Digital Aerial Photography, Photogrammetric Mapping and Ortho-Imagery Services

The Vendor is required to provide digital large-format aerial photography at 30 mm ground sample distance (GSD), airborne global navigation satellite system (GNSS) and inertial measurement system (IMS) data, photogrammetric mapping, digital terrain models (DTMS), and Ortho-imagery to support the city and three of its landfill sites as per the contract documents.
- Core service activates
•    Aerial photo acquisition and planning, QA/QC and acquired photo approval with aerial triangulation
•    Provide activities all reports and related updates to the project specified in the SOR
- Support activities
•    Communications and updates
•    Documentation and record-keeping
•    Coordination with city staff or stakeholders 
•    General administrative tasks required for effective service delivery
- Optional and on-demand services
•    CGS may require the modification of the desired footprint of a landfill to be captured, mapped, and the sequence of which landfill needs to be mapped in priority due the ongoing projects of the current year.
- Provide all equipment, personnel, approvals, processing, QA/QC, reporting, and deliverables required for:
•    Aerial photography acquisition by fixed winged aircraft
•    Airborne GNSS and IMS data collection
•    Aerial triangulation and adjustment
•    Digital photogrammetric mapping and DTM generation
•    Ortho-imagery production (mosaicked, radio metrically balanced)
•    Metadata and final reporting
- Aerial photography
•    Large-format digital frame-based sensor
•    Minimum frame: 14,430 × 9,420 pixels; sensor resolution 7.2 µM; 100 mm focal length
•    Concurrent capture of panchromatic and RGB imagery
•    Forward motion compensation errors ≤ 15 µm
•    Tilt and crab ≤ 5°, average tilt per line < 2°
•    No up-sampling to meet GSD is permitted.