基于高頻角位移數(shù)據(jù)的衛(wèi)星平臺顫振檢測與影像幾何質(zhì)量補償

胡堃; 黃旭; 張永軍; 尤紅建

doi:10.11999/JEIT170990

基于高頻角位移數(shù)據(jù)的衛(wèi)星平臺顫振檢測與影像幾何質(zhì)量補償

doi: 10.11999/JEIT170990 cstr: 32379.14.JEIT170990

^①(中國科學院電子學研究所北京 100190) ^②(中國科學院空間信息處理與應(yīng)用系統(tǒng)技術(shù)重點實驗室北京 100190) ^③(俄亥俄州立大學土木、環(huán)境與大地測量工程系美國哥倫布市 43210) ^④(武漢大學遙感信息工程學院武漢 430079)

基金項目:

國家自然科學基金(41701539, 41701540)，北京市自然科學基金(4184107)，國家留學基金(201704910279)

詳細信息

作者簡介:
胡堃：胡堃：男，1986年生，助理研究員，博士，研究方向為高分辨率光學衛(wèi)星數(shù)據(jù)的精準處理、綜合分析與質(zhì)量評價. 黃旭：男，1987年生，工程師，博士，研究方向為多視航空和近景影像的密集匹配與3維重建. 張永軍：男，1975年生，教授，博士生導師，研究方向為航天航空和低空攝影測量、影像匹配與3維城市重建. 尤紅建：男，1969年生，研究員，博士生導師，研究方向為SAR影像的幾何精校正、遙感影像的精配準與變換檢測.

中圖分類號: P236
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出版歷程
- 收稿日期: 2017-10-23
- 修回日期: 2018-04-12
- 刊出日期: 2018-07-19

Satellite Platform Jitter Detection and Image Geometric Quality Compensation Based on High-frequency Angular Displacement Data

HU Kun^①②③ HUANG Xu^③ ZHANG Yongjun^④ YOU Hongjian^①②

Funds:

The National Natural Science Foundation of China (41701539, 41701540), The Beijing Natural Science Foundation (4184107), The China Scholarship Council (201704910279)

摘要

摘要: 隨著對地觀測衛(wèi)星成像分辨率和在軌機動性能的提升，衛(wèi)星平臺姿態(tài)的高頻顫振對成像幾何質(zhì)量的影響更加顯著。鑒于傳統(tǒng)的基于分時成像數(shù)據(jù)的顫振檢測和補償方法具有密集匹配計算量大，誤差干擾程度高和無法分解各旋角方向的顫振量等缺點。該文以國產(chǎn)遙感系列光學衛(wèi)星搭載的高頻角位移設(shè)備為例，研究基于角位移高頻測姿數(shù)據(jù)的直接顫振檢測方法和影像幾何質(zhì)量補償方法。其中包括角位移數(shù)據(jù)的加窗FIR濾波預(yù)處理，在俯仰、翻滾和偏航方向隨時間變化的顫振曲線分布規(guī)律分析，以及基于角位移數(shù)據(jù)的影像直接定位補償。將高頻顫振補償應(yīng)用于衛(wèi)星平臺的姿態(tài)復(fù)原和基于嚴格成像幾何模型的幾何糾正解算。采用北京地區(qū)遙感系列光學衛(wèi)星數(shù)據(jù)的實驗結(jié)果表明，該文方法能夠顯著地改善高頻顫振檢測的精度和可靠性，有效地提高顫振補償后衛(wèi)星影像的內(nèi)部幾何質(zhì)量，其中長度變形精度提高了0.5個像素左右。
- 衛(wèi)星攝影測量 /
- 角位移數(shù)據(jù) /
- 高頻顫振檢測 /
- 直接定位補償 /
- 幾何質(zhì)量評價
Abstract: With the improvement of imaging resolution and on-orbit mobility of earth observation satellites, the imaging geometric quality is more apparently influenced by the attitude’s high-frequency jittering of satellite platform. The traditional time-division imaging data based jitter detection and compensation methods have many drawbacks, which include large amount of calculation and high degree of error interference in dense matching, and it is unable to decompose the jitter quantity in each rotation angle direction. This paper takes the high-frequency angular displacement equipment which is carried by China’s remote sensing optical satellite for example, studies on the direct jitter detection method and the image geometric quality compensation method based on high-frequency attitude measurement angular displacement data, which include the windowed FIR filter pre-processing of angular displacement data, the phase distribution analysis on time-dependent jitter curve in pitch, roll and yaw directions, as well as image direct positioning compensation based on angular displacement data. The high-frequency jitter compensation is applied to attitude recovery and geometric rectification based on strict imaging geometric model.The experimental results of China’ remote sensing satellite images in Beijing area illustrate that the methods proposed in this paper can significantly improve the accuracy and reliability of the high- frequency jitter detection, and can effectively improve the internal geometric quality of satellite image after jitter compensation. For example, the length deformation accuracy can be improved by 0.5 pixel.
- Satellite photogrammetry、Angular displacement data、High-frequency jitter detection、Direct positioning compensation、Geometric quality evaluation /

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