Document

REPORT ON:  DETAILED AERIAL, LAND SURVEY AND GIS ANALYSIS FOR ADVANCED REAL ESTATE DEVELOPMENT

1.0      Introduction


Geoinfotech Resources Limited was awarded a project to execute Drone Mapping/Survey for James Falola Family Site located at Ibogun Osungboye town, Ifo loca government area of Ogun State. The project was carried out between 13th  of February, 2024 and was concluded on the 16th February, 2024 with the submission of all deliverables and technical report. This report describes in detail the works carried out.

1.1      Project Specifications

The scope of work for this project is as follows:

        Reconnaissance Survey for Ground Control Points

        Establishment of Ground Controls

        Data Computation and Error Validation

        Drone Mapping for Data Capture

        Drone Deployment Photography & Processing

        Drone Data Processing with Agisoft Software for Orthophotos

      Vectorization/Digitization    for    Property    Plot    Delineation    (Attributes,    Id, Coordinates, Perimeter and Area)

      Deliverables (Softcopy of Orthophotos, Drawing, Jpeg, Geotiff and PDF & Video, Photos of the entire study site)

        Report to be presented using Ms Office Suite

Project

2.0      Project Personnel and Equipment

2.1      Personnel:

The following personnel made up the project team that carried out the project

Personnel

Designation

ResponsibilityName
Project Coordinator

(Drone Pilot)

Management and CoordinationMakinde Temitope
SurveyorData Acquisition and GCP

establishment with Tersus GNSS Receiver

Surv. Jamba-oda Yinka
Assistant PilotDrone Deployment for MappingShorungbe Boluwatife
Data AnalystsDrone Data Processing, Digitization

Result Presentation

Makinde Temitope, Shorungbe Boluwatife  & Surv. Jamba-oda Yinka

Project

2.2      Equipment:

The following equipment were used in the execution of the project.

– Unmanned Aircraft Systems (Drones)

– A Tersus GNSS Receiver and its accessories

– Black spray paints for GCPs marking

Akute Project

2.3      Data Processing Software & Result Presentation:

– A Digital Mapping Workstation

– Pix4D Software

– ArcGIS pro

– MS Office Suite

2.4      Logistics

All personnel were issued standard Personnel Protective Equipment (PPE)

 

3.0      Methodology

3.1      Project Strategy

The project was carried out in two phases namely, Field Work

Office Work

3.2      Field Work Phase

The works carried out under the Field Work Phase are

–    Mobilization

–      Reconnaissance: Site inspection was carried out to get an over view of the extent and to take into cognizance of the existing features within the study site for proper planning for seamless data acquisition.

–      Establishment of GCPs: Ground Control Points were established using spray paints.

–    GCPs Data Acquisition: The instrument was operated in 3Dimensional mode i.e.

Easting, Northing and Heights coordinates were acquired in order to use these points for Geo-rectification.

–      Unmanned  Aerial  Vehicles  were  deployed  for  mapping  of  the  entire  estate, different missions (flight plans) were created for effective aerial mapping.

3.3      Office Work Phase

The works carried out under the Office Work Phase are:

–    Data Cataloguing: Acquired field data for the GCPs was downloaded from the

GNSS receiver.

–    The captured imageries, photographs and videos were also downloaded from the

UAV devices.

–    Data  processing  and  Analysis:  The  imageries  were  processed  using  Drone

Imagery Processing Software (Pix4D).

        The Imageries & Ground Control Point Coordinates were loaded into the

Pix4D software

        The Imagery was aligned and geo-rectified

        The DEM and Orthophotos were exported as (Geotiff)

      The generated Orthophoto was imported into ArcGIS pro for extraction (digitization/vectorization) of land parcels and the site was digitized, ID, Perimeter and Area in square meters were calculated for each of the plots.

      Cartographic embellishment was carried out for the digitized plots and hence the map is ready for presentation.

        The  map  was  presented  to  some  members  of  the  project  committee

(Clients) for vetting and corrections.

–      Data Presentation: the various layers were combined and due corrections were made after thorough checks. The result was then presented in softcopy and hardcopy

–    Reporting

–    Printing of produced layers of maps

–    Submission of Deliverables

4.0      Deliverables

The deliverables for the project are in both hardcopy and softcopy and are as stated in the table below:

TypeDescription
Spatial Data3D data of all acquired points on site in MS Excel file format, DEM & Orthophotos
Plan Production in SoftcopyMap showing Details & Topographical Survey, Land

Parcels in PDF format

ReportPDF and Word format

5.0      Conclusions

The Drone Mapping and Digitization were completed and on careful analysis of the data acquired, the results of the data processing and the plans produced, we safely came to the following conclusions:

The maps produced as a result of the drone mapping and digitization is a true and realistic representation of the subject site as at the time the survey was carried out.

The mapping was carried out in full accordance with existing specifications, survey laws and regulations and in compliance with our company Quality Control.

 

 

Date: March 4, 2024
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