Mars landing point determination method and system based on Mars dust entrapment wind yield

Abstract

The invention provides a Mars landing point determination method and system based on Mars dust wind yield. The method comprises the following steps: acquiring high-resolution Mars remote sensing time sequence image pairs at different times in the same region; identifying the obtained Mars remote sensing time sequence image pair to obtain a newly-generated dust entrainment wind track in the Mars landing area; calculating the dust entrainment wind yield according to the area of the overlapping range of the Mars landing area, the observation time interval and the number of newly-generated dust entrainment wind objects observed in the image pair obtained on the basis of the trajectory; calculating the coverage area of the newly generated dust entrainment object trajectory of each Mars day in the landing area image pair, and then calculating the number of Mars day days required for covering the whole landing area range on the basis of the area of the newly generated dust entrainment object trajectory of each Mars day, namely the cleaning period of the solar panel of the Mars rover; and determining the Mars landing point is determined based on the dust entrainment wind yield and the Mars over solar panel cleaning period. A landing and patrolling area with the optimal cleaning period is selected for a follow-up Mars rover patrolling task after successful Mars landing.

Description

technical field [0001] The disclosure belongs to the technical field of planetary remote sensing and planetary meteorology, and in particular relates to a method and system for determining a Mars landing site based on the yield rate of Martian dust devils. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Mars is the closest planet in the solar system to Earth. If there is extraterrestrial life in the solar system, then Mars is the most likely. Remote sensing and on-site detection of Mars have a profound impact on the search for water sources and traces of life, and carrying out Mars exploration missions is of great strategic significance. [0004] Because Mars is farther from the sun, less solar radiation is available, which limits the power generation capacity of the rover's solar panels. In addition, the climate on Mars is dry and dus...

AI Technical Summary

Problems solved by technology

[0007] (1) When evaluating existing technologies and selecting a Mars landing area, only factors such as meteorology (dust storm) and morphology (fluctuation, latitude, rock abundance, and roughness) are considered, and the impact of dust devil objects in the landing area on the Mars rover’s solar energy is ignored. The cleaning effect of the sailboard is of great significance to prolonging the life of the Mars rover patrol mission

[0008] (2) The existing technology mostly uses remote sensing images to identify and calculate the yield of dust devil objects in the Mars landing area, and does not combine the results of the in-place observation of the Mars rover

[0009] (3) Existing technologies mostly use a single image of the landing area to study the shape, distribution, and yield of dust devil trajectories. Since the trajectories left by dust devils will be replaced by dust storms, winds, and frost over time. and other atmospheric activities, therefore, the analysis based on a single image cannot obtain accurate calculation results

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