Microwave short baseline interferometers for localization systems

• Published in: IEEE transactions on instrumentation and measurement Vol. 50; no. 1; pp. 32 - 39
• Main Authors: Benlarbi-Delai, A., Cousin, J.C., Ringot, R., Mamouni, A., Leroy, Y.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.02.2001; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: Global Positioning System; Instrumentation; Interferometers; Interferometry; Measuring instruments; Microwave theory and techniques; Microwaves; Monitoring; Monitors; Phase measurement; Position (location); Prototypes; Satellite navigation systems; Stations; Testing; Transceivers; Transmitters
• ISSN: 0018-9456; 1557-9662
• DOI: 10.1109/19.903875

Positioning determination is often associated with GPS or other complex techniques needing a central monitor station and precise reference time. For distances smaller than several tenths of meters, a simpler real-time method for determining position is described in this paper. This method is based on interferometry, whose features are mainly governed by geometrical parameters. This method is first tested by means of a prototype, operating at 10 GHz, with a test area of approximately 0.5 m/sup 2/, for which the location error is about 1 or 2 cm. The extension of this area size to several square decameters has been obtained at 2.45 GHz. For both situations, the size of the receiving system does not exceed 16 cm/spl times/16 cm.