当代摄影测量ADS40数据处理

ADS40数据处理,遥感信息工程学院赵双明2009.10.29,ADS40数字传感器特点,三线阵推扫立体成像。同时获取前视、中视、后视100重叠、连续无缝的地面影像。12比特灰度等级、8比特辐射分辨率、2.5-25倍数据压缩率、大于1.2兆/秒的记录速度大容量的机载存储器MM40。一次升空飞行时间可以持续数小时。POS(GPS/IMU)精确导航定位。减少地面控制点布设。同时获取具有相同分辨率三个全色波段与四个多光谱波段数字影像。扫描宽度12000个像素，航带内正射影像无需拼接。多视匹配。,ADS40数字影像,5m,ADS40数字影像,ADS40数字影像,ADS40数字传感器系统,传感器头SH40：包括IMU、数字镜头控制单元CU40：GPS单元、POS计算单元大规模存储器MM40系统控制操作界面OI40导航指示GI40陀螺稳定平台PAV30,ADS40数字传感器系统,3panchromaticCCDlineseach2x12,000pixels,staggeredby3.25m4multispectralCCDlines,each12,000pixelsPixelsize:6.5mx6.5mFieldofview(FoV)orswathangle:64Focallength:62.77mmStereoangles:14,28,42,ADS40焦平面,BenefitsofasymmetryChoiceofvariousstereoangles14.2,28.4,42.6Nosingularityinmathematicalformulaeusedinadjustmentprocesses,Staggeredpanchromaticlines,NIRline,RGBlines,Backwardview,Forwardview,28.4,-14.2,Focalplate,ADS40焦平面,ADS40相机文件(*.cam文件),ADS_CALIBRATION_FILE1CALIBRATION_SOURCEORIMACAMERA_NAMESP1SENSOR_LINENadirACALIBRATION_DATETueSep1718:47:342002IMU_MISALIGNMENT0.00029760.00002680.00578740.0000380-0.00668370.0000178FOCAL_LENGTH_MM62.700NUM_PIXELS12000PIXEL_SIZE0.0065START_XY-0.0968-39.2051-0.0968-39.1984-0.0968-39.1917-0.0968-39.1850-0.0968-39.1782-0.0968-39.1715-0.0968-39.1648-0.0968-39.1581-0.0968-39.1514-0.0968-39.1447-0.0968-39.1380-0.0968-39.1312-0.0968-39.1245-0.0968-39.1178-0.0968-39.1111-0.073638.9069-0.073638.9137-0.073638.9204-0.073638.9272-0.073638.9339END_XY,GPS/IMU集成-POS,POS,ApplanixPOSSystemOEMversionintegratedintoSensorHeadSH40TightIMU/GPSintegrationHighshorttermIMUattitudeaccuracy,4afterlinearcorrection200HzIMUreadoutfrequency,ADS40+POS,GPS产生绝对位置（2Hz)IMU产生相对位置及高精度的pitch、roll、drift姿态角（200Hz）IMU轨道更新飞行轨道内插以800Hz的频率产生位置和定向数据（初始POS数据）,ADS40+POS,POS定位定向数据(*.odf文件),226217981.9798008370.255000-7.6260002711.800000-0.0052800.0209713.140819226217981.9815008370.160000-7.6250002711.800000-0.0052780.0209783.140815226217981.9832008370.064000-7.6250002711.799000-0.0052750.0209853.140811226217981.9849008369.969000-7.6240002711.799000-0.0052730.0209923.140808226217981.9866008369.873000-7.6240002711.799000-0.0052690.0209983.140806226217981.9883008369.778000-7.6230002711.798000-0.0052670.0210043.140804226217981.9900008369.682000-7.6230002711.798000-0.0052670.0210093.140801226217981.9917008369.587000-7.6220002711.797000-0.0052680.0210123.140797226217981.9934008369.491000-7.6220002711.797000-0.0052680.0210163.140793226217981.9951008369.396000-7.6220002711.797000-0.0052670.0210203.140789226217981.9968008369.300000-7.6210002711.797000-0.0052650.0210243.140786226217981.9985008369.205000-7.6210002711.796000-0.0052630.0210273.140782226217982.0002008369.111000-7.6200002711.794000-0.0052630.0210293.140779226217982.0019008369.017000-7.6180002711.792000-0.0052630.0210303.140777226217982.0036008368.923000-7.6170002711.790000-0.0052640.0210303.140774226217982.0053008368.828000-7.6170002711.790000-0.0052670.0210303.140773226217982.0070008368.732000-7.6160002711.789000-0.0052690.0210293.140771226217982.0087008368.636000-7.6160002711.789000-0.0052720.0210273.140771226217982.0104008368.541000-7.6160