Evaluation of onboard data system architecture, their viability for future gigabits spacecraft data handling system

Super-resolution (fine spatial/spectral) optical, high resolution SAR and multi-instruments for earth observation, science and planetary missions generate several Gbits/s of data requiring high bandwidth data handling system. However, onboard electronics systems face challenges due to constrained size, weight, power, cost and high reliability requirements to sustain in hostile space environment. Apart from these, some qualitative characteristics catering to easy integration, testing and future expansion are looked for in these systems. These requirements can be met with optimal architecture of onboard data handling system. There are many architectures used or under development for high speed data system. This study presents review of these designs with respect to their feasibility for gigabits data system