Photo Science provided the planning, pre-targeting, GPS ground control, panchromatic aerial photography, airborne GPS control, analytical aerotriangulation, and DTM corridor mapping at 1”=100’ with two-foot contours for firebreak road designs--28 miles in seven different areas around the north impact area in Fort Campbell, Kentucky. Airborne GPS control was critical to the success of the project in order to minimize the impact and disruption to ongoing training in the range area.

The photography was captured at a photo scale of 1”=500’ using panchromatic film. A new ground network was established and used for ground observation and targeting during the acquisition of photography. Twenty new control points were established with eight targeted prior to the photography. The position of each of these control points was established using dual frequency GPS units running static and fast-static sessions. The control network was tied to two Tennessee HARN points and two Fort Campbell vertical control stations. The determination of individual photo centers were made using on-the-fly kinematic processing of the 0.5 second data captured on the dual frequency GPS units and the event markers collected from the mid-point of each exposure.

Photo Science is providing all services in-house required for this project including black-and-white aerial photography (1"=1,500'), scanning, GPS photo control, analytics, digital orthographic production and related services. The project scope includes more than 3,377 photos and 1,757 GPS control points for the 3,289 miles of pipeline corridor. In addition to those services, Photo Science is updating the base map from orthophotos and identifying structures required by Federal Energy Regulatory Commission (FERC) guidelines. These are updated directly on the Duke Intergraph FRAMME software system. Additionally, Photo Science is providing gas pipeline facility management services (updating work orders, etc.) within the Duke FRAMME system as well as addressing of residences within the pipeline corridor and mass mailings.

Photo Science provided aerial photography for baseline mapping for sea grass communities in Florida Bay for the Florida Fish and Wildlife Conservation Commission / Florida Marine Research Institute. Aerial photography was flown at 1:24,000-scale, true color. Photography was collected during the spring and fall of 2003 with sun angles between 25 to 40 degrees encompassing flights in the morning and afternoon. The effort covering the upper Florida Keys required approximately 22 flight lines representing 372 photos. Final deliverables included original negative film and color diapositives.

All data was collected with an airborne GPS/IMU solution. This provided controlled imagery and the ability to set up stereo models of the imagery without additional ground control or analytical processing. The imagery can be mapped as delivered in softcopy or with other photogrammetric equipment. This normally required not only utilization of specialized equipment in the aircraft, but also two ground control stations monitored during the flights. However, as a cost saving measure we were able to utilize existing Continuously Operating GPS Reference Stations (CORS) in the area to provide sufficient control for use with the IMU data.