Photogrammetry   |  Field Survey   |  Carto GIS   |  Carto   |  Printing   |  Quality Control


This section, a part of Geographic Data Production is where data is acquired in a 3D stereo environment using aerial photographs.

Major Tasks
Prepare flying plan for aerial photography
Carry out aerial triangulation to produce rectified integrated model
Digitally derive map compilation related data and information from aerial photographs
Scan aerial photographs using precision scanner
Check and revise the photogrammetric part of work carried out by companies.



This section carries out the duties of collecting data in the field.

Major Tasks
Construction of national control network and its maintenance
Construction of control points for aerial photographs
Construction of benchmarks
Review of maps before production
Updating maps after their production using GPS
Quality control for international border demarcation
Provision of technical support for any border mark fixation that been tampered with or affected by weather conditions
Quality control for survey projects pertaining to government departments and companies
Construction of control and leveling points for ministries and other government bodies and companies implementing any project
Compilation of different survey reports that will be kept in the geographic national archive
Compilation of large scale detailed surveys
Determination of Qiblah direction for mosques and provision of assistance to Ministry of Awqaf and Religious Affairs on the same subject



This section looks after activities such as: Data conversion from one format to other, undertaking customized projects, data cleaning and attribution as well as acting as a gateway between the Geographic Data Production and the Quality Control sections.

Major Tasks
VMap Data creation for RAFO
Creation/Updation of customized maps (raster &vector)
GIS Data creation, conversion, cleaning , checking and validation
GIS Data Analysis
Technical Support services

CARTO EDPS & Graphic Design:

This section prepares maps, charts, diagrams and other graphic art work for publication.

Major Tasks
Generalisation of data
Assigning feature symbology
Preparing topographic map layout
Checking and correcting TLMs, Repmat
Preparing other maps like Tourist Maps, Town Plans etc.

Reprographics & Printing:

This section Consists of several smaller sections:-
Scanning & Plotting section
Colour correction, Digital proofing & Separation section

Major Tasks
Computer to Plate (CTP) System (4 Colour CMYK Separates)
Scanning of Paper, film & Digital Plotting of Films
Colour Corrections & Separations
Aerial Photography Support


Quality Control (QC/QA)

This section ensures that all Geospatial Data Materials produced or received by NSA is quality checked in accordance with standards and specifications and that all NSA Geospatial Data Materials supplied to meet customer requests, is quality checked in accordance with standards and specifications.

Major Tasks
Ensure that all geospatial data destined for the NSA Geospatial Database meets the required standard and specification
Ensure that all Geospatial Data Materials produced by NSA is checked and approved before publication
Ensure that all data supplied to customers: meets the requirement, is readable and packaged correctly
Ensure that all data received by NSA is checked and assessed for quality and usability
Review and establish adequate QA/QC procedures within all of NSAs sections
Establish and maintain Standard Operating Procedures (SOPs) and checklists for QA/QC procedures within the QA/QC Section
Maintain close links with other Sections to provide advice on matters relating to QA/QC.



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