Using the SANSA Earth Observation Catalogue
The SANSA Earth Observation catalogue contains an extensive archive of satellite imagery dating back as early as 1972. Archived satellite images can be previewed and ordered through the catalogue. SANSA Earth Observation fund all data on the catalogue to South African students on the grounds that it be used solely for research and learning purposes.
Click read more for help on using the catalogue.
Funded Satellite Imagery on the SANSA Earth Observation Catalogue
The SANSA Earth Observation catalogue has an extensive satellite porfolio. Earth Observation fund satellite imagery for student research and learning.
For useful links and information regarding funded satellite imagery available through the catalogue, please click read more.
SPOT 5 Products
The first reception of SPOT satellite imagery began in the late 80's. To date SANSA has tracked and archived thousands of SPOT satellite images. In 2002, SANSA Space operations began tracking and archiving SPOT 5 imagery. In 2006, the Earth Observation directorate began creating the SPOT 5 national mosaic. This article discusses the different SPOT 5 processing levels offered by SANSA Earth Observation as well as the specifications of the satellite. Click read more for the full article.
Landsat 7 Products
SANSA collects and archives Landsat 7 imagery falling within the Southern African Democratic Countries (SADC) footprint. Landsat 7 products and processing levels can be specified and ordered on the SANSA Earth Observation Catalogue. The panchromatic and multi-spectral imagery can be fused to produce a pan-sharpened multi-spectral image at a resolution of ~15m. Further processing of imagery includes ground control point collection, orthorectification, at sensor reflectance calculations, mosaicking, clipping and atmospheric correction. For the full article, click read more.
A Brief History of SANSA's Earth Observation
In 2008 the South African government's Department of Science and Technology (DST) set out to develop the nations Space capabilities. The Satellte Applications Centre was identified as one of the key centres to form what is known today as the South African National Space Agency (SANSA). The remotely located Space Operations in Hartebeesthoek was previously home to SANSA's Earth Observation directorate. In 2013, SANSA's Earth Observation team relocated to Pretoria in order to better represent SANSA and engage with stakeholders.Click read more for a brief history of SANSA's Earth Observation.
Open Source GIS & RS Software
This page contains links to some of the most widely used open source GIS and remote sensing software. Students can find a variety of software to perform both image analysis and image processing.
Geo-matching.com is the independent product comparison website for professional hard- and software for geomatics and adjacent fields. This site can be used to compare more than 500 products. Students can use this resource to compare satellite imagery and get a detailed list of specifications.
The CEOS Visualization Environment (COVE) tool is a browser-based system that leverages Google-Earth to display satellite sensor coverage areas and identify coincidence scene locations. The tool allows one to rapidly generate a tabular display of predicted overpasses of specific satellites over a particular region.
The Wide Area Monitoring Information System (WAMIS) portal consists of a collection of satellite-based information services providing near real-time monitoring and mapping capabilities of natural events such as Fires, Floods, and Droughts occurring within Southern Africa. This web portal is developed and maintained by the Meraka Institute (CSIR), Remote Sensing Research Unit.
Established in 2002 the South African Earth Observation Network (SAEON) is funded by the Department of Science and Technology (DST) and developed by the National Research Fund (NRF). SAEON is an institutionalised network of departments, universities, science institutions and industrial partners. SAEON offers students many useful resources on earth observation science.
African Association of Remote Sensing of the Environment (AARSE)
The African Association of Remote Sensing of the Environment (AARSE) was founded in 1992 and was incorporated in 2008 as an international Non-Government Organization (NGO) under Section 21 of the South African Companies Act 61 of 1973. The primary aim of AARSE is to increase the awareness of African governments and their institutions, the private sector and the society at large, about the empowering and enhancing benefits of developing, applying and utilizing responsibly, the products and services of Earth Observation Systems and Geo-information Technology. AARSE host biannual conferences which focus on African remote sensing research.
National Geo-spatial Information (NGI)
National Geo-spatial Information (NGI) has been mandated as the national mapping authorithy of South Africa. Under Land Survey Act 8 of 1997, NGI has been tasked to regulate the survey of land in the Republic; and to provide for matters connected therewith. NGI provide an archive of aerial photography dating back to the 1930's and photographic coverage of the entire country is updated continuously with their Digital Mapping Camera. In addition to this, NGI provide maps and geo-spatial information, geodetic and control survey services and more. Visit NGI to find out more.
Council for Geoscience
The Council for Geoscience (CGS) is one of the National Science Councils of South Africa and is the legal successor of the Geological Survey of South Africa, which was formed in 1912 by the amalgamation of 3 former Surveys, the oldest of which - the Geological Commission of the Cape of Good Hope - was founded in 1895. The Geoscience Act, Act 100 of 1993, established the CGS in its present form. Today, the Council is a modern institution, boasting excellent facilities and expertise, ranking among the best in Africa. The Council for Geosciences provides expert earth-science information and services to improve the management of natural resources and the environment for a better quality of life for all.
The eoPortal aims to open the door to the world of Earth Observation resources by giving access to a large variety of information and services, eoPortal aims to provide a single access point for Earth Observation information and services including satellite imagery, a directory to locate data and resources, direct access to earth-observing satellite data as well as map servers and cartographic resources.
This is a Geoportal of the Indian Space Research Organisation Showcasing Indian Imaging Capabilities in the Multi-sensor, Multi-platform and Multi-temporal domain. This Earth browser gives a gateway to explore and discover the virtual earth in 3D space with specific emphasis on the Indian Region.
Click the go to link to view the Erdas archived webinars page. Students using Erdas software will find a wealth of information here. Note: These videos are available in WMV (Windows Media Player) format only.
ArcGIS Resorce Center
Find maps and applications, blog posts, forum threads, videos, documentation, and tweets for your community. In addition to this find many useful tutorials to help you with your own GIS analysis,
Udacity - Learn. Think . Do.
Udacity was established in 2011 by Sebastian Thrun, David Stavens and Mike Sokolsky. By educating students across the globe, Udacity is democratizing education. Udacity has many active courses. Udacity is free, enroll today for courses in computer science, statistics, and more..
On this page you will find a variety of links with descriptions to earth observation resources, ranging from user guides, commercial catalogues to free data sources, other portals and softwares. Should you know of any other interesting links, please send them to us and we will add them to the resources webpage.