Wideband Location Positioning System (WLPS) for a GPS-Denied Environment

摘要

In recent years, test and evaluation (T&E) in Military Operations on Urbanized Terrain (MOUT) facilities has received increased attention due to the emphasis on improving the ability to conduct urban warfare. Support of Future Force warrior T&E of components and systems will require accurate time space position information (TSPI). Although the Global Positioning System has revolutionized T&E by easily providing accurate TSPI in open environments, it is inadequate for urban and indoor environments, so an alternative method for obtaining TSPI in MOUT test sites is needed. The Georgia Tech Research Institute has pursued development of the Wideband Location Positioning System, which will lead to a small, low-power receiver that can be embedded in a system under test (SUTJ to capture TSPI data for T&E. The development is based on the use of longpseudo random noise sequences with chip durations of 546 picoseconds, yielding native resolutions of 0.16 meters. This system will be configured with a completely passive receiver, as well as transmitters that are fixed at known locations around the SUT. This system will be effective when the SUT is behind walls or inside structures, and the position of the SUT will be determined in the after-action review.