Class 11 Geography Ch 6 Introduction to Remote Sensing
What is remote sensing?
Remote sensing refers to the process of collecting data about the Earth’s surface without direct physical contact. It involves using sensors to gather information from a distance from satellites or aircraft.
How does remote sensing work?
Remote sensing works by detecting and measuring electromagnetic radiation reflected or emitted from the Earth’s surface. Sensors onboard satellites or aircraft capture this radiation, which is then processed to create images and extract valuable information about the environment.
What are the applications of remote sensing?
Remote sensing has various applications across different fields, including agriculture, forestry, urban planning, environmental monitoring, disaster management, and climate studies. It is used for mapping land use and land cover, assessing vegetation health, monitoring changes in the environment, and detecting natural disasters.
What are the different types of remote sensing sensors?
Remote sensing sensors can be classified into two main types: photographic and non-photographic (digital) sensors. Photographic sensors, such as cameras, record images on light-sensitive film. Non-photographic sensors, such as scanners, capture images in digital format.
What are the stages involved in remote sensing data acquisition?
The stages in remote sensing data acquisition include:
- Source of energy (sun/self-emission)
- Transmission of energy from the source to the Earth’s surface
- Interaction of energy with the Earth’s surface
- Propagation of reflected/emitted energy through the atmosphere
- Detection of energy by the sensor
- Conversion of energy into photographic/digital form
- Extraction of information from the data
- Conversion of information into map/tabular forms
Chapter 6: Introduction to Remote Sensing| Class 11 Geography Practical Work
Class 11 Geography Ch 6 Introduction to Remote Sensing Notes: Introduction to Remote Sensing is the sixth chapter in CBSE Class 11 Geography, which discusses the concept of Remote Sensing and its various forms. The chapter explains how this technique works, its different methods, and how it’s used in various fields like geography, agriculture, and environmental science.
Students learn about the sensors used to collect data, like cameras and scanners, and how they create images and information about the Earth. They also learn how to analyze this data to understand changes in things like land use, vegetation, and the environment. Overall, the chapter helps students understand how remote sensing helps us learn more about our planet from afar.
Chapter 6: Introduction to Remote Sensing| Class 11 Geography Practical Work