Volume 6 Issue 5
Oct.  2013
Turn off MathJax
Article Contents
LI Guang-ze, KONG De-zhu, LIU Jin-guo. Computation of scroll image motion velocity of wide coverage optical remote camera[J]. Chinese Optics, 2013, 6(5): 750-758. doi: 10.3788/CO.20130605.0750
Citation: LI Guang-ze, KONG De-zhu, LIU Jin-guo. Computation of scroll image motion velocity of wide coverage optical remote camera[J]. Chinese Optics, 2013, 6(5): 750-758. doi: 10.3788/CO.20130605.0750

Computation of scroll image motion velocity of wide coverage optical remote camera

  • Received Date: 15 Jul 2013
  • Rev Recd Date: 13 Sep 2013
  • Publish Date: 10 Oct 2013
  • According to the feature of a wide coverage space camera, the geometrical relation of scroll imaging was analyzed.The space coordinate transform process from an object point on the earth to the image point in the focal plane was found. Furthermore, the calculation formulas of scroll image motion velocity were deduced based on a round earth model by using the transform of space coordinate system. The effect of relative image motion match error on the image quality was analyzed by the image motion mismatch modulation transfer function(MTFmismatch). By taking a wide coverage space camera for an example, image motion velocities at different scroll angles and different centrifugal angles were researched. Computation results indicate that the image motion velocities and their variation trends with the scroll angle are different in the different positions of image plane. The MTFmismatch caused by mismatch image motion velocity reaches 0.681 at the perigee if the scroll angle is 25 and the TDI stage is 48. The actual field experimental results show that it is necessary to keep the TDI stages within 16 to ensure good image quality.

     

  • loading
  • [1] 姜景山,王文奎,都亨.空间科学与应用[M]. 北京:科学出版社,2001:113-114. JIANG J SH,WANG W K.DU H. Space Science and Application[M]. Beijing:Science Press, 2001:113-114.(in Chinese) [2] 马天波,郭永飞,李云飞. 科学级TDICCD相机的行频精度[J]. 光学 精密工程,2010,18(9):2028-2035. MA T B,GUO Y F,LI Y F. Precision of row frequency of scientific grade TDICCD camera[J]. Opt. Precision Eng.,2010,18(9):2028-2035.(in Chinese) [3] 武星星,刘金国. 应用地球椭球的三线阵立体测绘相机像移补偿[J]. 光学 精密工程,2011,19(8):1794-1800. WU X X,LIU J G. Image motion compensation of three-line stereo mapping camera using earth ellipsoid[J]. Opt. Precision Eng.,2011,19(8):1794-1800.(in Chinese) [4] 巩盾,田铁印,王红. 温度环境下空间遥感光学系统成像质量的检测[J]. 中国光学,2012,5(6):602-609. GONG D,TIAN T Y,WANG H. Image quality testing of space remote sensing optical system under thermal environment[J]. Chinese Optics,2012,5(6):602-609.(in Chinese) [5] 田铁印,王红,冯晟杰. 三线阵测绘相机光学系统的杂光分析与计算[J]. 中国光学,2012,5(6):583-589. TIAN T Y,WANG H,FENG SH J. Analysis and calculation on stray light of three line array mapping camera[J]. Chinese Optics,2012,5(6):583-589.(in Chinese) [6] 田铁印,王红,吴国栋. 杂光对三线阵相机光学系统成像的影响[J]. 液晶与显示,2012,27(6):847-851. TIAN T Y,WANG H,WU G D. Impact of stray light on image of three line array camera[J]. Chinese J. Liquid Crystals and Displays,2012,27(6):847-851.(in Chinese) [7] 黄群东,杨芳,赵健. 姿态对地指向不断变化成像时的像移速度计算[J]. 光学 精密工程,2012,20(12):2812-2819. HUANG Q D,YANG F,ZHAO J. Calculation of image motion velocity for agile satellite dynamic imaging to changed continuously attitude point[J]. Opt.Precision Eng.,2012,20(12):2812-2819.(in Chinese) [8] 王家骐,于平,颜昌翔,等. 航天光学遥感器像移速度矢计算数学模型[J]. 光学学报,2004,24(12):1585-1589. WANG J Q,YU P,YAN CH X,et al.. Space optical remote sensor image motion velocity vector computational modeling[J]. Acta Optica Sinica,2004,24(12):1585-1589.(in Chinese) [9] 王运,颜昌翔. 基于差分法的空间相机像移速度矢量计算[J]. 光学 精密工程,2011,19(5):1955-1960. WANG Y,YAN CH X. Computation of image motion velocity vector for space camera based on difference method[J]. Opt. Precision Eng.,2011,19(5):1955-1960.(in Chinese) [10] 孔德柱,刘金国,吕世良,等. 空间相机像移速度计算方法及DSP实现[J]. 光学 精密工程,2009,17(8):1935-1941. KONG D ZH,LIU J G,LÜ SH L,et al.. Calculation method for image motion speed of space camera and DSP-based implementation[J]. Opt. Precision Eng.,2009,17(8):1935-1941.(in Chinese) [11] 郭永飞. 侧摆成像下多片TDICCD拼接相机分段异速研究[J]. 光机电信息,2010,27(10):32-38. GUO Y F. Research on subsection image motion mismatching for multi-TDICCD mosaic camera of scroll imaging[J]. OME Information,2010,27(10):32-38.(in Chinese) [12] 薛旭成,石俊霞,吕恒毅,等. 空间遥感相机TDICCD积分级数和增益的优化设置[J]. 光学 精密工程,2011,19(4):857-853. XUE X CH,SHI J X,LÜ H Y,et al.. Optimal set of TDI CCD inergration stages and gains of space remote sensing cameras[J]. Opt. Precision Eng.,2011,19(4):857-853.(in Chinese) [13] 李晓云,杜伟. 星载TDICCD相机像移对成像质量的影响分析[J]. 航天器工程,2011,20(3):51-56. LI X Y,DU W. Analysis of Image motion effext on satellite tdiccd camera image quality[J]. Spacecraft Eng.,2011,20(3):857-853.(in Chinese)
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Article views(2453) PDF downloads(609) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return