Averaged Digital Sextant (ADS) for FINS Integration

摘要

This is the final report on the Averaged Digital Sextant for FINS Integration. The engineering model has not been completed at the time of this report due to mechanical problems with the housing and index arm assembly. However, enough has been accomplished to make a determination that the Sextant and the rotary drum encoder are completely feasible from a production stand point. The materials covered by this report include the housing and mechanical design, the problems with conventional sextant parts, the optics, the electrical design and the fabrication of the instrument and the changes made each step of the way to produce a low cost instrument. The encoder, being the heart of the instrument, is covered in the greatest detail. This final report covering work performed from 1 January 1982 thru 30 September 1982. Work performed includes: Determination of instrument specifications; Determination of test parameters; Determination of test procedures; Definition of evaluation process; Engineering of model concept; Engineering of model hardware; Design/Drafting preliminary; Final Design; Re-Design of Present Sextant hardware; Design changes for processing electronics; Evaluation of parts; Assembly; Debug; Evaluation of problems; Remedies and recommendations for problems; Final determination.