- "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."
A study of the legal and policy issues related to remote sensing and Earth observation from space, including privacy, security, and intellectual property.
Principles of Remote Sensing: This involves understanding the basic principles of remote sensing to appreciate the relevant satellite data for Earth observation.
Types of Remote Sensing platforms: There are different types of platforms (airborne, space-borne, ground-based) that are used for Earth observation.
Satellite Orbits and Characteristics: This involves learning about the various satellite orbits and their characteristics to understand different sensors' limitations.
Remote Sensing Systems: Understanding the components of a remote sensing system and their function is paramount, including sensors, data transmission, processing, and storage.
Image Processing and Analysis: The handling, pre-processing, and analysis of remote sensing images is an integral part of Earth observation techniques.
Image Classification: This process involves categorizing or grouping remote sensing images based on similar characteristics, such as colors or textures.
Spectral Signatures: Understanding the spectral responses of various substances is crucial when interpreting remote sensing images.
Multispectral and Hyperspectral Remote Sensing: Learning how multispectral and hyperspectral sensors provide detailed information on Earth's surface is essential.
Radar Remote Sensing: Radar systems use microwaves to provide valuable terrain, land cover, and surface information.
Geographic Information Systems (GIS): The combination of remote sensing data with GIS data enables the mapping of Earth's surface.
Microwave Remote Sensing: The use of microwave imagery for crop analysis, soil moisture estimation, and forest analysis is an interesting and useful aspect of Earth observation.
Applications of Remote Sensing: Ranging from agriculture and forestry to meteorology and oceanography, understanding the numerous applications of Earth observation is vital.
Space Law and Policy: The laws and policies governing space activities, including the militarization and weaponization of outer space, the use of satellites for communication, and Earth observation are imperative to understand.
Social and Ethical Issues: Understanding the socio-economic and political implications of Earth observation, including privacy implications, is essential.
Future Developments: The ever-changing field of remote sensing, including new sensors and approaches, is an important area to monitor.
Optical (Visible) Imaging: This is the most common type of remote sensing technique used to capture the visible light reflected from Earth's surface.
Microwave Imaging: Microwave sensors can penetrate through clouds and provide information on soil moisture, vegetation density, and surface roughness.
Infrared Imaging: Infrared sensors can detect the heat radiation emitted by the Earth's surface to provide information on temperature, humidity, and atmospheric composition.
LIDAR (Light Detection and Ranging): LIDAR sensors emit laser pulses that bounce back from the Earth's surface to provide information on topography, vegetation, and buildings.
SAR (Synthetic Aperture Radar): SAR sensors emit microwave pulses that bounce back from the Earth's surface to provide high-resolution images of the terrain and ocean.
Multi-spectral Imaging: By capturing light at different wavelengths, multi-spectral sensors can identify the chemical composition of the Earth's surface, such as chlorophyll content and mineralogy.
Hyperspectral Imaging: Similar to multi-spectral, hyperspectral sensors can capture information across hundreds of narrow bandwidths to identify unique spectral signatures of the Earth's surface.
Geodetic Measurements: These use techniques like GPS and Radar to measure the changes and movements of the Earth's surface and atmosphere.
Gravity Gradiometry: This technique measures the changes in gravity to identify variations in the density of the Earth's subsurface.
Magnetic Field Mapping: Satellites fitted with magnetometers can map the Earth's magnetic field to identify the changes and anomalies resulting from geology and human activity.
Radio Occultation: Radio waves transmitted by a satellite can be used to probe the Earth's atmosphere and provide information on temperature, humidity, and pressure.
Meteorological Data: Satellites can collect meteorological data, including temperature, humidity, pressure, and cloud cover, to improve weather forecasting.
Oceanic Data: Satellites can track ocean currents, sea-surface temperature, and sea level rise to understand changes in the ocean and the impact of climate change.
Land Cover Mapping: By monitoring changes in land cover over time, remote sensing techniques can identify deforestation, urbanization, and changes in agricultural practices.
Carbon Monitoring: Remote sensing technologies have been developed to quantify and monitor carbon fluxes between the biosphere and the atmosphere, helping countries to comply with carbon accounting protocols.
Disaster Response: Remote sensing data can support disaster response efforts by identifying areas affected by natural disasters such as earthquakes, hurricanes, and wildfires.
Urban Monitoring: Remote sensing data can be used to quantify urbanization and understand the spatial distribution of infrastructure and housing.
Air Quality Monitoring: Techniques such as LIDAR and Spectrometry can be used to monitor air quality by identifying the concentrations of pollutants in the atmosphere.
Cartography and Mapping: Remote sensing data can be used to generate high-resolution maps and digital elevation models to inform planning and development decisions.
Ecosystem Monitoring: Remote sensing data can be used to evaluate the health and productivity of ecosystems, such as forests, wetlands, and oceans, and inform conservation efforts.
- "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."