Authentic airborne view over the Black Sea coastal setting photographed during the 2024 acquisition campaign.
STRATEGIC INFRASTRUCTURE · AIRBORNE LiDAR

Geospatial Baseline for Nuclear Site Investigation in Thrace, Türkiye

Approximately 2,000 km², 27 missions, about 70 airborne hours and nine QA blocks — a controlled geospatial baseline for complex site investigation.

LocationThrace / Black Sea region, Türkiye
Direct clientBIRLIK HARITA
Acquisition / QC period03.2024 – 05.2024
MapSoft roleContracted specialist service supplier to BIRLIK HARITA for simultaneous aerial imaging, airborne LiDAR acquisition, direct georeferencing, initial processing, ground/bare-earth classification and technical QA/QC. BIRLIK HARITA was responsible for building and vegetation classification and final orthophoto production.
Project context

A dependable geospatial baseline for a high-consequence strategic-site investigation

The survey formed the geospatial foundation for a wider technical investigation in Thrace. MapSoft's documented responsibility was precise and limited: capture, process and quality-control terrain and imagery data that multidisciplinary teams could use as a reliable spatial input layer.

2,000 km²Approximate survey area
27Acquisition missions
70 hAirborne acquisition time
9Processing / QC blocks
Landscape field view showing the coastal terrain and real airborne acquisition context.
Black Sea coastal acquisition context
Field acquisition

The survey formed the geospatial-foundation layer of a wider technical investigation for a potential nuclear-energy site in Thrace. Multidisciplinary site-characterization teams require reliable terrain and imagery inputs, but those downstream studies are programme context. MapSoft's defensible objective was to capture, process and quality-control a large geospatial baseline, not to select the nuclear site or perform nuclear, geological, geotechnical, seismic, hydrological/coastal-hazard or environmental engineering.

Geospatial foundation — not nuclear-site selection or nuclear engineering

The wider programme included multidisciplinary site-characterization work. MapSoft's documented role was limited to geospatial acquisition, processing and QA; site selection and nuclear, geological, geotechnical, seismic, coastal-hazard and environmental engineering were outside its scope.

Airborne acquisition

Twenty-seven missions combined LiDAR and aerial imaging across a large coastal study area

The programme required simultaneous airborne LiDAR and imagery, repeated mission control, flight-permission coordination and a production structure that could keep every acquisition traceable from the aircraft to the final QC package.

Regional satellite view with the realized survey-flight trajectory, illustrating the operational scale of the airborne campaign.
Full survey-flight trajectory from Çorlu to the project area
Field photograph of the airborne platform during equipment checks and preparation before acquisition.
Pre-flight airborne system preparation
Close field view of technical preparation and inspection of the airborne mapping platform before flight.
Airborne platform equipment inspection
01

Coordinate permits and local operational support

02

Acquire simultaneous imagery and LiDAR over 27 missions

03

Post-process GNSS/INS trajectory and generate SBET

04

Georeference, colourize and adjust LiDAR strips

05

Evaluate coverage, density and control by block

06

Produce the final QC evidence package

Campaign organization

Mission-scale acquisition was converted into a nine-block production and QA system

The final QC structure grouped 27 acquisition missions into nine processing / quality-control blocks. This made trajectory, strip, coverage, density and vertical-control checks manageable across a study area of approximately 2,000 km².

Regional project map showing the nine processing and quality-control blocks used to structure production and validation.
Nine-block processing and QC organization
Direct georeferencing & processing

Navigation, LiDAR and imagery were processed as one controlled geospatial chain

GNSS/INS trajectory processing, SBET generation, direct georeferencing, LiDAR colourization, strip adjustment and terrain-focused classification were handled as connected technical stages. Processing remained inside Türkiye under the project's data-localization restrictions.

SILA 750airborne platform
Galaxy T1000airborne LiDAR
Phase One iXU-RS1000RGB/NIR imaging
Applanix AP50direct georeferencing
POSPac MMSGNSS/INS + SBET
LAS 1.4georeferenced point cloud
Controlled delivery

The processing model had to respect data-localization and confidentiality constraints

Project data were not permitted to leave Türkiye. MapSoft therefore processed the acquired data in-country and maintained mission- and block-level traceability while working within the documented confidentiality framework.

Measured QA/QC

Quality was demonstrated with measured residuals, strip comparison and density verification

The final QC package did not rely on a single acceptance number. It documented mission trajectories, relative strip consistency, vertical control, total density, ground density and area coverage by processing block.

0.030–0.075 mBlock point-to-plane RMS range
−0.022 → +0.003 mblock mean height-offset range
99.78%Best block total-density compliance
Technical height-difference map used to evaluate relative alignment and consistency between overlapping LiDAR strips.
Overlapping-strip height-difference map
One-metre-cell density visualization used to verify point-cloud coverage and density performance.
LiDAR point-density verification
Height-residual chart from LiDAR control points used as evidence of absolute vertical-control performance.
LiDAR control-point height residuals
Position-error RMS trace used in mission-level trajectory quality assessment and georeferencing control.
Mission-level GNSS/INS position-error RMS

Measured QA/QC. The final QC report documents designed-versus-realized mission review, GNSS/INS trajectory statistics, tie-plane strip adjustment, control-field vertical checks, one-metre total-density grids, 40 × 40 m ground-density grids and full coverage checks by block. Reported block mean height offsets range from −0.022 m to +0.003 m, height standard deviations from 0.009 m to 0.023 m and point-to-plane RMS from 0.030 m to 0.075 m. Processing remained in Türkiye under data-localization and confidentiality restrictions.

Delivered geospatial baseline

A controlled stack of imagery, LiDAR, terrain data and QA evidence

The project delivery connected raw airborne acquisition to georeferenced datasets and documented technical validation. MapSoft's scope covered airborne acquisition, initial processing, ground/bare-earth classification and QA; building/vegetation classification and final orthophoto production were delivered by the partner.

01

Aerial image dataset

Radiometrically corrected imagery with direct exterior orientation as specified in the contracted delivery.

6.7 cm/pixel contracted specification
02

RGB-colourized georeferenced LiDAR point cloud

Large-area airborne point-cloud baseline.

LAS 1.4
03

Ground / bare-earth classified terrain data

Terrain-focused ground/bare-earth classification delivered within MapSoft scope.

LAS 1.4
04

Trajectory and georeferencing data

Post-processed navigation/SBET used for LiDAR and imagery processing.

Navigation / trajectory data
05

Final Quality Control package

Mission- and block-level acquisition, trajectory, strip adjustment, control, coverage and density evidence; v5.0 dated 28 May 2024.

Technical report
Operational value

A traceable spatial baseline for multidisciplinary technical investigation

MapSoft completed and formally handed over a traceable, quality-controlled airborne geospatial baseline for multidisciplinary site investigation. The result is a geospatial input layer; it is not evidence that MapSoft selected the nuclear site or performed downstream nuclear-safety or engineering studies.

0127 missions integrated into nine QA blocks

02Full-area coverage and density compliance documented by final QC

03Secure in-country processing under data-localization rules

04Reliable terrain/imaging baseline for multidisciplinary site investigation

What this project proves

Thrace demonstrates MapSoft's capacity for secure international large-area airborne mapping: multi-mission LiDAR and imagery acquisition, in-country processing, direct georeferencing, strip adjustment and evidence-led block-level QA. It also demonstrates disciplined scope separation in a high-consequence strategic-infrastructure context.

MapSoft can execute large international airborne programmes under operational and data-handling constraints — combining multi-mission acquisition, direct georeferencing, LiDAR adjustment and block-level QA into one defensible geospatial delivery chain.

~2,000 km²27 missions9 QA blocksAirborne LiDAR + imageryIn-country processingDocumented final QC

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