High spatial resolution is a relative concept, and standards will continue to change with the development of technology. For example, now, meter-level (sub-meter-level) remote sensing data can become high spatial resolution data. In the future, it may be possible to obtain centimeter-level data with high spatial resolution.

The first characteristic of high spatial resolution is high resolution and strong ability to distinguish ground objects; secondly, the amount of data is large and the coverage area of ??a single image is small; and although the resolution Improved, it can more intuitively reflect the actual surface conditions, but classification and extraction becomes more difficult. Of course there are others, you can check the relevant literature.

Currently, there are many high-resolution satellites at home and abroad, and we can list a few, such as the commonly used quickbird, the domestic CMB (2.36 meters), etc.