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多CCD視野つなぎ合わせ広域カメラの軌道上幾何学的較正と精度検証

  • role： First author第一作者
  • Affiliation：

    Beijing Institute of Tracking and Telecommunication Technology, Beijing 100101, China

  • Email：wwss_000@163.com
  • Introduction：孟伟灿，研究方向为卫星应用。E-mail： wwss_000@163.com
MENG Weican1,  
  • role： Corresponding author通信作者
  • Affiliation：

    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

  • Email：2014302590078@whu.edu.cn
  • Introduction：王太平，研究方向为在轨几何定标及无地面控制区域网平差。E-mail： 2014302590078@whu.edu.cn
WANG Taiping2*,  
  • Affiliation：

    China Siwei Surveying and Mapping Technology Co. Ltd., Beijing 100408, China

WAGN Yuhao3,  
  • Affiliation：

    State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China

GENG Zemin2

サマリー

四維高景三号01星（SVN301）の広域カメラは、32枚のTDI CCD（Time-Delay Integration Charge-Coupled Device）デバイス視野のつなぎ合わせ技術を採用し、超広幅とサブメートル級解像度の効果的な融合を実現し、マクロなカバレッジ能力と精密な検出能力を兼ね備え、国土資源調査や緊急災害対応などの応用で顕著な利点を有しています。軌道上幾何学的較正は、光学リモートセンシング衛星の幾何精度保証の核心的な段階であり、画像の絶対位置精度およびCCD間の幾何学的一致性を向上させる上で重要な役割を果たします。SVN301衛星の広域カメラ多CCD視野のつなぎ合わせおよびサブメートル級撮像の特性に対応して、本稿では多CCD視野のつなぎ合わせ広域カメラを対象とした軌道上幾何学的較正手法を設計し、特徴マッチングとテンプレートマッチングを組み合わせた戦略で狭い重複領域内の接続点マッチングを実現し、地上制御点と接続点を共同で利用して同一波長の各CCDの内部較正パラメータを推定しました。軌道上幾何学的較正試験により、較正後のSVN301広域画像の絶対位置精度は3ピクセル以内、隣接CCD画像間のつなぎ合わせ精度は0.3ピクセル以内に制御され、設計した軌道上幾何学的較正手法が多CCD視野つなぎ合わせ広域画像の幾何品質向上に有効であることが検証されました。

キーワード

SVN301衛星;サブメートル解像度広視野カメラ;多CCD視野つなぎ合わせ;軌道上幾何学的較正;相対拘束;絶対位置精度;つなぎ合わせ精度

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