Abstract
The developed system, based on the DSP (Digital Signal Processor), provides an integrated store-and-forward APRS (Automatic Packet Reporting System) payload and OBDH (On Board Data Handling) subsystems at a very low cost and on a single board with dimensions less than 10 cm × 10 cm, thereby enabling a new level of performance for CubeSat-class spacecraft. In this paper, we consider the problem of designing a low-complexity AFSK and GMSK modems for a satellite communication link where the constraints on satellite power budget, antenna size, and data rate are such that the available transmit power, aboard the Picosatellite, is 1 Watt. To cut down the cost of the Picosatellite, we give a particular attention to software optimization due to use of small amount of 8K words Radiation Hardness ROM memory containing the application program. We have defined a methodology approach based on two design steps: algorithmic optimization, and optimal programming using Assembler language. Due to the radiation in space and the constraints of the Picosatellite, some measures regarding volume, mass, power, cost and radiation tolerance, had to be taken into consideration when the system was designed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
