Research And Development Of Wireless Transmission Equipment In Intra-Satellite Control System

The development and crystallization of modern science and technology promotes the generation of space technology, which provides a convenient access to explore the world more deeply and widely. In the development of space technology, satellite is an important field, and is widely in communication, navigation, resource detection etc. The cable connection is the main communication mode in intra-satellite currently, and the problems associated to the wires themselves. The long-lengthy cables, complicated interface and circuit requirements, and higher maintenance costs, all affect the adaptability and robustness of intra-satellite control system. With the future satellite develop towards a more independent, miniature, intelligent and large distributed direction, wired technology will become increasingly unable to meet the demand in intra-satellite communications.In recent years, with the rapid development of communication technology, the development and application areas of wireless communication technology increases rapidly, and has exceeded the wired mode. For the space industry, wireless technology offers a number of specific advantages over existing (wired based) solutions, like strong adaptability, good expansibility, low cost, simple maintenance and other characteristics.This paper introduces the development of satellite and the traditional communication mode of intra-satellite, research the status of the investigation at home and abroad, and analysis of the great advantages and application prospects of wireless network communication technology in intra-satellite through the comparison of wired network communication. This paper introduces the structure and technical requirements of selected typical control system inside the satellite. With examined and comparison of application range, transmission rate, throughput and delay of the mainstream of short distance wireless communication technology, this paper selected IEEE802.11n as wireless technology scheme, and its performance is simulated and analyzed.According to the application scenarios and technical requirements, this paper analyzes and determines the overall design scheme of wireless transmission equipment in intra-satellite control system, and accomplish the development of hardware and software realization.