What is the difference between GIS and RS?

The difference between GIS and remote sensing;

1. Different disciplines:

GIS is a new frontier subject which combines geography, surveying, cartography, remote sensing and computer science. Among these related disciplines and technologies, surveying and remote sensing mainly serve GIS from the perspective of data sources, while geography and cartography are the main fields of GIS application.

2. Different technologies:

Due to the combination of remote sensing technology and computer technology, remote sensing mapping has changed from visual interpretation to computerization, which provides technical support for map updating and studying the changes of environmental factors with time.

3. Different applications:

RS mainly obtains the image information of ground objects, and GPS obtains the specific location information of ground objects. GIS processes the above information and information from other channels.

4. Different characteristics:

In terms of natural disasters, rs mainly obtains image information, which is fast, efficient and real-time. However, GIS needs to process and analyze the data to monitor and predict, so the process is relatively long, slow, inefficient, but with high accuracy.

5. Comprehensive differences:

Remote sensing uses remote sensors to detect the characteristics of ground objects from the air. According to the principle that different objects have different responses to the spectrum, it is of great significance to recognize various ground objects on the ground. That is to say, remote sensors on flying objects such as airplanes, spaceships and satellites above the ground are used to collect ground data and obtain information from them, and ground objects can be identified through recording, transmission, analysis and interpretation.

From the perspective of technology and application, GIS is a tool, method and technology to solve spatial problems. From the disciplinary point of view, GIS is a discipline developed on the basis of geography, cartography, surveying and computer science, with an independent disciplinary system; Functionally, GIS has the functions of spatial data acquisition, storage, expression, editing, processing, analysis, output and application. From the perspective of systematics, GIS has a certain structure and function, and is a complete system. ?

Reference 1. Baidu encyclopedia -RS

References 2. Baidu Encyclopedia-Geographic Information System