本文選題：高分二號衛(wèi)星　切入點：北斗衛(wèi)星導(dǎo)航系統(tǒng)　出處：《國土資源遙感》2017年03期 　論文類型：期刊論文

【摘要】：高分二號(GF-2)衛(wèi)星幾何精糾正是其廣泛應(yīng)用的前提。以福州市作為實驗區(qū),選擇北斗衛(wèi)星導(dǎo)航系統(tǒng)(北斗)和GPS野外測量獲取控制點和檢查點,采用像方平移、像方漂移和像方仿射變換3種方法對有理函數(shù)模型進行誤差補償,驗證分析控制點測量精度、分布、數(shù)目以及糾正方法對GF-2全色影像糾正的影響,并分析了北斗應(yīng)用于GF-2全色影像正射糾正的潛力。實驗結(jié)果表明:少量分布均勻的控制點就可以消除GF-2全色影像糾正后的系統(tǒng)幾何誤差;3種糾正方法中像方仿射變換方法精度最高,其中GPS控制測量下檢查點平面均方根誤差為1.49 m,北斗RTK控制測量下檢查點平面均方根誤差為1.51 m,GPS與北斗RTK控制測量下的影像糾正精度接近;北斗2種測量模式中,只有RTK模式能夠滿足GF-2全色影像糾正需求。上述研究表明,GF-2全色影像能夠利用GPS和北斗RTK模式控制測量下的少量分布均勻高精度控制點達到較高糾正精度,滿足實際應(yīng)用需求。
[Abstract]:The geometric correction of GF-2) satellite is the precondition of its wide application. Taking Fuzhou City as the experimental area, the Beidou Satellite Navigation system (Beidou) and GPS field measurements are selected to obtain control points and check points, and the image square translation is adopted. Three methods of image drift and affine transform are used to compensate the error of rational function model, and the effect of measuring accuracy, distribution, number and correction method of control points on GF-2 panchromatic image correction is verified. The potential of Beidou application in orthographic correction of GF-2 panchromatic image is analyzed. The experimental results show that a small number of uniformly distributed control points can eliminate the system geometric error of GF-2 panchromatic image correction. The transformation method has the highest accuracy. The root mean square error (RMS) of checkpointing plane under GPS control is 1.49m, and that under Beidou RTK control is 1.51mGPS and Beidou RTK control is similar to that of Beidou RTK. Only the RTK mode can meet the needs of GF-2 panchromatic image correction. The above research shows that the GF-2 panchromatic image can achieve high correction accuracy by using a small number of uniform and high precision control points under the control of GPS and Beidou RTK mode, and meet the practical application requirements.
【作者單位】： 中國科學(xué)院遙感與數(shù)字地球研究所;中國科學(xué)院大學(xué);中國地質(zhì)大學(xué)(武漢)李四光學(xué)院;
【基金】：國家重點研發(fā)計劃全球變化及應(yīng)對專項項目“大尺度全球變化數(shù)據(jù)產(chǎn)品快速生成方法”(編號:2016YFA0600302) 海南省重大科技計劃項目“海南省遙感大數(shù)據(jù)服務(wù)平臺建設(shè)與應(yīng)用示范”(編號:ZDKJ2016021);海南省重大科技計劃項目“新型海洋信息感知關(guān)鍵技術(shù)及設(shè)備研發(fā)”(編號:ZDKJ2016015-1)共同資助
【分類號】：P228.4;P237;TP751

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