On December 26, the 5-meter optical satellite 02 satellite (Resource 1 02E satellite) developed by the Fifth Academy of Aerospace Science and Technology Group was successfully launched at the Taiyuan Satellite Launch Center. Among them, the infrared camera and visible near-infrared camera developed by the 508 of the Fifth Academy are the main payloads of the satellite, which are mainly used for fine "perception" and "measurement" of the earth, and will play an important role in natural resources business and remote sensing data autonomy.
The "thermometer" of the earth - infrared cameras
Infrared cameras mainly image the natural scenery of the earth's surface and the thermal infrared spectrum of artificial buildings, especially factories, industrial mines, residential areas, etc., to obtain thermal infrared images with high spatial resolution and high temperature resolution. It is a "thermometer" that records the surface temperature, which can play a good monitoring role for urban heat islands, heat emissions, and high-energy industrial production.
Infrared cameras use special photosensitive devices, and use TDI imaging technology, that is, time delay integrated imaging technology, through multiple photosensitive cells to time-sharing imaging of the same object, without increasing the aperture and weight of the camera optical system, to achieve high-sensitivity imaging. In addition, since infrared camera imaging does not rely on sunlight, it can also be imaged at night, which greatly improves the efficiency of satellite use.
Earth's "measuring ruler" – a near-infrared camera is visible
Different features on Earth emit or radiate spectra of different wavelength bands. It can be seen that the near-infrared camera is to detect different object targets by collecting different spectral bands, which is the "measuring ruler" of the earth, and can work with the infrared camera to conduct a comprehensive survey of the earth. The focal surface is the "eye" of the camera, and the number of focal field segments determines the camera's ability to obtain the amount of information. The visible ni-infrared camera is a dual-channel focal surface camera, and the two focal channels of the camera are imaged by five-color and four-color detectors respectively, and finally up to 9 spectrum segments are imaged simultaneously. Due to the rich imaging spectrum, it can be seen that in addition to land survey, geological survey, mineral exploration and the investigation and monitoring of mine environment and geological disasters, the near-infrared camera can also take into account many fields such as agriculture, forestry and water conservancy, ecological environment, urban planning and construction, transportation and major national projects, and is a survey expert in the field of resource remote sensing. The Resource 1 02E satellite fully inherits the technical state of the Resource 1 02D satellite, which not only ensures the continuity of the panchromatic, multispectral and hyperspectral data services, but also increases the infrared observation capability, which will further meet the monitoring needs of natural resources in the new era.
Text/Guangzhou Daily Xinhuacheng Reporter: Xiao Huanhuan Correspondent: Mother Country New
Photo / Guangzhou Daily , New Flower City Reporter: Xiao Huanhuan Correspondent : Home Country New
Video/Guangzhou Daily Xinhuacheng Reporter: Xiao Huanhuan Correspondent: Home Country New
Guangzhou Daily New Flower City Editor: Cai Lingyue