Control Network for Ganymede Images from JunoCam Perijove 34

Delivered is a photogrammetric control network for four images of Ganymede collected by the Juno- Cam instrument during the Juno mission’s perijove 34 encounter on 2021-06-07. The network has 184,659 control points and 369,318 control measures (2 measures per control point). The network is a PVL formatted text file for use in ISIS (Integrated Software for Imagers and Spectrometers). When control points are merged with an image distance tolerance of 1.0 pixel the resulting network has 83,096 control points and 233,598 control measures. Extracting control points with 4 or more measures yields a network with 16,709 control points and 75,197 control measures. The initial network is produced with novel code implemented in Mathematica. In the “Initial Network” 98% of residuals are less than 1.72 pixels. Median residual is .40 pixels. There are 54 control points with residuals greater than 3 pixels, and 1544 with greater than 2. See ControlNetworkJunoCamV16j.pdf for details.本次交付的是2021年6月7日朱诺（Juno）任务第34次近木点（perijove 34）飞掠期间，由朱诺相机（Juno-Cam）设备获取的4幅木卫三（Ganymede）影像的摄影测量控制网（photogrammetric control network）。该控制网共包含184659个控制点（control point）与369318个控制测量值（control measure），平均每个控制点对应2个测量值。本控制网为PVL格式文本文件，可用于ISIS（成像与光谱仪集成软件，Integrated Software for Imagers and Spectrometers）。当以1.0像素的影像距离容限合并控制点后，所得控制网的控制点数量为83096个，控制测量值为233598个。提取出拥有4个及以上测量值的控制点后，所得控制网包含16709个控制点与75197个控制测量值。初始控制网通过基于Mathematica开发的原创代码生成。在"初始控制网"中，98%的残差（residual）小于1.72像素，残差中位数为0.40像素。共有54个控制点的残差大于3像素，1544个控制点的残差大于2像素。详细信息请参阅ControlNetworkJunoCamV16j.pdf文件。