GUO Jiang GONG Da-Peng ZHU Lei SUN Ji-ming SHAO Ming-dong. Calculation of overlapping pixels in interleaving assembly of CCD focal plane of mapping camera[J]. Editorial Office of Optics and Precision Engineering, 2013,21(5): 1251-1257
GUO Jiang GONG Da-Peng ZHU Lei SUN Ji-ming SHAO Ming-dong. Calculation of overlapping pixels in interleaving assembly of CCD focal plane of mapping camera[J]. Editorial Office of Optics and Precision Engineering, 2013,21(5): 1251-1257 DOI: 10.3788/OPE.20132105.1251.
Calculation of overlapping pixels in interleaving assembly of CCD focal plane of mapping camera
Imaging gaps will appear in the field of view for a mapping camera due to the convergence angle when it uses a interleaving assembly of focal plane. In order to solve the problem above
an algorithm of minimum overlapping pixels was proposed by considering convergence angle and without camera pitch. Firstly
an imaging model for the front view camera was established according to the imaging principle of mapping camera. The reason that imaging gaps appear was analyzed. Then
the mathematical expressions of imaging gaps and overlaps of odd and even quantity CCD assemblies were derived
the formula for computing the minimum number overlapping pixels between adjacent CCDs that can avoid the imaging gaps was obtained
and the error was analyzed. Finally
the algorithm was applied to an engineering example
and the effect of earth curvature was analyzed. The instance shows that the imaging gaps and the minimum number of overlapping pixels in the engineering instance are 1 141.491 m and 115 in maximum respectively. It indicates that the proposed algorithm can calculate the minimum number of overlapping pixels of the mapping camera and the theoretical error is less than 1 pixel.
关键词
Keywords
references
杨秉新.国外航天侦察相机和测绘相机发展概况 \[J\]. 航天返回与遥感,1998,19(2):16-24.YANG B X.The development survey of foreign space reconnaissance camera and mapping camera \[J\]. Spacecraft Recovery & Remote Sensing, 1998,19(2):16-24. (in Chinese)[2]CHENG H Y.A high-resolution airborne four-camera imaging system for agricultural remote sensing \[J\]. Computers and Electronics in Agriculture,2012,88:13-24.[3]ANTONI R. Progress in focal plane array technologies \[J\]. Progress in Quantum Electronics,2012,36(2-3):342-473.[4]CAZAUX Y,SUBIELA D,BOUCHARLAT G.12000 pixel monolithic linear sensor for high resolution pushbroom earth observation satellites \[C\]. Advanced and Next-Generation Satellites Hiroyuki Fujisada,Paris,France,1995,2583:430 -439.[5]李朝辉,王肇勋,武克用.空间相机CCD焦平面的光学拼接 \[J\]. 光学 精密工程, 2000,8(3):213-216.LI ZH H,WANG ZH X,WU K Y.Optical assembly of CCD focal plane for space camera \[J\]. Opt. Precision Eng.,2000,8(3):213-216.(in Chinese)[6]杨桦,郭悦,伏瑞敏.TDICCD的视场拼接 \[J\]. 光学技术,2003,29(2):226-228.YANG H,GUO Y,FU R M.Study on dield butting of TDICCD \[J\]. Optical Technique,2003,29(2):226-228.(in Chinese)[7]张星祥,任建岳.TDICCD焦平面的机械交错拼接 \[J\]. 光学学报,2006,26(5):740-745.ZHANG X X,REN J Y.Mechanical interleaving assembly of TDICCD focal plane \[J\]. Acta Optical Sinica,2006,26(5):740-745.(in Chinese)[8]杨居奎.偏流对三线阵TDICCD测绘相机的影响分析 \[J\]. 航天返回与遥感,2006,27(4):27-32.YANG J K.The effect of the drift on three-line TDICCD mapping camera \[J\]. Spacecraft Recovery & Remote Sensing,2006,27(4):27-32. (in Chinese)[9]袁孝康.星载TDI-CCD推扫相机的偏流角计算与补偿 \[J\]. 上海航天,2006,(6):10-13.YUAN X K.Calculation and compensation for the deviant angle of satellite borne TDI-CCD push scan camera \[J\]. Areospace Shanghai,2006,(6):10-13.(in Chinese)[10]李伟雄,徐抒岩,闫得杰.影响空间相机偏流角估值误差的参数 \[J\]. 红外与激光工程,2011,40(8):1530-1536.LI W X,XU SH Y,YAN D J.Influencing parameters of estimate errors of space cameras drift angle \[J\]. Infrared and Laser Engineering,2011,40(8):1530-1536.(in Chinese)[11]王智,张立平,姚惠.三线阵立体测绘相机光学镜头的设计 \[J\]. 光子学报,2010,39(2):227-232.WANG ZH,ZHANG L P,YAO H.Design on optical lens of three-linear tridimensional mapping camera \[J\]. Acta Phontonica Sinica, 2010,39(2):227-232. (in Chinese)[12]田铁印,王红,谷凤安,等.三线阵立体测绘相机光学系统设计 \[J\]. 光学 精密工程,2009,17(11):2692-2698.TIAN T Y,WANG H,GU F A, et al.. Optical system design of three-line array stereoscopic mapping camera \[J\]. Opt. Precision Eng., 2009,17(11):2692-2698. (in Chinese)[13]闫得杰,韩诚山,李伟雄.飞行器侧摆和前后摆及控制误差的优化设计 \[J\]. 光学 精密工程,2009,17(9):2224-2229.YAN D J,HAN CH S,LI W X.Optimization design of scroll and pitch and their control errors on aerocraft \[J\]. Opt. Precision Eng.,2009,17(9):2224-2229.(in Chinese)[14]WANG X Y.Research on technologies of stability and calibration precision of mapping camera \[J\]. Physics Procedia,2011,22:512-516.[15]吕恒毅,刘扬,郭永飞.遥感相机焦面CCD机械拼接中重叠像元数的确定 \[J\]. 光学 精密工程,2012,20(5):1041-1047.LV H Y,LIU Y,GUO Y F.Computation of overlapping pixels of mechanical assembly CCD focal planes in remote sensing cameras \[J\]. Opt. Precision Eng.,2012,20(5):1041-1047.(in Chinese)