Tomographic Imaging on Distributed Unattended Ground Sensor Arrays

摘要

The objective of this project was to demonstrate tomographic data fusion from distributed ground sensor arrays. The project leveraged other DARPA work by the same researchers at the University of Illinois on the topic of interferometric digital imaging. The current program was oriented toward design of an array of imaging sensors, including both cameras and interferometric sensors, to accurately and robustly locate and track ground targets. Over the course of this project we designed and constructed five first-generation sensor modules. Four of these modules were fitted with 180-degree panorama video sensor heads, while the fifth used a sensor head consisting of a rotational shearing interferometer. Two modules were used in field tests with IR cameras replacing the visible-light sensor heads. In a second field test, four modules with visible-light CMOS cameras were used to demonstrate tomographic imaging of a human subject moving through a test environment. In addition, a smaller, low- power second generation module, based on the StrongArm processor, was designed, assembled and tested.