002711.789000-0.0052740.0210233.140772226217982.0121008368.445000-7.6150002711.789000-0.0052760.0210183.140775226217982.0138008368.350000-7.6150002711.788000-0.0052770.0210143.140778226217982.0155008368.255000-7.6140002711.788000-0.0052780.0210113.140782226217982.0172008368.159000-7.6140002711.787000-0.0052800.0210083.140787226217982.0189008368.064000-7.6130002711.787000-0.0052820.0210053.140792226217982.0206008367.968000-7.6130002711.787000-0.0052870.0210013.140797,support数据(*.sup文件),support_filedIMAGE_ID1045NA-AIMAGE_FILE_NAME1D:Waldkirchimages_L01045NA-A.adsLINES99520SAMPLES12000IMAGE_FILE_NAME16D:Waldkirchimages_L01045NA-A.ads_16LINES6220SAMPLES750RECTIFICATION_TERMS0.00000000000000e+0000.00000000000000e+0001.00000000000000e+0000.00000000000000e+0001.00000000000000e+0000.00000000000000e+000GRND_BIAS0.00000000000000e+0000.00000000000000e+0000.00000000000000e+000BIAS0.000000GAIN1.000000GROUND_ZERO-1.53851194122998e+0034.82554796077255e+0026.49795888154818e+002LOAD_PT-1.53851194122998e+0034.82554796077255e+0026.49795888154818e+002COORD_SYSTEM0UNITS1USE_FAST_MATH0MAX_AND_MIN_ELEVATION0.01000.0IMAGE_MOTION0INITIALIZED2STATUS0PHOTO_DATEThuOct2420:47:292002QUALITY48SENSOR_TYPEADSIMAGE_LEVEL0MEAN_TERRAIN_HEIGHT650.00000LINE_STAGGEREDFALSEVIEW_OF_LINENADIRRADIOMETRIC_PROPERTYPANCHROMATICIMAGE_DATETueOct2919:37:292002ANCHOR_LATITUDE0.82849558ANCHOR_LONGITUDE0.16233307NUMBER_SCAN_LINES99520SENSOR_ROTATIONFALSECORRECTIONNO_CORRECTIONLEVEL_0_GSD0.21317434ORIGINAL_ORIENTATIOND:Waldkirchprojectsodf1045NA-A.odfADJUSTED_ORIENTATIOND:Waldkirchprojectsodf1045NA-A.odf.adjCALIBRATIOND:WaldkirchprojectscamADS40_0v001NA-A.camLOCAL_ORIGIN4.26259690800890e+0066.98103404765004e+0054.67719112383601e+006BASIS-1.61621044960247e-0019.86852895737737e-0014.13907858360857e-017-7.27226937416564e-001-1.19101010957302e-0016.75985155668875e-0016.67097908347555e-0011.09253427236819e-0017.36915238894764e-001,传感器定位模式,1、直接传感器定位(DG)2、集成传感器定向(ISO),单线阵成像原理,地面采样距离(Groundsampledistance)-GSD,AirbornedigitalsensorADS40,AnalogaerialcameraRC30,Swath2.4km,PixelonCCD6.5x6.5m,Pixelonground20 x20cm,Groundsampledistance,GSD20cm,Imagesize228mmx228mm,Example,Example,Footprint2.4kmx2.4km,Focallength153mm,Photoscale1:10,500,FieldofviewacrosstrackFoV64,Fieldofviewdiagonal90,框幅式成像原理、面中心投影效果,60%的重叠度,面中心投影,三线阵成像原理,ADS40推扫原理、线中心投影效果,ADS40立体成像原理,不同时刻三线阵获取的同名影像,同一时刻三线阵获取的地面影像,前视条带,中视条带,后视条带,ADS40摄影测量处理,ADS40传感器数学模型,影像到地面坐标变换共线条件方程地面到影像的坐标变换反投影,决定最接近地面点的成像时刻像点所在的扫描线,ADS40传感器数学模型,ADS40原始影像几何纠正,影响几何变形因素飞行姿态变化、飞行速度变化几何变形纠正。根据原始影像数据、外方位定向数据、相机内定向数据及相关元数据纠正生成Level1级影像数据。纠正数学模型经典的共线条件方程分块纠正,ADS40原始影像几何纠正,原始影像,纠正影像,Level0级几何纠正原理,Level0级几何纠正方法,ADS40几何纠正,ADS40几何纠正,ADS40几何纠正,Level1像点量测原理,ADS40Level1影像匹配,Level1影像前视、中视后视匹配,ADS40Level1影像匹配,张力博士论文,ADS40影像区域网平差,GPS相位中心与传感器投影中心位置偏移IMU坐标轴与相机坐标轴旋转偏差IMU随时间漂移,1、要获取更高精度、更高可靠性的定向数据，必须进行空中三角测量2、关键是对GPS/IMU的系统误差进行补偿,ADS40影像空中三角测量,分段多项式模型根据地面控制点、模型连接点的数量及分布情况，可将飞行轨道分割为若干段，每段分别用多项式进行拟合改正。平差的目的是解算改正多项式系数。,ADS40影像连接点,三视中的同名像点,分段i,分段i1,分段i+1,位于不同分段内的同名像点,ADS40影像空中三角测量,考虑轨道连续性，分段边界轨道曲线应光滑。相邻分段多项式值应满足相等的约束条件。,误差方