- "Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation."
The behavior and properties of electromagnetic radiation that is emitted or reflected from the Earth's surface or atmosphere and detected by sensors on remote sensing platforms.
Electromagnetic spectrum: The range of frequencies of electromagnetic radiation and their properties, including wavelength, frequency, and energy.
Wave-particle duality: A concept that describes the behavior of electromagnetic radiation both as a wave and as a particle.
Properties of light: Light is an electromagnetic wave with properties such as intensity, polarization, and phase.
Reflection, refraction, and transmission: The behavior of electromagnetic radiation when it interacts with different types of materials, including mirrors, lenses, and filters.
Absorption and emissivity: How materials absorb and emit electromagnetic radiation, as well as their particular spectra.
Radiation transfer: The processes that radiation undergoes when moving through various media and how it is affected by scattering, absorption, and emission events.
Radiative transfer models: The mathematical models used to simulate the transfer of electromagnetic radiation in different environments.
Remote sensing sensors: The types of sensors used to detect electromagnetic radiation and their applications in Earth sciences, such as passive and active remote sensing.
Imaging sensors: The sensors used to capture images of Earth's surface and the various spectral bands that they use, including visible, near-infrared, thermal, and microwave.
Image processing techniques: The methods used to analyze and interpret remote sensing data, such as image classification, feature extraction, and data fusion.
Applications of remote sensing: The various fields of Earth sciences that benefit from remote sensing, such as agriculture, forestry, geology, environmental studies, and urban planning.
Spectroscopy: The study of the interaction between matter and different frequencies of electromagnetic radiation, and its application in remote sensing.
Radiometry: The measurement of the intensity of electromagnetic radiation, its different units, and how data is collected and analyzed.
Polarimetry: The measurement of the polarization properties of electromagnetic radiation and its applications in remote sensing.
Interferometry: The method of combining electromagnetic waves from multiple sources to create high-resolution images, commonly used in SAR (Synthetic Aperture Radar) remote sensing.
Radio Waves: The longest wavelength and lowest frequency electromagnetic radiation used for communication and broadcasting.
Microwaves: Shorter wavelengths than radio waves and used for communication, cooking, and remote sensing.
Infrared Radiation: The portion of the electromagnetic spectrum with longer wavelengths than visible light but shorter than microwaves. Used for remote sensing of temperature and energy emissions.
Visible Light: The portion of the electromagnetic spectrum that can be seen by humans with wavelengths between 400-700 nm.
Ultraviolet Radiation: The portion of the electromagnetic spectrum with shorter wavelengths than visible light, given off by the sun and can cause skin damage.
X-Rays: The high-energy electromagnetic radiation used in medicine for imaging bones and detecting cancers.
Gamma Rays: The highest-energy electromagnetic radiation with the shortest wavelengths emitted by radioactive materials, nuclear explosions, and black holes.
- "Remote sensing is used in numerous fields, including geophysics, geography, land surveying, and most Earth science disciplines."
- "Exploration geophysics, hydrology, ecology, meteorology, oceanography, glaciology, geology"
- "It also has military, intelligence, commercial, economic, planning, and humanitarian applications, among others."
- "The term remote sensing generally refers to the use of satellite- or aircraft-based sensor technologies to detect and classify objects on Earth."
- "It includes the surface and the atmosphere and oceans, based on propagated signals."
- "Active remote sensing is when a signal is emitted by a satellite or aircraft to the object and its reflection detected by the sensor." - "Passive remote sensing is when the reflection of sunlight is detected by the sensor."
- "The term is applied especially to acquiring information about Earth and other planets."
- "It includes the surface and the atmosphere and oceans, based on propagated signals (e.g. electromagnetic radiation)."
- "It may be split into 'active' remote sensing and 'passive' remote sensing."
- "Active remote sensing is when a signal is emitted by a satellite or aircraft to the object and its reflection detected by the sensor." - "Passive remote sensing is when the reflection of sunlight is detected by the sensor."
- "The term remote sensing generally refers to the use of satellite- or aircraft-based sensor technologies to detect and classify objects on Earth."
- "It includes the surface and the atmosphere and oceans, based on propagated signals (e.g. electromagnetic radiation)."
- "Exploration geophysics, hydrology, ecology, meteorology, oceanography, glaciology, geology"
- "It also has military, intelligence, commercial, economic, planning, and humanitarian applications, among others."
- "Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation."
- "The term is applied especially to acquiring information about Earth and other planets."
- "Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object."
- "Remote sensing is used in numerous fields, including geophysics, geography, land surveying and most Earth science disciplines."
- "Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation."