Types and characteristics of commonly used remote sensing images?

1. Color infrared aerial photos.

Color infrared aerial photography is the most commonly used information for urban remote sensing. This type of photo filters out the blue light in visible light and enhances near-infrared rays during photography. Because the color and color of ground objects after imaging are Human eyes directly observe the difference (for example, vegetation is red), so it is also called false color (or false color) aerial photos.

This kind of photo has higher color saturation, stronger contrast and better definition than ordinary visible light (true color or black and white) aerial photos. It especially has high resolving power for vegetation and water bodies.

2.Microwave radar image.

Microwaves can penetrate clouds and can distinguish the water content of ground objects, plant growth, flood extent, etc.

3.MSS and TM images.

MSS and TM images are provided by the US Landsat.

4.SPOT5 image.

It is equipped with two high-resolution geometric devices and is characterized by excellent on-board storage capabilities that optimize data storage, recording, playback, etc.

5. Meteorological satellite images.

At present, the most commonly used images are the weather satellites launched by China and the United States Weather Satellite (NOAA). Meteorological satellites can scan the same location several times a day and can be used to observe changes in urban heat islands.

6. High spatial resolution satellite images

With the development of remote sensing technology, high spatial resolution satellite images have gradually been widely used, providing urban monitoring at a lower cost. More detailed information.

7. Impact of hyperspectral remote sensing satellites

Hyperspectral remote sensing is the abbreviation of high spectral resolution remote sensing, which is in the visible, near-infrared, mid-infrared and thermal infrared bands of the electromagnetic spectrum. Within this technology, many very narrow spectrally continuous image data are acquired.

8. LiDAR data

Lidar (LiDAR) is an observation technology that directly obtains the three-dimensional coordinates of surface points on an object through observation data such as position, distance, angle, etc.

9. China-Brazil Earth Resources Satellite and Beijing-1 Small Satellite

China-Brazil Earth Satellite refers to the CBERS-1 and CBERS-2 satellites cooperated by China and Brazil. Beijing-1 is a small Earth observation satellite with medium and high resolution dual remote sensors.

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