What do photogrammetry and remote sensing science and technology do?

Photogrammetry and remote sensing belong to the category of geospatial information science. It is a science and technology that uses sensors such as non-contact imaging to obtain reliable information of the earth's surface and environment, other targets or processes, and record, measure, analyze and express them. Based on the principle of combining theory with practice teaching, this major is characterized by cultivating professionals with a solid theoretical foundation of radiation spectrum, imaging geometry and image information, and the ability to process, analyze and interpret aerial and satellite image data, so as to meet the growing demand for photogrammetry and remote sensing technology in many fields (including civil engineering investigation, land and resources investigation, natural disaster and environmental monitoring, regional sustainable development planning, etc.). ).

(A) the main research direction

1, digital photogrammetry

Taking aerial images and satellite high-resolution images as data sources, this paper expands the theory and algorithm of computer stereo correlation, develops a new method to determine and refine the stereo geometric model, and studies the new technology of digital stereo mapping in difficult areas. A new fast calibration algorithm of digital camera in close-range photogrammetry, the accurate matching of digital images, and the problems in automatic monitoring of industrial production process and deformation monitoring of civil engineering buildings (such as bridges and tunnels) are studied.

2. Remote sensing technology and its application

Based on multi-spectral, multi-resolution and multi-temporal satellite images, a new remote sensing method for land surface change and geological survey is studied. To study effective methods to detect changes in earth resources (such as land use) and develop semi-automatic or full-automatic remote sensing monitoring means; Develop practical remote sensing systems to monitor urban environmental pollution and natural disasters (such as floods, forests, crop diseases and insect pests) and so on. Based on synthetic aperture radar images, three-dimensional surface reconstruction, large-scale precise surface deformation detection (including landslide, urban subsidence and crustal deformation) and interferometric radar (InSAR) meteorological change monitoring are carried out.

3, 3S technology and its application

The method and algorithm of vehicle-mounted CCD sequence image mapping are studied, which provides a fast and effective means of ground remote sensing measurement for linear engineering survey. This paper studies the mode and method of 3S technology integration, including remote sensing (RS), global positioning system (GPS) and geographic information system (GIS), and explores a brand-new survey and design method for western railway and highway construction.

(2) Employment field

The main fields of employment are: railway and highway survey and design departments, engaged in line engineering survey, obtaining basic digital spatial information and making digital basic maps; Surveying and mapping and urban survey and design departments, engaged in land and resources utilization survey, land use change monitoring and land use planning decision support; Environmental protection, natural disaster prevention and earthquake research departments, engaged in environmental remote sensing monitoring and related scientific research; Institutions of higher learning and scientific research are engaged in teaching and scientific research of related majors.

(3) Major related disciplines

Earth science, surveying and mapping science, geographical science, environmental science, image processing science, computer science, etc.