Discuss WAC accuracy and precision

[jlaura]

MoonTrek has some FGDC style metadata on WAC accuracy. It is not clear where this metadata is coming from. Does an analysis of the accuracy exist that can be added to the Lunar standards?

Data_Quality_Information:
Logical_Consistency_Report:
The LROC WAC consists of a 1k x 1k CCD frame which is split up into sub-frames for seven different spectral bands. Subframes consists of 14 lines with 704 pxl/line, while subframes form an image strip. Single WAC images within an orbit cover 10 degrees of latitude. From nominal 50 km orbit altitude LROC WAC image have a 75 m/pxl ground scale.
Completeness_Report: This is a preliminary product.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The absolute horizontal accuracy is dependent on the absolute horizontal accuracy of the LOLA data. The absolute horizontal accuracy of the LOLA data was as much as 300 meters, however, is expected that the absolute horizontal accuracy of the LOLA data will be close to 12 to 50 meters once the crossover analysis is applied.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 300
Horizontal_Positional_Accuracy_Explanation: 12-300m absolute accuracy, 1-5m relative accuracy
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The absolute vertical accuracy of the LOLA data is expected to approach 1 meter, but at the time this DEM was created, the vertical accuracy of the LOLA data was approximately 10 meters. The relative precision of the DEM is expected to be 1 meter, but can be as large as 2 meters.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 10
Vertical_Positional_Accuracy_Explanation:
1-10m absolute accuracy, 1-5m precision. Absolute accuracy is based on LOLA error estimates. Precision is based on SOCET SET precision and RMS error between LOLA profiles and DEM.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: 10
Vertical_Positional_Accuracy_Explanation: [<http://directory.eoportal.org/presentations/129/13466.html>](http://directory.eoportal.org/presentations/129/13466.html)