Interpretation of remote sensing terms

Remote sensing refers to non-contact and long-distance detection technology. Generally, it refers to the detection of electromagnetic radiation and reflection characteristics of objects by sensors/remote sensors. Remote sensing is to detect the target object by remote sensors and other instruments sensitive to electromagnetic waves under the condition of being far away from the target and not touching the target object.

It is a science and technology to obtain reflected, radiated or scattered electromagnetic wave information (such as electric field, magnetic field, electromagnetic wave, seismic wave, etc.). ) and extraction, judgment, processing, analysis and application.

Literally, remote sensing can be simply understood as remote sensing, which generally refers to all non-contact remote detection; From the perspective of modern technology, "remote sensing" is an applied detection instrument. Using spacecraft and modern electronic and optical instruments to detect and identify distant research objects.

Remote sensing is a new technology that combines the remote sensing of the earth's surface with the monitoring of resource management (such as the management of trees, grasslands, soil, water, minerals, crops, fish and wildlife) through remote sensing instruments on artificial earth satellites, aviation and other platforms.

Remote sensing refers to all non-contact long-distance detection technologies. Using modern means of transportation and sensors, the electromagnetic wave characteristics of the target object are obtained from a long distance, and its functions (timing, positioning, qualitative and quantitative) are finally realized through the transmission, storage, satellite correction and identification of the target object.

Broadly defined: Remote sensing refers to all non-contact remote detection, including the detection of electromagnetic fields, force fields and mechanical waves (acoustic waves and seismic waves). Remote sensing in natural phenomena: bats, rattlesnakes, human eyes and ears …

Narrow definition: it is a comprehensive detection technology that records the electromagnetic wave characteristics of the target from a distance by using detection instruments without touching the target, and reveals the characteristics and changes of the object through analysis.