What are the basic data of Salute 4 Space Station?

The activities related to remote sensing of earth resources in the space station mainly include: Salute No.4 ~ No.5, orbital height of 245km, and inclination angle of 5 1.6. The space camera equipped with Kate- 140 has a focal length of 144 mm and a picture frame of 18 18 cm ~ 2, covering 450450 km ~ 2 and a ground resolution of 30 meters. It uses black-and-white panchromatic, color and two-layer color infrared films, and obtains an area of 22,000 from the Kuril Islands in the east and Central Asia in the west.

Salute No.6 ~ No.7, with track height of 260 km and inclination angle of 65. Carrying MKF-6 multispectral camera, focal length 125mm, picture frame 558 1mm2, covering the ground114.4168.5km2, using 0.45 ~ 0.52, 0.52 ~ 0.62. The ground resolution is in the visible band 16 ~ 22 meters, and the near infrared band is 40 ~ 48 meters. Salute No.6 only acquired more than 50,000 space remote sensing photos from September 1977 to September1981,covering an area of 48.6 million square kilometers.

1978, Salute No.6 began to cross-photograph the ground with Kate- 140 space camera to obtain stereo images for stereo mapping. A new generation of space station "Mir" was launched on February 20th 1986, with six docking ports, which opened a new stage of manned space flight from investigation and test to extensive production activities.