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Tag «Ground Control Points»

Port and Maritime Infrastructure Mapping: Managing Tidal Datums and Coastal Geodetic Control

Coastal Mapping Ground Control for Maritime Infrastructure

Ground control points anchor coastal mapping to verified, survey-grade accuracy by connecting shoreline, infrastructure, and bathymetric data to a consistent real-world reference frame. For projects affected by changing water levels, that reference must also relate appropriately to the local tidal datum used for navigation, hydrography, engineering, and coastal management. CompassData collects Ground Control Points, or …

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Airport Mapping & AMDB: Meeting FAA DO-200 Standards for Aeronautical Data

An aerodrome survey captures precise geospatial data for all airport infrastructure including runways, taxiways

Airport mapping accuracy standards demand survey-grade Ground Control Points, or GCPs, validated through rigorous field and quality-control processes. CompassData collects GCPs using dual-frequency GPS and GNSS receivers, total stations, and survey methods such as static, rapid-static, and real-time kinematic, or RTK, techniques selected for aerodrome conditions. This field-proven methodology supports airport GIS, engineering, aerodrome mapping, …

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GCP Archive vs. New Collect: Choosing the Right Ground Control Strategy

Buying from a GCP archive is cost-effective for projects where existing points meet accuracy requirements

Archive GCPs are well suited to budget-conscious projects that need a fast turnaround, while new collection delivers site-specific accuracy through CompassData’s field-proven process. New collections use dual-frequency GPS and GNSS receivers, total stations, and methods such as static, rapid-static, and RTK surveys. Each point is cross-checked and validated, making new collection an ideal choice when …

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