SURVEY BRANCH

 

Land and Survey Department

 

 

 

 

 

 

 

                             Welcome to Land and Survey Website

                                CONTACT US :- Menara Pelita, Jln Tun Abd Rahman Ya'akub,

                                                         Petra Jaya, 93050 Kuching, Sarawak, Malaysia. 

                                                         Tel:+6082-444111  Fax:+6082-449115   

                                                         http://www.landsurvey.sarawak.gov.my

 

 

 

 

 
 

PHOTOGRAMMETRY SECTION : A Glance at Mapping Processes

Introduction

Client Charter

Organisation Structure

>>Section

Geodetic Survey

Project Survey

Workshop

Cartography

Photogrammetry

Photolitho

1. Project Planning

ZEISS T-Plan for Aerial Survey Flight Planning. Pre-marking or Postmarking requirement are determined from project requirements.

 

 

 

2. Global Positioning System Aerial Survey

ZEISS T-Flight Navigation System used for taking aerial photograph. PATB/GPS Block Adjustment used for Aerial Triangulation.

 

 

 

3. Aerial Photographs Sorting

Aerial Photographs are sorted and examined for mapping requirement.

 

 

 

 

4. Ground Control Points(GCP) Identification & Photo control points Selection

Identify the GCP location in the aerial photographs and selection of minor photo control points.

 

 

 

5. Aerial Triangulation

Establishing the coordinates of the minor control points in the Borneo Rectified Skew Orthomorphic Projection. Block Adjustment with automatic aerial triangulation (Match-AT)

 

6. Stereo Data Capturing

Digital photogrammetric data capturing with Kork Digital mapping System or DTM after the photogrammetric Model is set up in the Stereoplotter.

 

7. Digital Data Compilation

The digital data was compiled and edited to standard map sheet in metric cadastral sheet format.

 

 

 

 

8. Digital Display

The graphic display is a Digital
Photogrammetic Database of Kuching City at a scale of 1:2,500 with an accuracy of one meter on the ground.

 

 

9. Digital Terrain Model

Perspective View of a DEM with Grid spacing of 10 meter and a contour layer of 1 meter.

 

 

 

 

10. Digital Terrain Model(DTM)

Perspective View of same DEM with Grid spacing of 10 meter and a contour layer of 2.5 meter.

 

 

 

 

11. Orthophoto Map

 

 

 

 

 Contact Person :

  Lim Siau Chung

  Tel:  082- 444 111 ext : 8100

  email:  limsc@sarawaknet.gov.my

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