The design study has also resulted in the detailed definition of instrument systems and designs and has produced valuable design and analysis tools which will provide for a totally integrated and optimum instrument design.nWith respect to the major problem areas, a redesign of the Hichelson motor has been derived which will make it com¬patible with the spacecraft EMI requirements, the instrument budgets, and the phase lock loop design. Detector tests and studies have identified practical means of improving the NEP of pyroelectric detectors to a value consistent with the instrument objectives and have demonstrated the thermopile detector to be a viable alternate to the pyroelectric. An instrument mounting design has been detailed which jointly accommodates the boresight and instrument design requirements as well as the physical budgets. And finally, new beamsplitter mounting and coating techniques have been devised to provide for its optical stability over the temperature extremes.
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