This Tender Has Expired

Evaluation will assess: (1) Registration as a service provider for geospatial imagery; (2) Technical capability to produce 0.25m Ground Sample Distance (GSD) digital colour aerial imagery meeting quality standards; (3) Compliance with South African procurement laws and departmental policies.

Supply 0.25m Ground Sample Distance (GSD) digital colour aerial imagery for the Vryheid area. The area of interest is defined by the following tile grid references: 2727–2732, 2827–2832, 2927–2931, 3027–3030, 3127–3130.

Primary eligibility: Pass the operational test as per CD: NGI 'Acquisition for Digital Aerial Imagery' standard (v7, 7 March 2022).

• Sensor system must meet accuracy and data quality standards.
• Proposed aircraft/sensor/peripheral equipment combination must be used for the test.
• Implied: Contractor must have technical capability for GNSS surveys or access to pre-surveyed GCPs for proposed test areas.
• Failure to meet test accuracy thresholds may disqualify the sensor system.

Scope: Supply 0.25m GSD digital colour aerial imagery in Vryheid for CD: NGI.

Operational Test Requirements:

• Conduct test on CD: NGI-approved area before main acquisition.
• Must follow successful Boresight Calibration.
• Use same aircraft/sensor/peripheral equipment as for main programme.

Flight Specifications:

• GSD: 0.25m (or as specified by CD: NGI).
• Minimum two adjacent strips, with:
• Forward overlap: 55–65%.
• Sidelap: 20–30%.
• Tie strips to link east-west strips.
• Orthorectified output must cover at least 15 minutes (5 sheets) East-West and 6 minutes (2 sheets) North-South.
• Full stereoscopic coverage within usable image portions.

Accuracy Standards (2σ confidence):

• GCP easting/northing error: ≤ ±0.068m (max ±0.10m).
• Height error after aerial triangulation: ≤ ±0.12m (max ±0.30m).

Test Area Criteria:

• Must be pre-approved by CD: NGI.
• Minimum four surveyed Photo Ground Control (PGC) points (one per block corner).
• Preferred features: built-up areas, undulating terrain, water bodies, roads, vegetation, natural features (e.g., rivers).
• Pre-identified test areas (examples): Hartebeestpoort Dam (NW), Franschoek (WC), Queenstown (EC).

Deliverables for Test:

• Test area plan.
• Coordinates, height, and description of each GCP.
• Enlargements with GCPs marked at identifiable scale.
• All stipulated documentation.

Note: CD: NGI may provide GCPs for pre-identified areas. For contractor-proposed areas, contractor must supply surveyed PGCs.

• Returnable documents are required. Specific forms or additional submission details are not provided in the document.

• Technical eligibility is strictly defined by passing the Aerial Triangulation & Elevation Capture Evaluation Criteria (ATEC).
• Mandatory requirements:
• Seamless integration with Aerial Triangulation Software.
• Submission of mandatory files and data formats (Camera, GNSS_INS_DATA.TXT, Model, Project, Photo file).
• Successful identification and measurement of ground features (PGC’s).
• Full autocorrelation completion.
• Successful final PhotoT Absolute computation with Maximum Ground Residual values within limits (see Appendix E).
• Elevation capture requirements:
• Capture of elevation data (river courses and ridges) with good ground surface identification.
• Excellent stereoscopic results, no parallax, no lateral shifts, seamless panning.
• Suitability of imagery for DTM validation (successful DTM postings correlation, true-to-ground accuracy validation).
• A responsible manager at the ATEC unit must sign the report to confirm assessment accuracy.

• Supply 0.25m Ground Sample Distance digital colour aerial imagery in Vryheid.
• Aerial Triangulation requirements:
• Seamless integration with Aerial Triangulation Software.
• Provision of mandatory files: Camera (camera specifications), GNSS_INS_DATA.TXT (final observed exterior orientation and RMS values), Model (model sequences), Project (project parameters including image and flying details), Photo file (given exteriors as per GPS/INS file and image).
• Successful identification and measurement of ground features (PGC’s).
• Full autocorrelation completion.
• Successful final PhotoT Absolute computation with Maximum Ground Residual values within specified limits.
• Elevation Capture requirements:
• Capture of elevation data (river courses and ridges) with good ground surface identification.
• Excellent stereoscopic results, no parallax, no lateral shifts, seamless panning.
• Imagery must be suitable for DTM validation (successful DTM postings correlation, true-to-ground accuracy validation).

