机载干涉SAR系统联合三维定位算法

Q2 Physics and Astronomy
Y. Mao, Xiao-jie Wang, M. Xiang
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引用次数: 1

摘要

:联合三维定位算法旨在同时获取多个相邻干涉合成孔径雷达(InSAR)场景中每个像素点的北坐标、东坐标和高度坐标。联合校准是实现精确三维定位的关键步骤。它可以保证相邻场景之间三维位置的连续性,并利用Tie Points (TPs)实现较少地面控制点(gcp)的大面积定位。本文提出了一种同时标定北坐标、东坐标和高度坐标的机载干涉SAR联合标定算法。采用加权优化方法进行标定,并引入权重进行标定,区分不同相干和位置的gcp和TPs。机载InSAR数据的实验结果表明,采用该方法获得的三维定位精度优于传统方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Joint Three-dimensional Location Algorithm for Airborne Interferometric SAR System
: Joint three-dimensional location algorithms aim to simultaneously obtain the north, east, and height coordinates of each pixel in several adjacent Interferometric Synthetic Aperture Radar (InSAR) scenes. Joint calibration is a key procedure used to achieve an accurate three-dimensional location. It can ensure the continuity of three-dimensional locations among adjacent scenes, and achieve the location of large areas with few Ground Control Points (GCPs) using Tie Points (TPs). In this paper, a new joint calibration algorithm for airborne interferometric SAR that simultaneously calibrates north, east, and height coordinates is proposed. It employs a weighted optimization method to carry out calibration, and introduces weights to calibration to discriminate GCPs and TPs with different coherences and locations. The experimental results for airborne InSAR data show that the three-dimensional location accuracy obtained using the proposed calibration algorithm is better than that obtained using the traditional method.
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来源期刊
雷达学报
雷达学报 Physics and Astronomy-Instrumentation
CiteScore
4.10
自引率
0.00%
发文量
882
期刊介绍: Information not localized
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