Viễn thám được định nghĩa như một khoa học công nghệ mà nhờ nó các tính chất của vật thể quan sát được xác định, đo đạc hoặc phân tích mà không cần tiếp xúc trực tiếp với chúng.

In recent times, remote sensing has become a significant component in policymaking for sustainable development in the agricultural and forestry sectors to establish big data schemes. Big data refers to the volume, variety, velocity, and veracity of data at large scales.

Geoinformation is a field that greatly benefits from the technological advances in remote sensing. The numerous advantages of using remote sensing in geoinformation are demonstrated by the large number of application-oriented endeavors already undertaken. Depending on the need (i.e., scientific, societal, mapping, planning, hazard mitigation, etc.), emphasis may be placed on different facets of geoinformation.

The Landsat 8 (L8) Data Users Handbook is prepared by the U.S. Geological Survey (USGS) Landsat Project Science Office at the Earth Resources Observation and Science (EROS) Center in Sioux Falls, SD, and the National Aeronautics and Space Administration (NASA) Landsat Project Science Office at NASA's Goddard Space Flight Center (GSFC) in Greenbelt, Maryland.

The twenty-first century is the first “urban century” according to the United Nations Development Program. Although urbanized land currently covers only approximately 2% of global land area, more than half of the world’s population live in the urban environment.

People see remote sensing data every day without realizing it, as it’s included in news programs and weather forecasts, and some regularly use it with software packages such as Google Earth. Many people don’t realize they’re looking at satellite data, and even fewer realize that these data are often freely available and accessible to anyone.

Remote sensing observations in conjunction with measurements and modeling constitute a discipline that makes it possible to understand the functional properties of the observed system and their dependence on its structural properties.

This SENTINEL-2 Mission Guide provides a high-level description of the mission objectives, satellite description and ground segment. It also addresses the related heritage missions, thematic areas and Copernicus services, orbit characteristics and coverage, instrument payload, and data products.

Land cover describes both natural and man-made coverings of the Earth’s surface, including biota, soil, topography, surface and groundwater, and human structures. A related concept is land use, referring to the manner in which the biophysical attributes of the land are manipulated and the purpose for which the land is used.

Land-cover and land-cover changes (LCC) affect the moisture and temperature states as well as the composition of the atmospheric boundary layer (ABL). The often-unpleasant conditions in cities in summer are one of the most obvious examples of how land-use, that is the realization of the actual land-cover affects local weather and climate and, indirectly, air quality.

Environmental remote sensing is the measurement, from a distance, of the spectral features of the Earth’s surface and atmosphere. These measurements are normally made by instruments carried by satellites or aircraft, and are used to infer the nature and characteristics of the land or sea surface, or of the atmosphere, at the time of observation.

Remote sensing refers to the technology of acquiring information about the Earth’s surface (land and ocean) and atmosphere using sensors onboard airborne (aircraft, balloons) or spaceborne (satellites, space shuttles) platforms.

Remote sensing provides exellent methods towards identify the spatial distribution and extent of habitats and landscapes at a Pan-European scale.

Field survey with global positioning system (GPS), although expensive and time-consuming, can provide reliable information on impervious surfaces. Manual digitizing from hardcopy maps or remote sensing imagery (especially aerial photographs) has also been used for mapping imperviousness.

This book was conceived as a contribution to the increasingly urgent need in the scientific and resource management communities to develop greater understanding of forest disturbance as a means to aid in the resolution of complex forest management planning issues worldwide. It is our view that, in the past decade, the capability to use remotely sensed data for the generation of forest disturbance products is increasingly well understood and, consequently, more widely available.

Through this document, a number of applied researchers share their expertise in the use of remote sensing for monitoring indicators relevant to biodiversity. Using examples and simplified technical language they explain what is currently feasible with remote sensing and approximately at what cost.

This fourth edition has been developed to reflect the changes that have occurred in techniques for the analysis of digital image data in remote sensing over the past five years or so. Its focus is on those procedures that seem now to have become part of the set of tools regularly used to perform thematic mapping.

Over the years, Remote Sensing has proven to be a valuable tool for identifying objects at the earth’s surface and for measuring and monitoring important biophysical characteristics and human activities on the terrain. Since the early days of earth observation, numerical methods of spectral analysis have been used to extract information from these digital images.

Remote sensing has been defined as the detection, recognition, or evaluation of objects by means of distant sensing or recording devices. In recent decades, remote sensing technology has emerged to support data collection and analysis methods of potential interest and importance in forest management.

For forest biodiversity assessment in Alberta, the scale of the element being targeted will determine whether data are best collected through field sampling or remote sensing. Genetic, population, and assemblage/community level diversity assessments will require terrestrial and aquatic field measurements.

Cùng với những thành tựu của loài người trong việc chinh phục vũ trụ thì trắc địa ảnh và viễn thám đã và đang được phát triển mạnh mẽ, trở thành một phương pháp rất có hiệu quả, được áp dụng trong nhiều lĩnh vực nghiên cứu tài nguyên, môi trường, quản lý và tổ chức lãnh thổ.