Eligibility is based on the ability to fully comply with technical specifications. Key implied criteria:

• Capability to perform high-precision aerial triangulation using bundle adjustment with self-calibration and GNSS/INS-assisted processing.
• Access to required inputs: images, camera calibration certificates, INS data, Photo Ground Control Points (PGC), trigonometrical beacon coordinates, and flight plans, all compliant with CD: NGI standards.
• Expertise to deliver outputs meeting accuracy thresholds (e.g., photogrammetric precision ≤ 10 microns, horizontal accuracy ≤ 1.5m at 95% confidence).

Scope: Supply of 0.25m Ground Sample Distance (GSD) digital colour aerial imagery for Vryheid, with exterior orientation parameters for national mapping.

Key Requirements:

• Aerial triangulation must use bundle adjustment with self-calibration and GNSS/INS-assisted processing.
• Minimum of 6 Photo Control Points (PCPs) per model and 9 per image, measured and coordinated.
• Inputs must comply with CD: NGI standards:
• Images (per Standard for Acquisition of Digital Imagery).
• Camera calibration certificate.
• Inertial Navigation System (INS) data.
• Photo Ground Control Points (PGC): fixed horizontally/vertically to National Control Survey Network (NCSN), accuracy ≤ 0.30m in position/elevation.
• Trigonometrical beacon coordinates (per National Control Survey Network standard).
• Flight plan.
• Outputs:
• Final adjusted PCP coordinates (y, x, H) on South African coordinate system, displayed to 1 decimal place (metres).
• Exterior orientation (EO) parameters: coordinates (1 decimal place, metres) and rotation angles (Omega, Phi, Kappa; 6 decimal places, degrees).
• Aerial Triangulation Plan (ATP): digital + hard copy, including job name, area, scale, Lo number, reference ellipsoid, camera details, GSD, imagery date, AT entity/date, and symbol legend (PGC, height control, check points, trig beacons, tie/pass-points, photo numbers, coastline/border features).
• Accuracy standards:
• Photogrammetric measuring precision ≤ 10 microns.
• Horizontal accuracy of adjusted PCPs ≤ 1.5m at 95% confidence.
• Vertical accuracy of adjusted PCPs/check points ≤ 1.8m at 95% confidence.

• Submit all deliverables on a portable hard drive. Include an 'Inventory.txt' file in the root directory listing all contents. Label all hardware, envelopes, and packages with: project name, collection dates, contractor name, and disk/package contents.
• Provide a delivery note on company letterhead (A4 portrait) including: company business address and contact details, page number, date of delivery note, job number, bid reference, job area name, date of award, date range of imagery, date of delivery, executive summary (general job description, overview of reports, data attached, equipment used), noteworthy issues (problems encountered and solutions, weather/terrain comments), deliverables (list of digital media with manufacturer, storage capacity, serial numbers; list of reports and data files submitted; folder structure breakdown), and authorised company representative signature.
• Submit mandatory reports in digital format (and hard copy for Imagery Post Processing Report):
• Survey Report: A4 portrait, company letterhead, positioning methods/equipment, antenna offset, TrigNet base station details, air-station coordinate computation, positional accuracies, exposure frequency, trajectory schematics, datasets overview, imagery dates, rejected/reflown strips, processing results, exterior orientation file, and authorised signature.
• Imagery Post Processing Report: Radiometric/geometric processing overview, pan-sharpening details, output options (format, bit depth, compression, Q factor, tile size, overviews), noteworthy issues, and authorised signature.
• Operations Report: A4 portrait, company letterhead, job number, bid reference, required GSD, equipment manifest (aircraft, pilot, photographer), camera details (type, cone/lens/serial numbers, controls), job imagery table (strip number, image range, altitude, date, time, direction, weather, remarks), and authorised signature.
• Flight Index: A4 portrait, company letterhead, job number, bid reference, strip/image range, date, GSD, flight direction, remarks, and authorised signature.
• Certificate of Lens/Camera Non-Disturbance: Affidavit on company letterhead stating camera/mount/lenses undisturbed since last calibration, including camera/lens details, calibration date, and authorised signature.
• Submit all data in the folder structure required by CD: NGI. Include: raw sensor data, processed images (radiometrically/geometrically corrected), GNSS/IMU data (RINEX format), PDF flight plans, mission planning data, ASCII files (job number, degree squares, area, imagery date/scale, camera/lens/focal length details, image format; and panel info: job number, strip numbers, images per strip, date/time/height/latitude/longitude of each image).
• Retain a copy of all submitted data until written acceptance is received from CD: NGI.

