Results 11 to 20 of about 24,212,222 (226)

Mars Gravity Field Determination Using Tianwen-1 Orbiter Tracking Data

The Astrophysical Journal Letters
The Martian gravity field is a key data set for studying the internal structure of Mars. For this purpose, we processed all the two-way Doppler tracking data of the Tianwen-1 orbiter from 2021 June to 2024 October and determined a new degree and order 80
Chongyang Wang, Jianguo Yan, Shanhong Liu, Shangbiao Sun, Jianfeng Cao, Denggao Qiu, Xie Li, Jean-Pierre Barriot   +7 more
doaj   +3 more sources

Analysis of the background signal in Tianwen-1 MINPA

Advances in Space Research
Since November 2021, Tianwen-1 started its scientific instrument Mars Ion and Neutral Particle Analyzer (MINPA) to detect the particles in the Martian space. To evaluate the reliability of the plasma parameters from the MINPA measurements, in this study,
Kong, Linggao, Li, Lei, Li, Wenya, Ma, Jijie, Miao, Bin, Qiao, Fuhao, Shen, Chenglong, Tang, Binbin, Wang, Limin, Wang, Yuming, Wang, Ziyang, Zhang, Aibing   +11 more
core   +3 more sources

Surface Permittivity Estimation of Southern Utopia Planitia by High-Frequency RoPeR in Tianwen-1 Mars Exploration [PDF]

IEEE Transactions on Geoscience and Remote Sensing
China’s Tianwen-1 successfully landed in the southern Utopian Planitia of the Martian surface on 15 May 2021. The Zhurong Rover, equipped with a high-frequency full polarimetric Rover Penetrating Radar (RoPeR), traveled 1921 m to investigate the shallow ...
Alani, Amir M., Fang, Guangyou, Liu, Hai, Zou, Lilong   +3 more
core   +2 more sources

Joint Observation of a Rotational Discontinuity by Tianwen‐1 and MAVEN at Mars

Geophysical Research Letters
The solar wind plays a crucial role in the evolution of planets in the solar system, particularly Mars. Mars has no global intrinsic magnetic field, leading the solar wind to interact directly with the Martian ionosphere and atmosphere.
Z. Z. Guo, H. S. Fu, J. B. Cao, Y. M. Wang, M. Ge, T. Y. Zhou, W. D. Fu, W. Z. Zhang, C. Q. Wang   +8 more
doaj   +2 more sources

Evaluating the Contributions of Tianwen-1 Orbiter Tracking Data to the Mars Gravity Field Modeling

The Astrophysical Journal
Mars gravity field models are critical data sets for studying the planet’s internal structure. Currently, Mars gravity field determination is primarily based on modeling of tracking data from spacecraft such as Mars Reconnaissance Orbiter, Mars Odyssey ...
Chongyang Wang, Jianguo Yan, Shanhong Liu, Shangbiao Sun, Wanling Yang, Jianfeng Cao, Denggao Qiu, Xie Li, Jean-Pierre Barriot   +8 more
doaj   +2 more sources

The Dielectric Properties of Martian Regolith at the Tianwen‐1 Landing Site

Geophysical Research Letters, 2023
Mars' surface is characterized by a weathered layer of regolith and exposed rock exposures that are the results of long‐term geological processes. The Mars Rover Penetrating Radar (RoPeR) on board the Zhurong rover of China's first Mars mission (Tianwen ...
Ling Zhang, Yi Xu, Renrui Liu, Ruonan Chen, Roberto Bugiolacchi, Rui Gao   +5 more
doaj   +2 more sources

Ground calibration of the Mars orbiter magnetometer onboard Tianwen-1

Earth and Planetary Physics, 2023
Ground calibration experiments of the Mars orbiter magnetometer (MOMAG) onboard the orbiter of Tianwen-1 were performed to determine the sensitivity, misalignment angle, and offset of the sensors.
ManMing Chen, Kai Liu, XiaoWen Hu, YiRen Li, XinJun Hao, ZongHao Pan   +5 more
doaj   +2 more sources

Crater Detection and Population Statistics in Tianwen-1 Landing Area Based on Segment Anything Model (SAM)

Remote Sensing
Crater detection is useful for research into dating a planetary surface’s age and geological mapping. The high-resolution imaging camera (HiRIC) carried by the Tianwen-1 rover provides digital image model (DIM) datasets with a resolution of 0.7 m/pixel ...
Yaqi Zhao, Hongxia Ye
doaj   +2 more sources

Prediction for Arrival Time and Parameters of Corotation Interaction Regions using Earth–Mars Correlated Events from Tianwen-1, MAVEN, and Wind Observations

The Astrophysical Journal
Using the Stream Interaction Regions list from the Tianwen-1/Mars Orbiter Magnetometer (MOMAG) data between 2021 November and 2021 December and from Wind observations, we present an accurate prediction for the arrival time and in situ parameters of ...
Zhihui Zhong, Chenglong Shen, Yutian Chi, Dongwei Mao, Bin Miao, Zhiyi Fu, Junyan Liu, Beatriz Sánchez-Cano, Daniel Heyner, Yuming Wang   +9 more
doaj   +2 more sources

Parallel observations process of Tianwen-1 orbit determination

Open Astronomy
To meet various requirements of the future deep space missions of China, State Key Laboratory of Astronautic Dynamics constructs a new orbit determinatin software with parallel observations process.
Huyan Zongbo, Zhang Dapeng, Ma Pengbin, Li Hengnian, Min Zhai   +4 more
doaj   +2 more sources