China News Service, Wenchang, November 23 (Guo Chaokai) A reporter learned from the China National Space Administration's Lunar Exploration and Space Engineering Center on the 23rd that the Chang'e 4 lander completed its 24th day of work and entered moon night sleep; the Chang'e 5 probe was ready to go , Is about to embark on a journey to the moon.
The Chang'e 4 lander and the "Yutu 2" lunar rover completed the 24th day of the month at 12 o'clock and 3:10 on November 22, and entered the moon night dormancy.
As of 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.
Based on the 23rd month and day panoramic camera stitched images, DOM images and other data, the "Yutu 2" lunar rover continued to move towards the basalt direction and the high reflectivity impact crater area during the 24th day. Both locations are located Northwest.
The infrared imaging spectrometer mounted on the "Yutu-2" lunar rover obtained the spectroscopic and mineralogical characteristics of the lunar soil and 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 lunar material composition contained in the Aitken Basin provides important support.
The scientific results were published in the international journal "Remote Sensing".
The planetary science team of Shandong University, together with the research teams of the Shanghai Institute of Technology, the Institute of Geochemistry and Space Center of the Chinese Academy of Sciences, used the Chang'e-4 infrared imaging spectrometer to detect the spectrum data in place, combined with the laboratory photometric experiment data, and obtained the infrared spectrometer's visible and near infrared bands The phase function of the Lommel-Seeliger model in the range of (450-2395nm) has established a set of luminosity models in which the lunar surface radiance varies with the incident angle, exit angle and solar phase angle.
The study observed the spectral "recoil" effect and "redshift" effect of the lunar soil in situ on the back of the moon, and found that the shadow caused by the micro-roughness of the lunar soil has a prominent impact on the spectral radiance, and proposed an infrared imaging spectrometer data 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. It was found that the mineral composition of the lunar soil in the landing area of Chang'e 4 after Yutu 2 walked 448 m on the lunar surface Still relatively uniform.
On the far side of the moon, Chang'e 4 completed its 24th day of the moon and entered moon night dormancy; at China's Wenchang Space Launch Site, Chang'e 5 has already stood on the launch tower, and a "new partner" will soon be ushered on the moon.
At present, various systems are 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 journey 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 return of extraterrestrial objects, and complete the lunar exploration project "circle, drop, and return." "Three-step strategic planning has laid a solid foundation for follow-up tasks. (Finish)