Applications of Photogrammetry and Remote Sensing Technologies in Tianwen-1 Mission

Abstract

Tianwen-1 represents China’s first effort to explore Mars. The developed technologies of interest include orbiter image mapping based on a strict geometric model, lander localization based on a two-step method, and telepresence reconstruction based on multi-source data. These technologies have been developed to directly support day to day operations of the Zhurong rover. This paper presents a brief overview of the applications of photogrammetry and remote sensing technologies in the Tianwen-1 mission. To provide context for the analysis and interpretation of the in situ measurements, the basis of this study is the use of available multi-source remote sensing data to demonstrate the analysis of Martian geomorphic characteristics within 60 km2 of the landing area. Combining the scientific payloads of the orbiter and rover, the comprehensive exploration of the landing area in terms of morphology, mineralogy, stratigraphy, and climatology will greatly promote understanding of the geological evolution of the largest impact basin on Mars, Utopia Planitia, in the planetary science community.