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The LAAS Integrated Multipath Limiting Antenna (IMLA)

15

Citations

0

References

2002

Year

D. Bryce Thornberg, Dean S. Thornberg, M.F. DiBenedetto, Michael Braasch, Frank van Graas, Chris Bartone
Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002)

Abstract

The significant portion of the reduction of multipath in the LAAS ground system is accomplished by means of the Integrated Multipath Limiting Antenna (IMLA). Many years of analysis, design and development have been applied to the creation of a dual beam IMLA which provides the performance to meet the demanding requirements of accuracy, availability and integrity for the LAAS Ground Facility (LGF). Ground multipath rejection on the order of 35 to 40 dB is achieved with the IMLA throughout the entire satellite hemispherical coverage volume. Flight testing of LAAS systems utilizing the IMLA at both the FAA William J. Hughes Technical Center and Ohio University has shown that the IMLA rejects multipath to levels which have been demonstrated to allow full compliance to the LGF specifications.