The Payload Data Management System for CHANG’E-2
- Paper number
IAC-09.A3.2INT.20
- Author
Prof. Xiaomin Chen, CSSAR/CAS, China
- Coauthor
Prof. Huixian Sun, Chinese Academy of Sciences, China
- Year
2009
- Abstract
Chang’E-2 is the second lunar probe of China. It will be launched before the end of 2011. Chang’E-2 is the forerunner of the second phase of the lunar probe project, which will conduct the soft landing and in site exploration. The orbit of the Chang’E-2 is designed 100×100km circular orbit for normal operation and 100×15km elliptical orbit for taking high resolution stereo image of the lunar surface, which is useful for soft landing site investigation. The main objective of the project is to acquire the high resolution stereo image of the moon surface for the landing site investigations of next lunar mission, analyze the content and the distribution of the useful elements, explore the lunar soil thickness and estimate the resource of He-3, and explore the space environment of the moon. The payload system consist of the high resolution stereo camera, laser altimeter, microwave radiometer, Gamma and X ray spectrometer, high energy ion detector, solar wind detector and the payload data management system. The Payload Data Management System (PDMS) is similar to Chang’E-1 and parts of it are new designed to satisfy the new requirements for high data rate and larger capacity of data recording. The system consists of Bus Controller, Solid State Recorder, High Rate Multiplexer, Remote Terminal and Power Distributor. It is a distributed system based on the 1553B data bus. All the science data are acquired, processed, stored by the system and transmitted to the ground via S band channel. The data format accords with the CCSDS AOS standards. The architecture and characteristic of the system will be introduced in the paper, and the new designs and improvement that is different from Chang’E-1 will be described in detail.
- Abstract document
- Manuscript document
IAC-09.A3.2INT.20.pdf (🔒 authorized access only).
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