Relative Ultra Tight IMU/GPS Integration
Navy SBIR FY2008.2

Sol No.: Navy SBIR FY2008.2
Topic No.: N08-145
Topic Title: Relative Ultra Tight IMU/GPS Integration
Proposal No.: N082-145-0795
Firm: Intelligent Automation, Inc.
15400 Calhoun Drive
Suite 400
Rockville, Maryland 20855
Contact: Babak Azimi-Sadjadi
Phone: (301) 294-5269
Web Site:
Abstract: Intelligent Automation Inc. (IAI) proposes a novel ultra tightly integrated IMU/GPS system where two or more integrated IMU/GPS units send their raw observation as well as IMU measurements for relative positioning. In this proposed method we develop a new GPS receiver based on IAI's Cooperative RAKE receiver that is capable of significantly reducing the effect of multipath induced error by tracking each discernable multipath and line of sight signal on each RAKE finger independently. In addition to this, the integrated IMU/GPS algorithm uses the PLL tracking loop to generate and track GPS signal. Once a GPS satellite (channel) is lost this generated GPS signal will be used as the input to the receiver so that the PLL continuously track the lost channel. This allows a very narrowband filter for the PLL with very fast carrier recovery and tracking when the lost channel is regained. Even in the case of total GPS blackout a high accuracy IMU is used for generating GPS signal for the input of the receiver for an interval of time which depends on the performance of the IMU.
Benefits: IAI has an established and proven commercialization strategy to bring the technology developed under the SBIR programs to market. Our strategy involves aligning our SBIR Phase I and II efforts with ongoing/prospective DOD 6.3 Programs, and teaming with the prime contractors (specifically Boeing) on these DOD programs to ensure a transition into these programs. Over the years IAI has establish a strong relationship with industry leaders such as Raytheon, Northrop Grumman, CSC, SAIC, Honeywell, BAE and AT&T. We leverage these relations in identifying such transition opportunities. As the technology matures through a Phase III investment, we focus on identifying commercial (non DOD) markets and applications, and use internal investments to productize or license our technology. Application for patents and copyrights is a typical part of our commercialization process to protect our Intellectual property.