12 November 1996 Miniaturized, low-cost IFOG IMU for tactical weapon applications
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Abstract
Honeywell, under contract to the US Air Force, has developed a 25 cubic-inch IFOG IMU brassboard which demonstrated performance of < deg/hr bias stability, < 0.05 deg/(root) hr random noise and < 250 ppm scale factor accuracy over the full military temperature range. To overcome the size constraint of 25 cubic-inch, the three-axis IFOG optical cluster was configured with the minimum IMU configuration having only eight optical components. Special loop-closure signal processing was developed to accommodate all three- axis sensor electronics within a single 3.4-inch electronic board. To achieve the IMU cost target of < 6000 dollars, the design utilizes a very lowest cost optical components such as an 830nm light source along with a 1300 nm single- mode fiber sensing coil. Further cost reduction was realized through the robust design which provides very relaxed gyro assembly tolerances. The 25 cubic-inch IFOG IMU will have sufficient performance, small size, ruggedness for high-g launch, and low unit production cost to be suitable for use in a wide variety of tactical weapon systems.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ren-Young Liu, Ren-Young Liu, Tamim F. El-Wailly, Tamim F. El-Wailly, Mathew Olson, Mathew Olson, Gary W. Adams, Gary W. Adams, Joseph E. Carroll, Joseph E. Carroll, "Miniaturized, low-cost IFOG IMU for tactical weapon applications", Proc. SPIE 2837, Fiber Optic Gyros: 20th Anniversary Conference, (12 November 1996); doi: 10.1117/12.258210; https://doi.org/10.1117/12.258210
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