Precise Robust Inertial Guidance for Munitions (PRIGM)
Abstract
The Precise Robust Inertial Guidance for Munitions (PRIGM) program will develop low-Cost, Size, Weight, and Power (CSWaP) inertial sensor technology for GPS-free munitions guidance. PRIGM comprises two focus areas: 1) Development of a Navigation-Grade Inertial Measurement Unit (NGIMU) that transitions state-of-the-art MEMS to DoD platforms by 2020; and 2) Research and development of Advanced Inertial MEMS Sensors (AIMS) to achieve gun-hard, high-bandwidth, high dynamic range navigation requirements with the objective of complete autonomy in 2030. PRIGM will advance state-of-the-art MEMS gyros from TRL-3 devices to a TRL-6 transition platform (complete IMU) that enables Service Labs to perform TRL-7 field demonstrations. PRIGM will exploit recent advances in heterogeneous integration of photonics and CMOS and advanced MEMS technology to realize novel inertial sensors for application in extreme dynamic environments and beyond navigation-grade performance. High-dynamics navigation applications, such as smart munitions, require low-CSWaP inertial sensors demonstrating high bandwidth, high precision, and high shock tolerance. Conventional MEMS inertial sensors rely on capacitive sensing to measure position, which suffers from large parasitics, temperature sensitivity, and gas damping from narrow gaps. While various methods have been used to overcome challenges with capacitive readout, optical sensing has demonstrated potential for high sensitivity, low noise, and robust inertial sensing. Recent advances in heterogeneous integration, on-chip optical waveguides, and quantum-assisted sensing and readout demonstrate potential for optically interrogated MEMS enabled gyros/accelerometers (OMEGA), interferometric and resonant photonic waveguide optical gyros (iWOG/rWOG), and whole angle gyros (WAG) that reach fundamental measurement limits. Fully integrated opto-MEMS inertial sensors may comprise stiffer mechanical structures that are thus capable of higher shock, vibration, and temperature tolerance along with improved navigation performance. Advanced research for the program is budgeted in PE 0603739E, Project MT-15.
Document Details
- Document Type
- Accomplishment
- Publication Date
- Oct 01, 2016
- Source ID
- 8997e27035652b57a047e8e5b8060272
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- Root: ELECTRONICS TECHNOLOGY