Topography Modeling, Mapping and Analysis of China’s First Mars Mission Tianwen-1 Landing Area from Remote Sensing Images

Abstract

By using multi-source remote sensing image data from Mars Orbiters, the technical framework for Martian surface topography fine 3D modeling and automatic classification was developed. The high-resolution terrain of Tianwen-1 landing area was made by combining the photogrammetry and the Shape-from-Shading (SFS) methods, and high-resolution images were used to classify and analyze the topography category and distribution of the land area using a deep convolution neural network. The profile analysis results show that the high-precision terrain data presented in this paper are highly consistent with high resolution digital elevation model (DEM) products published by China and US, resulting in the mean elevation errors equal to 1.866 m and 1.074 m, respectively. Furthermore, it can be seen from the comprehensive terrain and morphology analysis by using the orbiter remote sensing images that near the landing point the slope is less than 3° and the fluctuation of the surface is less than 30 cm. This indicates that the overall terrain of Tianwen-1 landing area is flat and the morphology category is relatively single, which meets the requirements of the probe’s safe landing. The terrain produced by Tianwen-1 high-resolution camera data and classification results, which can be effectively applied to the morphological analysis of the landing and patrol areas, when combined with multi-source Mars remote sensing data such as HiRISE, can provide important basic data and reference information for subsequent scientific explorations of Zhurong patrol.

Keywords

Tianwen-1 / Mars exploration / terrain production / topography classification / HiRISE / HiRIC

