North Carolina Validation Range
The NC Digital Camera & Digital Orthophoto Validation Range is located in Surry County, NC. Its size is 20,000 foot by 20,000 foot consisting of sixteen (16) 5,000 foot by 5,000 foot orthophoto tiles. The range has 4 targeted ground control points at its corners to use in a combined airborne GPS or airborne GPS-IMU aerotriangulation block adjustment. See NC Digital Camera & Digital Orthophoto Validation Range map on the next page
The range also has two (2) types of ground surveyed checkpoints. There are targeted checkpoints for inclusion in the combined airborne GPS or airborne GPS-IMU aerotriangulation block adjustment. Results of this adjustment will be used to validate the accuracy of the proposed digital camera and GPS (or GPS-IMU) system. The second type of ground surveyed checkpoints in the range are photo identifiable points that will be used to validate the accuracy of the Vendor’s orthorectification process. There are sufficient targeted and photo identifiable checkpoints for statistical analysis of the results.
Vendors awarded a Study Area subset shall use each of their proposed digital camera and GPS (or GPS-IMU) systems to acquire 0.5 foot ground sample distance (GSD) color imagery of the range and produce the sixteen (16) orthophoto tiles using processes and procedures it intends to use for the entire Study Area subset. The Vendor will be required to deliver exploitation images for the validation range. The vendor will also be required to deliver all applicable data, documents, and reports as set forth in the State Standard. This will serve to not only permit CGIA to validate and accept the Vendor’s proposed digital camera and GPS (or GPS-IMU) systems, but also to review Vendor submittals early in the project cycle.
It is the intent that all digital camera and GPS (or GPS-IMU) systems be used to produce a final product to determine that the Vendor follows best practices, utilizes sufficient process quality management techniques and implements comprehensive process change control to ensure that a clear understanding of project deliverables and that the final product meets project specifications.