Each month, NTB highlights tech briefs related to a particular area of technology in a special section known as Technology Focus. Here's an Insider look at the April focus on Sensors.
Wearable Environmental and Physiological Sensing Unit
Developed at NASA™s Ames Research Center, the wearable environmental and physiological sensing unit (WEPS) is a prototype of systems to be worn by emergency workers to increase their level of safety. The WEPS includes sensors that measure a few key physiological and environmental parameters, a microcontroller unit that processes the digitized outputs of the sensors, and a radio transmitter that sends the processed sensor signals to a computer in a mobile command center. (Page 28)
Iterative-Transform Phase Retrieval Using Adaptive Diversity
NASA Goddard Space Flight Center’s phase-diverse iterative- transform phase-retrieval algorithm enables high-spatial-frequency, high-dynamic-range, image-based wavefront sensing. No prior phase-retrieval algorithm has offered both high dynamic range and the capability to recover high-spatial-frequency components. (Page 32)
Click here to read previously published tech briefs on Sensors and other technologies.

