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Original title: Chang’e 4 completed his 24-month work day Chang’e 5 is about to embark on a trip to the moon
China News Service, Wenchang, Nov. 23 (Guo Chaokai) A reporter learned from the Lunar Space Engineering and Exploration Center of the China National Space Administration on the 23rd that the Chang’e 4 lander completed its working day 24 and entered the night sleep of the moon; the Chang’e 5 probe was ready to go. It is about to embark on a trip to the moon.
The Chang’e 4 lander and the “Yutu 2” lunar rover completed on the 24th of the month at 12 o’clock and on November 22 at 3:10, respectively, and entered the lunar night slumber. Since the 23rd, Chang’e-4 has been working on the back of the moon for 690 Earth days, with a cumulative mileage of 589.6 meters.
According to the images joined by the panoramic camera of the 23rd of the month and day, the DOM images and other data, the lunar rover “Yutu-2” continued to move towards the direction of the basalt and the high reflectivity impact crater area during on the 24th. Northwest.
The infrared imaging spectrometer mounted on the lunar rover “Yutu-2” obtained the spectroscopic and mineralogical characteristics of the lunar soil and the lunar rock on the inspection route, in order to reveal the material composition of the landing zone, especially the Largest Impact Basin on the Moon-South Pole- The deep composition of lunar material contained in the Aitken Basin provides important support. The scientific results were published in the international journal “Remote Sensing”.
The Shandong University planetary science team, together with research teams from the Shanghai Institute of Technology, the Geochemistry Institute and the China Academy of Sciences Space Center, used the Chang’e-infrared imaging spectrometer. 4 to detect the spectrum data instead, combined with the data from the laboratory’s photometric experiment, and obtained the near infrared and visible bands from the infrared spectrometer. The phase function of the Lommel-Seeliger model in the range of (450-2395nm) has established a set of luminosity models in which the radiation from the lunar surface varies with the angle of incidence, the angle of departure and the angle solar phase.
The study looked at the spectral “recoil” effect and “redshift” effect of the lunar soil in situ at the back of the moon, and it was found that the shadowing caused by the micro-roughness of the lunar soil has a prominent impact on spectral radiance, and proposed an infrared imaging spectrometer data set Shading correction method. The photometric model was used to normalize the detection spectrum data, revealing that the spectrum of the same target after calibration showed better consistency. The mineral composition of the lunar soil in the Chang’e 4 landing zone after Yutu 2 was found to walk 448 m on the lunar surface still relatively uniform.
On the far side of the Moon, Chang’e 4 completed his moon day 24 and went into moonlight slumber; in China’s Wenchang Space Launch Site, Chang’e 5 has already been featured in the launch tower, and a “new couple” is about to usher in the moon. Several systems are currently undergoing various tests and other final preparations, and the mission has entered the launch implementation phase and Chang’e 5 is about to embark on a trip to the moon.
Different from the first and second phases of the lunar exploration project, the Chang’e-5 mission of the third phase of the lunar exploration project has a “two-way ticket”, which will realize China’s first automatic sampling and the return of the extraterrestrial celestial bodies, and complete the lunar exploration project “all, the fall, and the return.” “The three-step strategic planning has laid a solid foundation for follow-up work. (Finish)
