Satellite Remote Sensing – SS3 Geography Lesson Note (First Term)

Remote sensing is a technology that captures information about objects or areas from a distance without direct contact, using sensors on satellites, aircraft or other platforms. It is used together with GIS, which stores and analyses spatial data. Satellite remote sensing is used in environmental monitoring, agriculture, weather forecasting, disaster management and urban planning.

Behavioural objectives

By the end of the lesson, students should be able to:

1. Explain the concept of remote sensing.
2. Discuss the relationship between remote sensing and GIS.
3. Examine applications of satellite remote sensing.

Instructional techniques

• Identification
• Explanation
• Questions and answers
• Demonstration
• Videos from the source

Instructional materials

• Videos
• Loudspeaker
• Textbook
• Pictures

What is remote sensing?

Remote sensing is a technology that involves capturing information about objects or areas from a distance without direct contact. This is typically done using sensors on satellites, aircraft, or other platforms to collect data from the electromagnetic spectrum.

Remote sensing is applied in fields such as environmental monitoring, agriculture, geology, and urban planning. It provides valuable insights through the analysis of images and data obtained from a distance.

What is the relationship between remote sensing and GIS?

GIS stands for Geographic Information Systems. The two work together in the following ways.

What are the applications of satellite remote sensing?

Satellite remote sensing has diverse applications, including:

1. Environmental monitoring: Track changes in land cover and deforestation, and monitor environmental changes over time.
2. Agriculture: Assess crop health, monitor soil conditions, and optimise irrigation based on satellite data.
3. Weather forecasting: Satellite observations aid in predicting and monitoring weather patterns, enabling timely warnings.
4. Disaster management: Detect and respond to natural disasters like hurricanes, earthquakes, and floods by providing real-time data for assessment and relief efforts.
5. Urban planning: Satellite imagery helps in urban growth monitoring, infrastructure planning, and identifying changes in urban areas.
6. Natural resource management: Monitor and manage resources like water, minerals, and forests through satellite data.
7. Climate change studies: Track changes in climate indicators, ice caps, and sea levels to understand and mitigate climate change impacts.
8. Telecommunications: Satellites are important for global communication, providing coverage to remote areas and supporting various communication services.
9. Military and defence: Satellite imagery is used for reconnaissance, surveillance, and monitoring military activities.
10. Scientific research: Satellite data aids various scientific disciplines, including geology, climatology, and astronomy.

Evaluation

1. What is remote sensing?
2. Discuss the relationship between remote sensing and GIS. Give four points.
3. Mention five applications of satellite remote sensing.