What is Remote Sensing?
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Remote sensing is the science and art of acquiring information about objects, areas, or phenomena without direct contact, utilizing sensors on various platforms like aircraft, satellites, and drones . It involves capturing emitted or reflected radiation to gather data about the Earth's surface, oceans, and atmosphere . Remote sensing methods can be passive, relying on naturally occurring radiation, or active, where instruments emit radiation for data collection . This technology has become a crucial tool in environmental monitoring, geology, and landscape ecology, aiding in tasks such as mapping, monitoring, and decision-making processes . By understanding the physical and technical basics of remote sensing, researchers can extract valuable information from the data acquired, contributing to a better comprehension of landscapes and environmental changes over time .
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| Papers (5) | Insight |
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| Remote sensing is the science of collecting spatial data about Earth's surface from a distance using sensors on handheld devices, aircraft, or satellites, crucial for mapping and monitoring landscapes. | |
| Remote sensing is obtaining information about objects from a distance using emitted or reflected radiation captured by sensors on satellites, airplanes, or ground-based systems, without direct contact with the target. | |
| Remote sensing is the science and art of gathering information about objects or areas without physical contact, using devices like cameras or scanners on platforms such as aircraft or satellites. | |
| Remote sensing is a method using various sensors and platforms to collect geoinformation for environmental and social investigations, overcoming data limitations and processing delays. | |
| Remote sensing is the science of gathering information about objects or areas without physical contact, using data analysis from devices. It aids in decision-making by producing images and extracting data efficiently. |
Related Questions
What is the definition of Remote sensing?10 answersRemote sensing is defined as the process of acquiring information about objects or phenomena without making physical contact with them. This technology is pivotal for understanding the Earth and facilitating human-Earth communications, as it allows for the observation and analysis of various environmental and man-made features from a distance. Traditionally, remote sensing has been associated with the use of earth observation satellites, focusing on capturing data from afar, which underscores its significance in monitoring and studying the planet.
The application of remote sensing extends beyond terrestrial observations, playing a crucial role in oceanography by providing valuable data about the ocean's surface through satellites or aircraft. In the field of agriculture and entomology, remote sensing technologies enable the nondestructive monitoring of crops and insects, facilitating optimized management practices and contributing to research in insect behavior and physiology. The development of digital twin basins, which are virtual representations of physical basins, exemplifies the integration of remote sensing data for environmental management, including drought monitoring and water resources management.
Advancements in remote sensing technologies, such as the use of Orbital Angular Momentum (OAM) for object pattern recognition and wavefront sensing, demonstrate the potential for innovative applications in sensing tasks. Despite challenges, such as data susceptibility to atmospheric particles, efforts in dehazing and algorithm development continue to improve the quality and utility of remote sensing data. Furthermore, remote sensing tools and techniques are increasingly applied in land administration, offering rapid, cost-effective solutions for land data creation, analysis, and maintenance, thereby addressing contemporary societal challenges.
In summary, remote sensing is a multifaceted technology that enables the collection of critical information about the Earth and its components from a distance, with wide-ranging applications from environmental monitoring to land administration.
What is remote sensing and used for?5 answersRemote sensing is a powerful tool used to study the interactions between the atmosphere and living organisms, particularly plants. It involves using sensors on satellites or aircraft to collect and process electromagnetic wave information from distant targets, allowing for the detection and identification of various scenes on the ground. Remote sensing is used in biometeorology to estimate plant growth, productivity, and water use efficiency, as well as monitor environmental conditions such as drought, heat stress, and air pollution. In agriculture, it is used for evaluating plant health, yield estimation, irrigation management, weed and pest detection, and weather forecasting. It is also used in monitoring soil conditions, water resources, and geological features. Remote sensing technology enables the measurement of land and sea surface color and temperature, as well as the monitoring of agricultural products and water resources. It has applications in various sectors such as agriculture, forestry, and ocean management.
What is remote monitoring system?5 answersA remote monitoring system is a healthcare tool that allows physicians to monitor patients from a distance and provide timely treatment. It involves the use of sensors, gadgets, and environmental devices to collect and exchange the patient's vital data in real time. The system consists of data collection devices that gather information about the operation conditions and contents of equipment instruments, and a data aggregation device that receives and aggregates the collected data. The system also includes a data acquisition terminal and a data monitoring center connected through a cloud server, enabling information exchange and remote control of instruments and equipment at monitoring points. Additionally, a remote intelligent monitoring system utilizes a control bus to connect various components such as a central processing system, network concentrator, monitoring controller, remote control terminal, power supply system, and multimedia system, improving monitoring efficiency and ensuring uninterrupted operation. Another remote monitoring system uses an electronic fence and a management module to receive and identify environment data, sending only the data outside the range of predefined environmental parameters to an external device.
What is SAR in remote sensing?5 answersSynthetic Aperture Radar (SAR) is a remote sensing technology used for Earth Observation (EO). It is a coherent active imaging technique where an electromagnetic wave is emitted by a spaceborne sensor and its backscattered signal is captured. SAR images contain amplitude information, which reflects the ground properties, and a phase component, which is related to the distance from the sensor to the ground target. SAR has several differences compared to optical remote sensing, such as acquisition geometry, wavelengths, spatial resolution, and polarization. The phase information in SAR images can be exploited for applications like DEM generation and surface displacements retrieval. SAR is used for various applications including monitoring areas prone to hydrogeological risk, agricultural crop monitoring, forest biomass estimation, glacier monitoring, urban mapping, sea surface object detection, and deformation mapping. SAR remote sensing is an evolving field with increasing satellite constellations and advancements in deep learning applications.
What is remote sensing?5 answersRemote sensing is the science and art of obtaining information about an object, area, or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under investigation. It involves the use of sensors to record electromagnetic radiation from the Earth's surface. This recorded data is then processed and analyzed using visual and digital image processing techniques. Remote sensing can be passive, where naturally occurring radiation is recorded, or active, where sensors supply their own energy to illuminate the scene. It can be conducted using various platforms such as aircraft or satellites. Remote sensing plays a crucial role in landscape ecology, allowing for the mapping, monitoring, and management of landscapes. It is a complex field that requires an understanding of the different types of electromagnetic radiation, the properties of materials, and the characteristics of sensor systems.
What are the amonnia measurments remote sensing?3 answersRemote sensing techniques have been used to measure various properties, including ammonia. The ONSala Atmospheric Measurement program in 1983 tested remote sensing equipment, including a temperature profiling radiometer and a water vapor radiometer, to measure ammonia levels. Additionally, the use of an optical remote sensing system with emission and collection fiber channels has been proposed for remote sensing applications, which could potentially be used to measure ammonia levels in different scenes. While the specific measurement of ammonia using remote sensing is not mentioned in the other abstracts, remote sensing techniques, such as spectral analysis and long wave infrared polarimetric imagery, are commonly used in remote sensing science, which could potentially be applied to measure ammonia levels. Further research and development in remote sensing science may provide more specific methods for ammonia measurements.