The Mars Orbiter Subsurface Investigation Radar (MOSIR) on China’s Tianwen-1 Mission

Mingyi, Fan; Lyu, Peng; Su, Yan; Du, Kui; Zhang, Qichun; Zhang, Zhen; Dai, Shun; Hong, Tiansheng

doi:10.1007/s11214-020-00786-4

Cited by 32 publications

(36 citation statements)

References 19 publications

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“…The processing procedures of each instrument are given in Table 3. The more detailed information about calibration is published in the overview of each instrument (Tang et al 2020;Yu et al 2020;Kong et al 2020;Liang et al 2021;Meng et al 2021;Fan et al 2021;He et al 2021;Du et al 2020;Peng et al 2020;Zhou et al 2020).…”

Section: Data Calibration (Level 2a Processing)mentioning

confidence: 99%

Design and Validation of the Scientific Data Products for China’s Tianwen-1 Mission

Zhang

et al. 2021

Space Sci Rev

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The Tianwen-1 mission is China’s first Mars exploration mission. To complete the scientific objectives of “orbiting, landing, and patrolling” in one mission, thirteen instruments for acquiring multi-disciplinary data are configured. The data products with rich ancillary data and flexible structures will facilitate the data application. To integrate the requirements of experts from disparate disciplines and leverage new information technologies, a complete redesign of data products is promoted in the Tianwen-1 mission. We discuss the whole process of data product generation from the data pipeline design to data validation. We design the various data products according to the application requirements of each data type, including radar echo data, spectrum data, image data, energy spectrum data, magnetic field data, meteorological data, and acoustic data. Since various error sources will exist in the generation chain of the data products, data validation is essential before release to the public; the validation activities are discussed at the end. We deliver these scientific products to the community in a timely manner, with ancillary information and quality information. This paper can provide practical reference for Tianwen-1 data application.

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Section: Data Calibration (Level 2a Processing)mentioning

confidence: 99%

Design and Validation of the Scientific Data Products for China’s Tianwen-1 Mission

Zhang

et al. 2021

Space Sci Rev

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“…Four primary antennas (X ANT1, X ANT2, Y ANT1, Y ANT2, shown in Figure 2a) are mounted on the satellite side, and the +Z axis will always face Mars or the ground. The length of each Y antenna is 5 m, and each X antenna is 4.5 m [5]. MOSIR antennas are mounted on the Tianwen-1 orbiter model to maintain the relative location and angle in the ground experiment.…”

Section: Experimental Conditionmentioning

confidence: 99%

“…MOSIR transmits electromagnetic waves to the Martian sub-satellite point and receives echoes from the Martian surface and subsurface at an altitude of 265-800 km [5]. The Remote Sens.…”

Section: Introductionmentioning

confidence: 99%

“…LFM signal has many advantages: it can transmit more energy without increasing the transmitter power. In terms of the frequency channels, MOSIR has designed four operating modes: Low-Frequency Radio Receiving mode (LFRR), High-Frequency Subsurface Sounding mode (HFSS), Low-Frequency Subsurface Sounding and Active Ionosphere Sounding mode (LFSS+AIS), and Altitude Detection Mode (ADM) [5]. In HFSS mode, the range resolution is ~7.5 m, and in LFSS mode, the range resolution is ~30 m in free space.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, MOSIR possesses dual-polarization detection ability, which can receive cross-polarization echoes (HH and HV). The orbiter-based Martian surface penetrating Radar (MOSIR) will provide new insights to discover water ice distribution on Mars with dual-polarization observations [5].…”

Section: Introductionmentioning

confidence: 99%

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Flight Experiment Validation of Altitude Measurement Performance of MOSIR on Tianwen-1 Orbiter

Hong

Mingyi

et al. 2021

Remote Sensing

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The MOSIR (Mars Orbiter Subsurface Investigation Radar) is one of the scientific payloads carried by the Tianwen-1 orbiter. MOSIR conducted a ground experiment in the desert near Dengkou County, northern China, before the launch of the Tianwen-1 satellite. The MOSIR prototype was suspended from a hot air balloon and flew over a flat region at an altitude of 2500–3300 m. This experiment aimed to verify the system performance and data processing. The data collected in subsurface sounding mode is performed range compression, and the altitude measurement data removes invalid data. After processing, the altitude measurement results of two operating modes are analyzed and compared with that of the Global Position System (GPS), which verifies the accuracy of the altitude measurement.

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Sounding Radars and Ground Penetrating Radars Designed for the Exploration of Our Solar System – Focus on Planet Mars

CIARLETTI

2024

Ground Penetrating Radar

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The Mars Orbiter Subsurface Investigation Radar (MOSIR) on China’s Tianwen-1 Mission

Cited by 32 publications

References 19 publications

Design and Validation of the Scientific Data Products for China’s Tianwen-1 Mission

Design and Validation of the Scientific Data Products for China’s Tianwen-1 Mission

Flight Experiment Validation of Altitude Measurement Performance of MOSIR on Tianwen-1 Orbiter

Sounding Radars and Ground Penetrating Radars Designed for the Exploration of Our Solar System – Focus on Planet Mars

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