References

[1] SQUYRES S W,GROTZINGER J P,ARVIDSON R E,et al. In situ evidence for an ancient aqueous environment at Meridiani Planum,Mars[J]. Science,2004,306(5702):1709-1714
[2] JAUMANN R,NEUKUM G,BEHNKE T,et al. The High-Resolution Stereo Camera (HRSC) experiment on Mars Express:instrument aspects and experiment conduct from interplanetary cruise through the nominal mission[J]. Planetary and Space Science,2007,55(7-8):928-952
[3] LEVY J，HEAD J，MARCHANT D. Thermal contraction crack polygons on Mars：classification，distribution，and climate implications from HiRISE observations[J]. Journal of Geophysical Research：Planets，2009，114（E1）：1-19.
[4] BIBRING J P,LANGEVIN Y,POULET F,et al. Perennial water ice identified in the south polar cap of Mars[J]. Nature,2004,428(6983):627-630
[5] YE P J,SUN Z Z,RAO W,et al. Mission overview and key technologies of the first Mars probe of China[J]. Science China Technological Sciences,2017,60(5):649-657
[6] 朱新波,褚英志. “天问”一号任务火星环绕器总体设计[J]. 中国航天,2021(6):25-31
ZHU X B,CHU Y Z. The overall design of Tianwen 1 Mars orbiter[J]. Aerospace China,2021(6):25-31
[7] WAN W,YU T,DI K,et al. Visual localization of the Tianwen-1 lander using orbital,descent and rover images[J]. Remote Sensing,2021,13(17):3439
[8] WU X,LIU Y,ZHANG C,et al. Geological characteristics of China's Tianwen-1 landing site at Utopia Planitia,Mars[J]. Icarus,2021,370:114657
[9] MILLS M M，MCEWEN A S. Preliminary regional geologic map of Utopia Planitia in the potential Tianwen-1 landing region[C]//2021 Annual Meeting of Planetary Geologic Mappers. [S. l.]: NASA-USGS, 2021.
[10] WANG Y,LI B,ZHANG J,et al. The preliminary study of dust devil tracks in southern Utopia Planitia,landing area of Tianwen-1 mission[J]. Remote Sensing,2021,13(13):2601
[11] LUO Y,YAN J,LI F,et al. Spatial autocorrelation of martian surface temperature and its spatio-temporal relationships with near-surface environmental factors across China’s Tianwen-1 landing zone[J]. Remote Sensing,2021,13(11):2206
[12] 邸凯昌,刘斌,刘召芹. 火星遥感制图技术回顾与展望[J]. 航天器工程,2018,27(1):10-24
DI K C,LI B,LIU Z Q. Review and prospect of Mars mapping technique using remote sensing data[J]. Spacecraft Engineering,2018,27(1):10-24
[13] SCHOLTEN F,GWINNER K,ROATSCH T,et al. Mars Express HRSC data processing–methods and operational aspects[J]. Photogrammetric Engineering & Remote Sensing,2005,71(10):1143-1152
[14] ALBERTZ J,ATTWENGER M,BARRETT J,et al. HRSC on Mars express-photogrammetric and cartographic research[J]. Photogrammetric Engineering & Remote Sensing,2005,71(10):1153-1166
[15] KIRK R L，HOWINGTON-KRAUS E，ROSIEK M R，et al. Ultrahigh resolution topographic mapping of Mars with MRO HiRISE stereo images：meter-scale slopes of candidate Phoenix landing sites[J]. Journal of Geophysical Research：Planets，2008，113（E3）：E00A24.
[16] KIM J R，MULLER J P，BLAME M，et al. Geometric ground control of very high resolution imagery using HRSC intersection points and a non-Rigorous camera model[C]//38th Annual Lunar and Planetary Science Conference. Houston, TX, USA: NASA, 2007.
[17] KIM J R,LIN S Y,MULLER J P,et al. Multi-resolution digital terrain models and their potential for Mars landing site assessments[J]. Planetary and Space Science,2013,85:89-105
[18] BUE B D,STEPINSKI T F. Automated classification of landforms on Mars[J]. Computers & Geosciences,2006,32(5):604-614
[19] STEPINSKI T F,BAGARIA C. Segmentation-based unsupervised terrain classification for generation of physiographic maps[J]. IEEE Geoscience and Remote Sensing Letters,2009,6(4):733-737
[20] KRAUT A，WETTERGREEN D. Classification of Mars terrain using multiple data sources[C]// Conference on Intelligent Data Understanding. Mountain View, CA, USA: NASA, 2010.
[21] ONO M，ROTHROCK B，ALMEIDA E，et al. Data-driven surface traversability analysis for Mars 2020 landing site selection[C]//2016 IEEE Aerospace Conference. Big Sky, MT, USA: IEEE, 2016.
[22] ROTHROCK B，KENNEDY R，CUNNINGHAM C，et al. Spoc：deep learning-based terrain classification for Mars rover missions[M]. [S. l. ]：AIAA SPACE，2016.
[23] ZOU Y,ZHU Y,BAI Y,et al. Scientific objectives and payloads of Tianwen-1,China’s first Mars exploration mission[J]. Advances in Space Research,2021,67(2):812-823
[24] SHORTHILL R W,MOORE H J,HUTTON R E,et al. The environs of Viking 2 lander[J]. Science,1976,194(4271):1309-1318
[25] LI R,HWANGBO J,CHEN Y,et al. Rigorous photogrammetric processing of HiRISE stereo imagery for Mars topographic mapping[J]. IEEE Transactions on Geoscience and Remote Sensing,2011,49(7):2558-2572
[26] MCEWEN A S，ELIASON E M，BERGSTROM J W，et al. Mars reconnaissance orbiter's high resolution imaging science experiment （HiRISE）[J]. Journal of Geophysical Research：Planets，2007，112（E5）：E05S02.
[27] XIN X,DI K,WANG Y,et al. Automated detection of new impact sites on Martian surface from HiRISE images[J]. Advances in Space Research,2017,60(7):1557-1569
[28] 孟庆宇,付中梁,董吉洪等. 火星探测高分辨率可见光相机光学系统设计[J]. 深空探测学报(中英文),2018,5(5):458-464
MENG Q,FU Z,DONG J,WANG D. The optical system design of the high-resolution visible spectral camera for China Mars exploration[J]. Journal of Deep Space Exploration,2018,5(5):458-464
[29] MENG Q,WANG D,WANG X,et al. High Resolution Imaging Camera (HiRIC) on China’s first Mars exploration Tianwen-1 mission[J]. Space Science Reviews,2021,217(3):1-29
[30] YAN W,LIU J,REN X,et al. Detection capability verification and performance test for the high resolution imaging camera of China’s Tianwen-1 mission[J]. Space Science Reviews,2021,217(6):1-21
[31] LIU S,ZHAO H,DU Q,BRUZZONE L,et al. Novel cross-resolution feature-level fusion for joint classification of multispectral and panchromatic remote sensing images[J]. IEEE Transactions on Geoscience and Remote Sensing,2022,60:1-14
[32] 中国探月与深空探测网. 天问一号环绕器进入遥感使命轨道[EB/OL]. （2021-11-08）[2022-01-13]. http://www.clep.org.cn/n5982341/c6812977/content.html.