Method and system for determining Mars landing site based on Martian dust devil yield rate
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A determination method and dust tornado technology, applied in the field of planetary remote sensing and planetary meteorology, can solve the problems of not combining the Mars rover, ignoring the cleaning effect of the solar panel of the Mars rover, and unable to obtain calculation results, so as to improve the calculation accuracy and The effect of accuracy
Active Publication Date: 2022-04-05
SHANDONG UNIV
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[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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Embodiment 1
[0053] This embodiment discloses a method for determining a Mars landing site based on the Martian dust devil yield rate, including the following steps:
[0054] Step 1, the selection of high-resolution remote sensing image pairs in the Mars landing area;
[0055] Step 2, newly generated dust devil trajectory identification in the Mars landing area;
[0056] Step 3, calculation of dust devil production rate in the landing area;
[0057] Step 4, evaluation of the cleaning cycle of the rover's solar panels.
[0058] In the specific implementation example, regarding step 1, the high-resolution remote sensing image pair selection of the Mars landing area;
[0059] After the Martian dust devil object is generated, it will move under the push of the local dominant wind. During the movement, it can raise dust on the surface of Mars, exposing the black material under the dust, forming a long and slightly curved dust devil track. Therefore, although it is difficult to directly captu...
Embodiment 2
[0097] The purpose of this embodiment is to provide a computing device, which includes a memory, a processor, and a computer program stored in the memory and operable on the processor, and the processor implements the steps of the above method when executing the program.
Embodiment 3
[0099] The purpose of this embodiment is to provide a computer-readable storage medium.
[0100] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps of the above-mentioned method are executed.
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Abstract
This disclosure proposes a method and system for determining a Mars landing site based on the yield rate of Martian dust devils, including: acquiring high-resolution Mars remote sensing time-series image pairs in the same area at different times; identifying the acquired Mars remote sensing time-series image pairs to obtain Mars landing newly generated dust devil trajectory in the area; based on the above trajectory, obtain the overlapping area of the Mars landing area, the observation time interval, and the number of newly generated dust devil objects observed in the image pair to calculate the dust devil yield rate; calculate the landing area image Centering, the coverage area of the dust devil object track newly generated in each Martian day, and then calculate the number of Martian days required to cover the entire landing area area on the basis of the newly generated dust devil track area in each Martian day, namely Mars rover solar panel cleaning cycle; determine the Mars landing site based on the dust devil production rate and the Mars rover solar panel cleaning cycle. Select the landing and inspection area with the optimal cleaning cycle for the subsequent Mars rover inspection mission after a 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...
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