用于空间测绘的高光谱遥感器光轴微振动姿态解算方法  

A method for calculating the optical axis micro vibration attitude of hyperspectral remote sensors for space surveying and mapping

作　　者：李捷斌[1,2] 王宁 LI Jiebin;WANG Ning(Shaanxi Polytechnic Institute,Xianyang,Shanxi 712000,China;Xianyang Key Laboratory of Digital City and Geospatial Big Data Technology,Xianyang,Shanxi 712000,China)

机构地区：[1]陕西工业职业技术学院,陕西咸阳712000 [2]咸阳市数字城市与地理空间大数据重点实验室,陕西咸阳712000

出　　处：《自动化与仪器仪表》2024年第8期19-22,27,共5页Automation & Instrumentation

基　　金：陕西工业职业技术学院校级自然科学重点项目(2022YKZD-004),高校地下管网智能化监测系统研究与应用;陕西工业职业技术学院青年科技创新团队(KCTD2022-01)。

摘　　要：提出用于空间测绘的高光谱遥感器光轴微振动姿态解算方法,通过精准姿态解算准确掌握高光谱遥感器光轴在空间中的姿态变化,便于提高空间测绘图像成像质量。利用光学联合变换相关器(JTC)快速获取空间测绘高光谱遥感图像序列,经基于各向异性扩散模型的图像去噪处理后,依据临近原则对图像序列进行两两分组,并通过联合相关变换方法对组内相邻的参考帧图像和目标帧图像进行相关运算,获取互相关峰,完成像移测量,以像移测量结果为基础,通过姿态解算方法解算两幅图像间的俯仰、滚转方向偏移量,实现高光谱遥感器光轴微振动测量。实验结果显示,该方法图像去噪处理后,可提升图像质量,避免噪声导致的互相关峰钝化;可通过获取两幅图像间的互相关峰测量像移;在俯仰方向和滚转方向的遥感器光轴姿态解算误差均未超过0.20,解算精度较高。Propose a method for calculating the micro vibration pose of the optical axis of hyperspectral remote sensing sensors for space surveying.Through precise pose calculation,accurately grasp the pose changes of the optical axis of hyperspectral remote sensing sensors in space,which is conducive to improving the imaging quality of space surveying images.The optical joint transform correlator(JTC)is used to quickly obtain spatial mapping hyperspectral remote sensing image sequences.After image denoising based on anisotropic diffusion model,the image sequences are grouped pairwise according to the proximity principle.The joint correlation transform method is used to perform correlation operations on adjacent reference frame images and target frame images within the group,obtain cross-correlation peaks,and complete image motion measurement.Based on the image motion measurement results,the attitude calculation method is used to calculate the pitch and roll direction offset between the two images,achieving the measurement of hyperspectral remote sensing optical axis micro vibration.The experimental results show that after image denoising,this method can improve image quality and avoid the passivation of cross-correlation peaks caused by noise;Image shift can be measured by obtaining the cross-correlation peaks between two images;The optical axis attitude calculation error of the remote sensor in both the pitch and roll directions does not exceed 0.20,indicating a high calculation accuracy.

关 键 词：空间测绘 高光谱 遥感器 光轴微振动 姿态解算 互相关峰 

分 类 号：TP751.2[自动化与计算机技术—检测技术与自动化装置] TP202[自动化与计算机技术—控制科学与工程]