What is remote sensing science and technology?

Remote sensing science and technology is to extract effective information from photos and process and analyze it. The "photos" here may come from satellites orbiting the earth in space, or from low-altitude flexible and compact drones, or from fast or slow cars on the ground. All kinds of "tools" and "cameras" form an integrated remote sensing observation network, which provides solid information support for national defense security, disaster assessment and agricultural monitoring.

Starting from electromagnetic waves, this paper discusses the "affinity" of ground objects to different spectra; Based on algebraic geometry, we keep distant objects in three-dimensional point clouds; We stepped onto the Tiananmen Square parade square and built an information warfare square; We walked into the National Speed Skating Hall of the Winter Olympics to create "the fastest ice"; We sent the "morning star" made by students to the sky and wrote the romance of "I have a line of code in space"; We overlook Turkey after the earthquake in the dark and provide timely and accurate disaster assessment reports ... This is remote sensing, which can bring infinite possibilities.

Remote sensing science and technology specialty includes four directions: remote sensing information, photogrammetry, geographic information engineering and remote sensing instruments. Remote sensing information focuses on the extraction and application of remote sensing image information, and obtains features from qualitative to quantitative. Photogrammetry focuses on reconstructing a three-dimensional system and moving real life into a digital museum. Geographic information engineering focuses on building a geographic information analysis and service platform to provide information support for geographic needs; Remote sensing instruments focus on the research and development of satellites and sensors, and participate in the whole process of satellite from design to launch at close range.

The specialty of geographic national conditions monitoring focuses on the comprehensive application of navigation, remote sensing, geographic information science and other technologies to dynamically monitor, comprehensively analyze and scientifically evaluate resources, ecology, environment and economy, and provide data and technical support for government decision-making and national or regional development planning from the perspective of geospatial specialty.

The specialty of spatial information and digital technology is facing the urgent demand for cross-innovative talents in the national strategy of building a "digital China". Based on the world-class public remote sensing teaching and research platform, by strengthening practical teaching such as software design and development, information system construction, innovation and entrepreneurship training, we have cultivated a profound theoretical foundation of software engineering, spatial information technology and computer network technology, a certain management and economic knowledge base, and can use digital engineering technology to digitally process spatio-temporal information, thus realizing the industrial application of composite spatio-temporal information processing with network transmission, visual expression and intelligent decision-making.