Tianwen successfully obtained China's first "Fire 1" image to reveal the details of the "potato" shooting from Mars

Xinhua News Agency, Shanghai, July 23 (Reporter Zhang Jiansong) On July 23, on the occasion of the second anniversary of the successful launch of Tianwen No. 1 Mars probe, the Tianwen No. 1 Mars width developed by the Eighth Hospital of China Aerospace Science and Technology Group The first "Fire 1" images shot in China were officially released.

The image was taken by the high -resolution camera carried by Tianwen No. 1 Mars surrounder. In the image, the fire guard looks like a "potato", and the surface is covered with a large and small meteorite pit with different shapes. The shape is complete and the details are clear. Provided precious data for scientists to carry out research on a terrain and landforms and operating laws, and accumulated valuable experience for my country's planet detection projects.

How is this precious image taken? According to Zhu Qinghua, deputy chief designer of the Eighth Hospital of China Aerospace Science and Technology Group, Mars has two natural satellites. The first of fire is one of the largest heads, about 27 kilometers long, 22 kilometers wide, 18 kilometers high. It is irregular and no atmosphere. A satellite closest to the main star.

After studying and analyzing the flight track of the Mars No. 1 Martian widow and the fire orbit of the Eighth Hospital, the Eighth Hospital found that the Mars wander had many opportunities to fly over the fire. Combined with the ability of surrounding device imaging science loads, the team can use high -resolution cameras to implement imaging detection after the feasibility assessment. However, due to the constraints of the resolution of the optical imaging system and the "photographer" view, the requirements of the Martian widget attitude point to the control ability have high accuracy and stability requirements. Essence

In order to ensure the success of the shooting, the team members performed a multi -party comparison and confirmation one by one. At 5,100 kilometers away from Huowei, Tianwen No. 1 Mars wrap opened the shooting of this "universe blockbuster".

"Because the Martian surrounder and the fire guard are in the process of fast flight, shooting when the two meet, it is equivalent to taking a camera with a camera while taking a picture of another high -speed movement object, and the camera's visual view The field is still very small. It is only about 6 seconds from the field of fire to the field to fly out of the field of view. Therefore, it is accurate, stable, controlled, and shot well. "Zhu Qinghua said.

During the shooting process, the Mars surrounder first carried out a posture of the posture to accurately aim the high -resolution camera light shaft in the target area, waiting for the fire to fly over. At the expected flying time, the Mars surrounder uses high -resolution cameras to implement continuous photos. After the shooting, the Mars surrounder has adjusted the posture to return to the cruise flight attitude. At the same time, the imaging data is transmitted to the ground through the directional antenna to the ground for processing. And this series of operations are all completed by the Mars wrap.

Since the successful launch on July 23, 2020, Tianwen No. 1 Mars wander has successfully completed various tasks. At present, Tianwen No. 1 Mars surrounding device runs on the remote sensing track track, running stable and good in state. Follow -up will continue to carry out global remote sensing detection, and will choose to conduct an expansion technical test to conduct preliminary technical verification for related tasks.

Reporter: Zhang Jiansong

Final trial: Lingwei's family

Produced by Zhang Jiansong Studio, Xinhua News Agency New Media Center

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