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Mars Orbiter Mission (MOM) of Indian Space Research Organization (ISRO), being a deep space interplanetary mission, has to face several challenges due to the constraints like increase in round trip communication delay and communication blackout and whiteout due to Sun-Earth-Mars geometry. In order to overcome these constraints, the current onboard software was revisited and autonomy features, selectable...
The satellite as a system consists of various bundles of harness interconnections between subsystems, across the panels. These bundles of harness consist of different types of cables - power lines, data lines, command lines. Power lines from solar array also carry switching currents from the solar array switching circuits. When all these cables are bundled together, it essentially brings out the problem...
The MARS Orbiter Mission (MOM) spacecraft carries on-board sensitive receiver and high gain antenna system to cater to the requirement of inter-planetary and deep space communication. This paper describes, among others, the stringent EMC requirements for MOM spacecraft, summary of EMC analysis carried out, modification on subsystem level EMI/EMC test limit and EMI/ESD mitigation techniques followed...
On-orbit data from the surface charge monitor payload of GSAT-2 spacecraft has been briefly summarized in this paper. The payload, comprising four detector electronics heads and a central electronics module, has been operating continuously since May 14, 2003, except when switched OFF during the period from August 14, 2003 to September 12, 2003. The data correlated well with the GOES-10/12 data on...
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