Research on Software Defined Payload Reconstruction Technology Scheme

Software-defined payload system architectures typically consist of a modular, generalized, reconfigurable hardware platform and a variety of reconfigurable task software. Software-defined payload support system functions are re-constructed on demand, and can flexibly respond to various spatial mission requirements, which is an important development direction of future satellite payload systems. In this paper, combined with the current in-orbit navigation satellite payload single-star or constellation reconstruction time is too long, the re-construction efficiency is too low, etc. for the new requirements of payload reconstruction function, based on the software-defined payload system architecture, a fast response is proposed. Satellite payload reconstruction solution, including dynamic Reconfiguration Design of Load Task Migration application, software task level reconstruction design, FPGA configuration data ground compression and on-board decompression design, and star-star payload based on inter-satellite link design. The reconfiguration scheme can realize the rapid reconstruction of the single-star software defined load by the ground station and the fast reconstruction of the entire constellation through inter-satellite link, suitable for rapid reconstruction of wartime load functions, and greatly shortening or eliminate the abnormal interruption time of spacecraft caused by payload reconstruction, and the scheme has good engineering application value.