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Compact and Integrated IMU for GPS Denied Navigation Using Fast-Light Gyroscopes and Accelerometers

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8651-13-C-0018
Agency Tracking Number: F112-100-2328
Amount: $999,893.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: AF112-100
Solicitation Number: 2011.2
Solicitation Year: 2012
Award Year: 2014
Award Start Date (Proposal Award Date): 2014-07-17
Award End Date (Contract End Date): 2015-10-11
Small Business Information
1645 Hicks Road, Suite R, Rolling Meadows, IL, 60008-1227
DUNS: 062914119
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Shih Tseng
 Staff Scientist
 (847) 358-2592
Business Contact
 Rabia Shahriar
Title: president
Phone: (847) 358-2592
Research Institution
ABSTRACT:For GPS denied navigation, there is a need for developing inertial measurement units (IMU), employing gyroscopes and accelerometers, with better accuracy and/or smaller volume and weight than the state of the art.Under Phase I, we have established the feasibility of realizing a superluminal ring laser gyroscope (SRLG) and a superluminal ring laser accelerometer (SRLA), based on diode-pumped alkali lasers (DPALs), augmented by a fast-light Raman cells.The SRLG can improve the accuracy of rotation sensing by nearly five orders of magnitude.Alternatively, for a given accuracy need, the SRLG can be very small.The SRLA can be very compact, and achieve a sensitivity of 10 pico-g/Hz.The primary goal of the Phase II effort is to demonstrate a prototype IMU that would house three SRLGs and three SRLAs for 3-axis rotation and acceleration sensing, utilizing miniature vapor cells and frequency-stabilized lasers.The prototype will be tested and analyzed in order to identify any possible technical hurdles in meeting the size, weight, power and performance goals stated in the solicitation, as well as to address applicability to weapon systems and aircraft/spacecraft environments.Northwestern University will participate as a subcontractor.Dr. Selim Shahriar, inventor of the SRLG and the SRLA and the chief scientific adviser at DOT, will coordinate the overall effort.BENEFIT:Three SRLAs, combined with three SRLGs, can be used to realize a high accuracy IMU that is very compact andlight weight.Such an IMU could also be relatively inexpensive.An IMU of this type could have a significant impact on guidance, navigation and control systems for spacecraft, launch vehicles, missiles, kill vehicles, smart munitions, and other applications requiring precision inertial knowledge.Non-DoD applications include spacecraft guidance, navigation and control, commercial aviation, emergency response in urban canyons, mining and tunneling operations, and maritime operations.

* Information listed above is at the time of submission. *

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