• Technical capability is the primary eligibility criterion. The Chief Director has sole discretion to approve or reject any sensor system.
• Sensor system requirements:
• Must be a large format digital photogrammetric camera with a single robust frame for geometrical integrity.
• Must use separate CCD/CMOS channels for PAN, Red, Green, Blue, and NIR bands (Bayer pattern sensors are not accepted).
• PAN channel must be at full resolution; multispectral bands may be at ≥1/3 of PAN resolution but must support pansharpening.
• Must have a current calibration certificate (geometric and radiometric) archived in the ITIS system, including focal length, lens distortion, and principal point details. Certificate must confirm no disassembly/disturbance since calibration.
• GNSS/INS integration requirements:
• Must use an integrated GNSS (approved by IGS) and INS system for exterior orientation data.
• GNSS antenna must support geodetic-quality carrier-phase multi-channel reception for GPS and GLONASS, installed per CAA requirements.
• IMU must be rigidly attached to the imaging focal plane, with orientation accuracy: roll/pitch ≤20” of arc, heading ≤30” of arc.
• Lever arm (IMU to GNSS antenna) and boresight calibration must be performed by a geomatics practitioner registered with the South African Geomatics Council (SAGC).
• Operational requirements:
• Must perform a boresight calibration (minimum 4 strips, 10 exposures per strip, 55-65% forward overlap, 30-40% sidelap, 5 surveyed PGC points) if the camera/IMU system is disturbed. Submit boresight misalignment angles, aerial triangulation results, spatial offsets, control details, and flight plan for approval.
• Must conduct an operational test on a CD: NGI-approved test area at 0.25m GSD using the same aircraft/sensor/equipment as the main job. Submit test area records (plan, GCP coordinates, enlargements, GNSS/IMU data) for approval. Results must meet sensor calibration data and photogrammetric standards.
• Image quality: Must meet geometric accuracy (≤25% of pixel size), radiometric consistency (12-bit minimum per band), and freedom from defects (clouds, haze, artefacts, smearing, missing pixels).

