Specifications include, but are not limited to: Deliverables • Orthophotograph of the Greater Missoula Area (Figure 1) • Survey Control Report • Aerotriangulation Report • Compilation Report Scheduling • Photography of the project area must be gathered in the Spring of 2023, with the delivery schedule of required products to be proposed by the respondent. Said schedule should minimize total project costs. • Aerial Photography shall be flown on the first day of acceptable weather and sun angle, but prior to the significant growth of leaves on deciduous trees. • Control surveys may be completed after the aerial photography is completed if necessary to ensure that leaf-off photography is obtained in the spring of 2020. • Orthophotography products shall be submitted on a predetermined schedule as individual tiles are completed. The City does not want one large submission. Technical Specifications • Resolution - 3 Inch Pixel Resolution • Color - Color / RGB 3--‐Band • Projection - NAD 1983 StatePlane Montana FIPS 2500 • Survey Units - US Survey Feet • Elevation Model - Original DEM Development • Collection Method - Direct digital capture o R, G, B, simultaneous capture o 16--‐bit per channel (64 bit) o True Color RGB • Accuracy Standard - ASPRS Class I (1”=50’) • Positional Support - ABGPS and IMU will be collected during the flight • Collection Window - Leaf--‐off o Sun angle at least 30 degrees / Minimal ShadowConditions • Flying Conditions - Leaf--‐off o No haze, dust, light streaks, smoke, snow orfloodwaters • Raw Imagery Quality - Clear and sharp in detail, true color o No corrupt imagery or artifacts o Consistent tone, color, and density across ortho image tiles o Consistent radiometry and geometry across ortho image tiles • Orthophotography - Digital imagery will be delivered as a reproducible single mosaic and as an individual (edge--‐matched) "tiled" imagery file with loc. Index • Formatting - Tiles will be delivered in the following formats o Uncompressed TIFF/with TFW Tiles o Enhanced Compressed Wavelet (.ecw) Tiles o Enhanced Compressed Wavelet (.ecw) Mosaic • Metadata - All metadata will conform to the FGDC Metadata Standards • Aerial Photography will be gathered by onboard-piloted aircraft. No aerial photography taken from a remotely-flown drone aircraft will be considered. • Flight Data - A digital flight line index will be included with the image files indicating photo centers and flight line directions. Flight date and time (GPS pts) will be provided within 24hrs of flight.
