You can see the satellite map of people.

Generally, satellites in synchronous orbit can't see human activities.

When the special high-resolution spy satellite with elliptical orbit is close to the earth, the images taken at a height of several tens of kilometers are transmitted to the ground station, and analyzed by a large computer, so that the state and position of the human body can be seen.

Extended data

image resolution ratio

1, which can be commonly understood as a photo taken by a satellite in space-for example, in Google Earth, 98% of the world's images are satellite photos (note: many foreign countries are aerial photos, that is, aerial photos). There are two resolutions: the low-resolution satellite map of field 15m and the high-resolution satellite map of city 0.6m.

2. The high-definition satellite maps in Google Earth we usually refer to the high-resolution satellite maps provided for Google Earth by companies such as DigitalGlobe, GEOEYES (now acquired by DigitalGlobe) and SPOT, such as 0.6m resolution, 1m resolution, 2.5m resolution, 4m resolution image and 10m resolution image.

3. The practice of aerial photogrammetry can be used as a reference for the reference and analysis of satellite images and the selection of drawing scale. This is because their mapping principles are similar, and aerial photogrammetry has a lot of practical experience and experimental data, which is very mature.

4. There is no direct requirement for image resolution in aerial photogrammetry, but it can be inferred from the requirement for objective resolution of camera and photographic scale. The resolution of camera lens in aerial photography indicates the minimum line width that can be resolved on the image after aerial photography (the resolution of film and image paper is not considered here).

5. According to the Specification for Aerial Photography (GB/T15661-1995), the lens resolution in the effective use area of aerial cameras is "no less than 25 line pairs per millimeter". According to the objective resolution and photographic scale, the corresponding ground resolution d on aerial photographic images can be estimated, that is, d = m/r (where m is the denominator of photographic scale and r is the lens resolution. )

References:

Baidu encyclopedia-satellite map