• Scope: Supply 0.25m Ground Sample Distance (GSD) digital colour aerial imagery in Vryheid for CD: NGI, compliant with the 'Standard for the Acquisition of Digital Aerial Imagery' (QLAS.SD.2_DIM v7).
• Sensor system:
• Large format digital photogrammetric camera only (true nadir; oblique/virtual imagery not accepted).
• Separate channels for PAN, Red, Green, Blue, and NIR bands (no Bayer pattern filtering/resampling).
• Minimum 12-bit radiometric resolution per spectral band.
• Minimum spatial resolution: 5 cm GSD capability.
• Lens distortion: radial ≤0.010 mm (wide-angle), asymmetry ≤0.005 mm, tangential ≤0.005 mm.
• Camera must be protected during take-off/landing; shutter must ensure simultaneous light transmission to all parts of the format without vibrations.
• GNSS/INS integration:
• Integrated GNSS (IGS-approved antenna) and INS required for exterior orientation.
• GNSS antenna must be co-located with the sensor; lever arm (IMU to GNSS antenna) surveyed by a registered SAGC geomatics practitioner.
• IMU must provide absolute orientation (roll, pitch, yaw) with post-processed accuracy: roll/pitch ≤20”, heading ≤30”.
• GNSS PDOP/VDOP <3 during acquisition; data collected for ≥30 minutes pre-flight for ambiguity resolution.
• Flight planning and acquisition:
• All flight lines must be pre-approved by the Chief Director.
• Strips: Designated as EW, WE, SN, NS, or diagonal (NWSE, SENW, etc.). Classified as block strips (EW/WE), tie cross strips (SN/NS), or feature cross strips (for water bodies/borders).
• Forward overlap: 55-65% (minimum 55%); sidelap: 15-40% (target 25%).
• Flying height: Determined by terrain; deviation ≤10% above mean terrain without prior written approval.
• Crab: ≤±5° from average line of flight; differential between successive exposures ≤±5°.
• Tilt: ≤±5° per frame; average tilt for project ≤±1°.
• Course correction between images: ≤3°.
• Solar altitude: ≥30° (average terrain) or ≥40° (mountainous terrain), as specified by Chief Director. Flying times must be approved per job.
• All strips for a job must be flown within one month unless prior written permission is obtained.
• First/last two images per strip must be outside the area of interest.
• No images with >25% sea/large water body coverage accepted.
• Image quality:
• Stereoscopic coverage required for the entire area, extending 25% beyond edges parallel to flight lines.
• GSD deviation: ≤10% from specified 0.25m (lower GSD not permitted).
• Free from: clouds, cloud shadows, fire, smoke, haze, light streaks, excessive snow, artefacts obscuring objects, smearing, blurring, ghosting, missing pixels.
• Consistent contrast, tonal values, and colour representation across the project area.
• Radiometric consistency required for multi-epoch comparisons; dodging/colour balancing only with written Chief Director approval.
• Post-processing:
• Radiometric correction: Compensate for temperature, aperture, or other radiometric factors.
• Geometric correction: Correct lens distortion and tilt per standard.
• Output format: TIFF with JPEG compression (Q=3), tiled, with full overviews.
• Image orientation: Must match IMU data (e.g., North-up for WE flight direction).
• Naming convention: Quarter degree square_calendar year_job number_strip number_photo number_BAND (e.g., 2727A_2010_22_01_0493_RGB).
• Deliverables: Processed RGB/CIR/PAN imagery, raw data, GNSS/IMU data (RINEX + ASCII), flight plans (PDF), mission planning data, reports, and ASCII metadata files (job/panel info).

• No explicit compliance requirements (e.g., CSD, tax clearance, B-BBEE, CIDB, CIPC) are stated in the document.
• Contractors must strictly adhere to the technical and operational provisions of the 'Standard for the Acquisition of Digital Aerial Imagery' (QLAS.SD.2_DIM v7).
• Personnel performing lever-arm and boresight surveys must be geomatics practitioners registered with the South African Geomatics Council (SAGC).

• Technical Enquiries: Dr. Luncedo Ngcofe. Telephone: (021) 658-4316. Email: [email protected]
• Bid/Supply Chain Enquiries: Mr. Mzubanzi Mntumni. Telephone: 079 529 4065. Email: [email protected]
• Demand and Acquisition Management Enquiries: Mr. Sicelo Zwane. Email: [email protected]
• Submission Address: Bid Box, Ground Floor, Foreshore Place, 2 Riebeek Street, Cape Town, 8000.

• Submit your bid in a sealed envelope clearly marked with: your name and address, bid number (SSC WC 06 (2026/2027) DLRRD), and closing date (22 May 2026). Failure to include this information will disqualify your proposal.
• Deposit the bid in the designated Bid Box located at: Ground Floor, Foreshore Place, 2 Riebeek Street, Cape Town, 8000.
• The Bid Box is open 08:00 to 11:00, Monday to Friday. It will be closed at 11:00 on the closing date.
• Late bids will not be accepted under any circumstances.
• Couriers must be instructed to drop the proposal inside the Bid Box; officials will not sign waybills.
• Submit all required SBD forms (GCC, SBD1, SBD2, SBD3.1, SBD4, SBD6.1, SBD8, SBD9, and Terms of Reference). Do not retype the official forms.
• All SBD forms must be signed in original with black ink.
• Include proof of authority to sign the bid (e.g., company resolution, partnership agreement, or joint venture resolution). Failure to submit this will render your bid non-responsive.

• Compliance Requirements:
• Must be registered on the Central Supplier Database (CSD) or provide a valid Tax Compliance Status (TCS) PIN/certificate.
• Foreign bidders must complete the attached questionnaire and provide proof of residency, permanent establishment, or taxation liability in South Africa.
• Must not be listed in the Register for Tender Defaulters or the List of Restricted Suppliers.
• Must declare any employment or relationships with state employees or the procuring institution.
• Financial Capacity:
• Must demonstrate financial capacity to fulfill the contract (e.g., performance security, insurance).
• Tax matters must be in order (valid TCS PIN/certificate required).
• Technical Capability:
• Must have the technical capability to supply 0.25m Ground Sample Distance (GSD) digital colour aerial imagery as specified.
• Previous experience in similar projects may be advantageous.
• B-bbee:
• Submission of a valid B-BBEE Status Level Verification Certificate or Sworn Affidavit (for EMEs & QSEs) is mandatory to qualify for preference points.

