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A High-Resolution Digital Terrain Model Mosaic of the Mars 2020 Perseverance Rover Landing Site at Jezero Crater
Tao, Yu; Muller, Jan-Peter; Xiong, Siting +2 more
We demonstrate the capabilities of a published MADNet monocular height estimation network in producing a refined digital terrain model (DTM) mosaic at 50 cm/pixel resolution for the Mars 2020 Perseverance rover landing site in Jezero crater on Mars. Our approach utilizes the publicly available Mars 2020 Terrain Relative Navigation (TRN) High-Resol…
Geometric Calibration of the ESA Mars Express Orbiter High Resolution Stereo Camera
Li, D.; Li, J.; Liu, W. +3 more
The high-resolution stereo camera mounted on the Mars Express (MEX) spacecraft of the European Space Agency is specifically designed for planetary photogrammetry and mapping missions. High-precision geometric calibration is required to maintain the geometric quality of satellite imaging. This study aimed to develop a Martian geometric calibration …
Simplified Automatic Atmospheric Correction for THEMIS Infrared Data
Edwards, Christopher S.; Rogers, A. Deanne; Ye, Cheng +1 more
Thermal infrared spectral data from the Thermal Emission Imaging System (THEMIS) on Mars Odyssey can provide diagnostic information to characterize Martian surface compositions. Accurately isolating the atmospheric contribution from the thermal radiance of THEMIS data is essential for surface mineralogy analysis. In this work, we present improved …
Characterization of the Candidate Landing Region for Tianwen-1—China's First Mission to Mars
Liu, Wai Chung; Wu, Bo; Li, Yuan +7 more
This paper presents our efforts to characterize the candidate landing region (109°-133°E, 23°-30°N) for Tianwen-1, China's first mission to Mars, in terms of engineering safety and scientific significance. Topographic analysis reveals that the region has a low elevation around −4,230 m, and 98% of the region have slopes smaller than 8°. The geomor…
Model Age Derivation of Large Martian Impact Craters, Using Automatic Crater Counting Methods
Norman, C.; Lagain, A.; Servis, K. +3 more
Determining when an impact crater formed is a complex and tedious task. However, this knowledge is crucial to understanding the geological history of planetary bodies and, more specifically, gives information on erosion rate measurements, meteorite ejection location, impact flux evolution and the loss of a magnetic field. The derivation of an indi…
Subsurface Reflectors Detected by SHARAD Reveal Stratigraphy and Buried Channels Over Central Elysium Planitia, Mars
Tao, Yu; Muller, Jan-Peter; Xiong, Siting +3 more
The Central Elysium Planitia (CEP) is one of the youngest geological units on Mars and displays evidence of volcanic and fluvial activities on the surface. The origin of the CEP material has long been debated with a range of hypotheses from purely fluvial to solely volcanic origins. This study presents a comprehensive investigation of SHAllow RADa…
Finding SEIS North on Mars: Comparisons Between SEIS Sundial, Inertial and Imaging Measurements and Consequences for Seismic Analysis
Lognonné, P.; Banerdt, W. B.; Golombek, M. P. +10 more
In this paper, we present the results obtained in the determination of the true north direction on Mars by using a gnomon on the InSight mission and compare the measurements with either the North determination from the Inertial Measurement Unit and imaging analysis. The obtained measurement has been used to populate the SEIS orientation informatio…
Making an Onboard Reference Map From MRO/CTX Imagery for Mars 2020 Lander Vision System
Johnson, Andrew; Cheng, Yang; Ansar, Adnan
The Mars 2020 rover, Perseverance, landed in Jezero crater (18.4663°N, 77.4298°E) on February 18, 2021 to collect samples from Mars that could be returned to Earth by a future Mars Sample Return campaign. While providing a rich sampling opportunity, Jezero also contains numerous landing hazards including scarps, canyons, mesas, dune fields, rock f…
Location and Setting of the Mars InSight Lander, Instruments, and Landing Site
Golombek, M.; Warner, N. H.; Williams, N. +23 more
Knowing precisely where a spacecraft lands on Mars is important for understanding the regional and local context, setting, and the offset between the inertial and cartographic frames. For the InSight spacecraft, the payload of geophysical and environmental sensors also particularly benefits from knowing exactly where the instruments are located. A…
A Generic Pushbroom Sensor Model for Planetary Photogrammetry
Geng, Xun; Xu, Qing; Lan, Chaozhen +1 more
Different imaging instruments are designed in the planetary exploration missions, which require respective photogrammetric software modules to support the geometric processing of planetary remote sensing images. To decrease the cost of software development and maintenance, this paper presents a generic pushbroom sensor model for planetary photogra…