以上版本解压本站资源,缺省解压密码www.gissky.net ,如果是压缩文件为分卷多文件,请依次下载每一个文件,并按照顺序命名为1.rar,2.rar,3.rar...,然后鼠标右击1.rar解压.

·为了保证您快速的下载速度,我们推荐您使用[网际快车]等专业工具下载.

·站内提供的资源纯属学习交流之用,如侵犯您的版权请与我们联系.