• Scope: Supply of 0.25m Ground Sample Distance (GSD) Digital Colour Aerial Imagery for the Vryheid area under the Chief Directorate: National Geospatial Information.
• Work involves multiple specific quarter-degree areas (jobs) listed in the pricing schedule (e.g., 2729D Newcastle, 2730C Madadeni, 2730D Vryheid, etc.).
• You must provide separate costing for each individual job as per the table in the document (paragraph 8.1.1).
• Prices quoted must not be conditional on securing other bids; no discounted package prices will be accepted.
• Deliverables must meet the specifications outlined in the attached Terms of Reference (Section 4).
• Total cost must include all hidden costs and be broken down per job.

• Use the provided SBD 3.1 Pricing Schedule for Professional Services to submit your pricing.
• Prices must be quoted in South African Rand (ZAR) and include all applicable taxes (VAT, PAYE, income tax, UIF, SDL).
• Provide a total offer price inclusive of VAT.
• Payment will be made upon completion of each job.
• Indicate if your quoted rates are firm for the full contract period. If not, detail the basis for adjustments (e.g., Consumer Price Index).
• Sole agents/suppliers must indicate their market price after discount or percentage net profit before tax for fairness assessment.
• Offer validity: 90 days from the closing date of the bid.

• Tax Compliance: Submit your SARS-issued Tax Compliance Status (TCS) PIN or a printed TCS certificate. If not available but registered on the Central Supplier Database (CSD), provide your CSD number. Failure to comply will render your bid invalid.
• For consortia/joint ventures/sub-contractors: Each party must submit a separate TCS certificate/PIN/CSD number.
• B-BBEE: A valid B-BBEE Status Level Verification Certificate or Sworn Affidavit (for EMEs & QSEs) must be submitted to qualify for preference points.
• Foreign Suppliers: Must complete the attached questionnaire regarding residency, establishment, and tax liability in South Africa.
• General Compliance: Ensure you are not listed on the Register for Tender Defaulters or the List of Restricted Suppliers, as this leads to automatic disqualification.
• Proof of Authority: Submit proof of authority to sign the bid (e.g., company resolution, partnership agreement).

Evaluation will focus on technical capability to meet the aerial imagery and supplementary file format specifications. Key areas: aerial survey expertise, photogrammetry proficiency, and precise compliance with file formatting standards (GNNS_INS, Camera, Project, Model, Photo files).

Supply 0.25m Ground Sample Distance digital colour aerial imagery in Vryheid. Deliverables must include:

• GNNS_INS file: Image positioning, camera-GNNS/INS integration, boresight calibration, image ID, 3D coordinates, exterior orientations, timestamps. Archive per job per ITIS standard. Conform to sample_GNNS_INS_DATA.TXT.
• Camera file: Parameter settings for stereo model setup in Digital Photogrammetric Workstation (DPW). Archive per job per ITIS standard. Conform to sample_camera.txt.
• Project file: Project parameters for DPW and aerial triangulation. Archive per job per ITIS standard. Conform to sample_project.txt.
• Model file: Model sequence identification for the entire job. Archive per job per ITIS standard. Conform to sample_model.txt.
• Photo file: Photo parameters for every photo within the Area of Interest (AOI). Archive per job per ITIS standard. Conform to sample_photo.txt.

Eligibility likely requires: Proven experience in aerial surveying. Appropriate equipment for 0.25m GSD digital colour aerial imagery. Qualified personnel. Compliance with South African procurement regulations. Familiarity with TrigNet Stations (South African geodetic network) may be advantageous.

Scope: Supply of 0.25m Ground Sample Distance (GSD) digital colour aerial imagery in Vryheid. Deliverables: High-resolution digital colour aerial imagery. Target area: Vryheid. Reference: TrigNet Stations 2019 may indicate use of South African geodetic network for accuracy.