Instruments of RT-2 Experiment onboard CORONAS-PHOTON and their test and evaluation V: Onboard software, Data Structure, Telemetry and Telecommand

摘要

The onboard software and data communication in the RT-2 Experiment onboardthe Coronas-Photon satellite is organized in a hierarchical way to effectivelyhandle and communicate asynchronous data generated by the X-ray detectors. Aflexible data handling system is organized in the X-ray detector packagesthemselves and the processing electronic device, namely RT-2/E, has thenecessary intelligence to communicate with the 3 scientific payloads by issuingcommands and receiving data. It has direct interfacing with the Satellitesystems and issues commands to the detectors and processes the detector databefore sending to the satellite systems. The onboard software is configuredwith several novel features like a) device independent communication scheme, b)loss-less data compression and c) Digital Signal Processor. Functionality ofthe onboard software along with the data structure, command structure, complexprocessing scheme etc. are discussed in this paper.