Development of a Test Bed Facility for High Accuracy Positioning in Difficult Environments

Terry Moore, Chris Hill, Chris Hide, Paul Cross, Lawrence Lau, David Walsh, John Cooper, Rigas Ioannides, Washington Ochieng and Shaojun Feng

Abstract:	The SPACE project is a joint project undertaken by four of the UK’s leading academic GNSS universities and support from eight of the UK’s leading companies in the field of GNSS. The project aim is to develop a test bed facility that gives centimeter level positioning in all conditions and environments. The test bed can be used to evaluate positioning accuracy of other sensors, or to test new algorithms via an open interface. In order to achieve this aim, a number of activities are underway. Firstly a reference environment has been established in order to provide an area in which all signal obstructions are known. The environment contains a range of conditions including open areas, partial obstructions of GPS signals close to a building, and inside a building. The environment can then be used to collect data in which all parameters are known which can be used to develop and validate simulation models, help to understand error characteristics, and provide an environment in which the test bed itself can be tested. This paper presents the methodology for establishing a reference environment for the test bed. The environment is then used to validate a multipath simulation of a static GPS receiver close to a wall. The paper then extends this approach to the dynamic case where the performance of a navigation grade INS is assessed to identify if it is suitable to provide a reference trajectory in dynamic conditions.
Published in:	Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005) September 13 - 16, 2005 Long Beach Convention Center Long Beach, CA
Pages:	2066 - 2075
Cite this article:	Moore, Terry, Hill, Chris, Hide, Chris, Cross, Paul, Lau, Lawrence, Walsh, David, Cooper, John, Ioannides, Rigas, Ochieng, Washington, Feng, Shaojun, "Development of a Test Bed Facility for High Accuracy Positioning in Difficult Environments," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 2066-2075.
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