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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Plan and check the capture of Geospatial-information from secondary data sources 
SAQA US ID UNIT STANDARD TITLE
258766  Plan and check the capture of Geospatial-information from secondary data sources 
ORIGINATOR
SGB Geographical Information Sciences 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Physical Planning, Design and Management 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 6  Level TBA: Pre-2009 was L6 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2015-07-01  2018-06-30  SAQA 10105/14 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2019-06-30   2022-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
This unit standard will be useful to people who aim to achieve career advancement in the GISc area by gaining skills in understanding the processes involved in the capture of Geospatial-information from secondary data sources.

A person credited with this unit standard is able to:
  • Understand the principles of scanning to capture raster data.
  • Understand the principles of digitising.
  • Understand the principles of Photogrammetry used as a secondary data source for the capture of geo-information.
  • Understand the principles of coordinate geometry in the South African environment. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    The credit calculation is based on the assumption that learners are already competent in terms of the following outcomes or areas of learning when starting to learn towards this unit standard:
  • Capture Geo-information from secondary data sources under supervision.
  • Supervise the capture of Geo-information from secondary data sources.
  • Communication at NQF Level 5.
  • Mathematical Literacy at NQF Level 5. 

  • UNIT STANDARD RANGE 
    Specific range statements are provided in the body of the unit standard where they apply to particular specific outcomes or assessment criteria. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Understand the concepts of scanning as a secondary data source for the capturing of geospatial-information as raster data. 
    OUTCOME RANGE 
    Including but not limited to:
  • Film, paper maps, aerial photographs, images, plans, and charts. 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Reasons for scanning data is understood and explained in the context of the range statement. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to:
  • To reduce wear and tear.
  • To improve access.
  • To store in an integrated database.
  • To index geographically.
  • To georeference in order to provide geographic context for other data.
  • To vectorise.
     

  • ASSESSMENT CRITERION 2 
    Scanning criteria and issues are understood and explained in the context of the range statement. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to:
  • Resolution.
  • Scale.
  • Colour depth.
  • Storage formats.
     

  • ASSESSMENT CRITERION 3 
    The process of geo-rectification is understood, can be explained and carried out in relation to scanned images. 

    ASSESSMENT CRITERION 4 
    Quality control is carried out in accordance with client/user specifications. 
    ASSESSMENT CRITERION RANGE 
    Accuracy, precision, completeness.
     

    SPECIFIC OUTCOME 2 
    Understand the concepts of digitising as a secondary data source for the capturing of geospatial-information as vector data. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The components and functionality of a digitiser are described in the context of the range statement. 
    ASSESSMENT CRITERION RANGE 
    Include but not limited to:
  • Digitiser tablet, puck, digitising software, and source data.
     

  • ASSESSMENT CRITERION 2 
    The principles of digitising are understood and can be explained in the context of the range statement. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to:
  • Transformation parameters, feature identification, digitiser modes, storage formats and preparation for edge matching.
     

  • ASSESSMENT CRITERION 3 
    A digitising procedure is developed according to client/user specifications in the context of the range statement. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to:
  • Control points, accuracy, scale, and features.
     

  • ASSESSMENT CRITERION 4 
    Quality control is performed on digitised data to assess conformance to client/user specifications. 

    SPECIFIC OUTCOME 3 
    Understand the basic principles of Photogrammetry when used as a secondary data source for the capture of geospatial-information. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Basic principles of stereometric image formation is understood and explained. 

    ASSESSMENT CRITERION 2 
    The basic characteristics of aerial sensor systems are understood and explained. 
    ASSESSMENT CRITERION RANGE 
    Both space-borne and air-borne aerial sensor systems.
     

    ASSESSMENT CRITERION 3 
    The process whereby coordinate data can be extracted from remotely sensed imagery are understood and explained. 

    ASSESSMENT CRITERION 4 
    Model accuracy is understood and explained in the context of the range statement. 
    ASSESSMENT CRITERION RANGE 
    Range to object, image resolution, and camera position.
     

    ASSESSMENT CRITERION 5 
    The basic production steps necessary to complete a photogrammetric project are understood and explained. 

    SPECIFIC OUTCOME 4 
    Understand the basic principles of the South African geodetic model as defined by the South African National Mapping organisation. 
    OUTCOME RANGE 
    Datums, co-ordinate systems, projections. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Analytic geometry is understood and explained in relation to the capture of spatial data from secondary sources. 

    ASSESSMENT CRITERION 2 
    Documents such as cadastral records, maps, etc. conveying coordinate information are understood in the context as a source for the capture of spatial data. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to:
  • General Plans, survey diagrams, national map series, etc.
     

  • ASSESSMENT CRITERION 3 
    Different sets of coordinates are converted to fit different Geographical Information projects in terms of there respective specifications. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to:
  • Degrees, Minutes and Seconds.
  • Decimal Degrees.
  • Cartesian Coordinates.
  • LO coordinates.
  • Map projections.
     


  • UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard must be accredited as a provider through the relevant ETQA by SAQA.
  • Moderation of assessment will be overseen by the relevant ETQA according to the moderation guidelines and the agreed ETQA procedures. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Essential embedded knowledge is dealt with under the specific outcomes section where "Demonstrate Knowledge and Understanding" is required. 

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Solve problems. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team/group/organisation or community. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage oneself and one's activities responsibly and effectively. 

    UNIT STANDARD CCFO COLLECTING 
    Collect, organise and critically evaluate information. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using visual, mathematics and language skills in the modes of oral and written presentations. 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically (showing responsibility towards the environment and health of others). 

    UNIT STANDARD CCFO DEMONSTRATING 
    Display an understanding of the world as a set of related systems. 

    UNIT STANDARD CCFO CONTRIBUTING 
    Contribute to the full development of each learner and the social and economic development of society at large. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    Terminology:
  • Photogrammetry: Is the science of obtaining reliable measurements, maps, digital elevation models, and other GIS data from remotely sensed imagery such as aerial photographs and satellite images.
  • Analytic geometry (Also - Coordinate Geometry): Refers to the study of two or three dimensional set of numbers that make up different points within a coordinate system and is used to represent points, lines and polygons. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  63689   Bachelor of Arts: Geographical Information Science  Level 6  Level TBA: Pre-2009 was L6  Reregistered  2018-06-30   
    Elective  63711   Bachelor of Geographical Information Science (GISc)  Level 7  NQF Level 07  Reregistered  2018-06-30   


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.