Deciding Which Survey Gaps Require Reacquisition
Reacquisition decisions should connect each known data gap to required deliverables, available evidence and a documented acceptance or collection scope.
GAUTEN UAV / TOPIC ARCHIVE
Category: Surveying & Mapping
Checking Registration Between Multispectral Bands
Cross-band registration review uses original band images, stable edges and processing records to test whether multispectral pixels describe the same location.
Image: U.S. Geological Survey, National Uncrewed Systems Office (individual photographer not credited on asset page) / public-domain. Resized for this page.
Vertical Faces and the Blind Spots of Nadir Mapping
A nadir area map can cover a footprint without observing the vertical faces a civil inspection requires; visibility must be checked feature by feature.
Oblique Imagery on Fixed-Wing Platforms
Adding an oblique camera changes the observation and integration problem; view direction, overlap, installed references and acceptance evidence need separate review.
Vegetation Surfaces Are Not Automatically Ground Elevation
A bare-earth claim needs evidence of ground observations and classification beneath vegetation, not merely a smooth canopy model or a sensor label.
Image: U.S. Geological Survey, National Uncrewed Systems Office (individual creator not credited on asset page) / public-domain. Resized for this page.
Photogrammetry Over Water: A Fixed-Wing Planning Boundary
Image coverage over water does not establish a measured water surface or depth; suitability depends on observable features and independent validation.
Image: U.S. Geological Survey, National Uncrewed Systems Office (individual photographer not credited on asset page) / public-domain. Resized for this page.
Reviewing GNSS Solution Quality for Survey Trajectories
A trajectory-quality review links solution indicators and interruptions to acquisition events, reference-station provenance and independent product checks.
Image: U.S. Geological Survey, National Uncrewed Systems Office (individual photographer not credited on asset page) / public-domain. Resized for this page.
Detecting Capture Throughput Problems Before Processing
Reconciling intended triggers, recorded capture groups and file timestamps separates acquisition gaps from later processing failures.
Survey Tender Questions That Expose Unsupported Claims
A survey tender becomes testable when deliverables, reference definitions, payload configuration and independent acceptance evidence replace brochure-level promises.
Image: Dann Blackwood / U.S. Geological Survey / public-domain. Resized and cropped.
Storage and Transfer Planning for Survey Payloads
Survey storage planning needs an end-to-end budget for sustained capture, working copies, retained raw files and verified transfer—not capacity alone.