The Development Of Controlling Software Of The Portable Digital Telemetry Receiver

Low earth orbit(LEO) micro-satellite communication system will be presenting a promising future, due to her small size, low cost and short circle of development, which promotes the development of micro-satellite and relevant technologies. Among them, the remote control and telemetry technology is a very important on, which is the science and technology of automatic measurement and transmission of data by wire, radio, or other means from remote sources, as from space vehicles, to receiving stations for recording and analysis. From this point of view, the LEO micro-satellite telemetry receiver aims at receiving data and delivering analysis on satellite state to the terminal equipment when the satellite enters into certain areas.To meet the needs of being portable and digital, we apply OMAP5912 from TI as the main processor of the receiver. OMAP5912, widely used in intelligent mobile phones, combines the TMS320C55x DSP core with a TI-enhanced ARM926EJS processor to provide the optimal balance of high performance and low power consumption necessary for these devices. Based on OMAP, we developed embedded Linux OS and application software of the controlling system.For the controlling software, we transplanted U-Boot, booting OS, embedded Linux OS, responsible for controlling the hardware and softwareof the receiver, developed file system, organizing and managing the files in OS and compiled the programs to realize the communications between ARM and DSP.Finally, we succeed in developing the software of the controlling system, accomplishing the communication between two cores and making ARM control the whole receiver.