December 9, 2011 - Discovery News covers TRX indoor location technology. "The TRX Tracking Unit has both tracking and mapping capabilities and contains a range of sensors similar to a Wii controller. It includes an accelerometer, gyroscope, compass, altimeter and ranging sensors. Data from those sensors is combined and any errant data such as a skewed compass reading is discarded."
December 5, 2011 - Science Nation highlights TRX sensor fusion technology for indoor location in "New Sensor System Tracks Firefighters Where GPS Fails".
October 2011 - "Roadmap for Growth", Washington Post. "How many Washington area drivers would be lost without their GPS system? The handy technology has become so ubiquitous for helping people navigate the streets that any smartphone user can tote the application around in a pocket. Carol Politi is hoping Greenbelt-based TRX Systems will provide the equivalent mainstay for those needing to navigate hallways and corridors — any indoor space beyond the reach of traditional GPS technology."
July 2011 - "Protecting the Bravest" by Joseph Straw of Security Management Magazine highlights the TRX Tracking System. "This system also relies on a small unit carried by the user, but it starts with a known GPS-based location determined before entering a structure. Sensors inside the unit—including a gyroscope, accelerometer, and an altimeter—track movement from that point and transmit it to commanders.
June 15, 2011 - EETIMES discusses the TRX indoor tracking system's capability to "enable people or things to be tracked with pinpoint accuracy regardless of whether they are outside, inside, or in the presence of electronic jamming." See Colin Johnson's article "GPS System with IMUs Track's First Responders".
February 11, 2011 - Carolyn Dawson highlights TRX work for DARPA in TMCNet Machine to Machine "DARPA Awards TRX $750,000 to Continue Expansion".
February 8, 2011 - TRX Systems announces DARPA award to optimize and extend its Sentrix Personnel Tracking System to support GPS-denied navigation in caves and mines.