Principles of Remote Sensing

Remote sensing is the science of obtaining information about objects or areas from a distance, typically from aircraft or satellites. The principles of remote sensing include:

1. Electromagnetic Energy: Remote sensing works by detecting and measuring electromagnetic energy that is reflected, emitted, or transmitted from objects or surfaces. This energy travels through space at the speed of light and can be detected by sensors on aircraft or satellites.

2. Electromagnetic Spectrum: The electromagnetic spectrum is the range of all types of electromagnetic radiation. Remote sensing uses different parts of the electromagnetic spectrum to detect different types of objects or features. For example, visible light is used to detect vegetation, while radar is used to detect topography.

3. Interaction of Energy with Atmosphere: As electromagnetic energy travels through the atmosphere, it can be scattered, absorbed, or reflected by particles in the air. This can affect the accuracy of remote sensing data and must be taken into account when interpreting the results.

4. Interaction of Energy with Surface: When electromagnetic energy reaches the surface of the Earth, it can be absorbed or reflected by different types of materials. This can be used to detect features such as water, vegetation, or buildings.

5. Data Analysis: Remote sensing data must be processed and analyzed to extract useful information. This can involve techniques such as image classification, change detection, or spatial analysis.

Answer:

The correct answer is option A - Interaction of energy with satellite. This is not a principle of remote sensing, as the satellite is simply a platform for collecting and transmitting remote sensing data. The principles of remote sensing relate to the interaction of electromagnetic energy with objects or surfaces on the Earth's surface.