Requirements for DGPS-based TSPI system used in aircraft noise certification tests
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1997-04-30
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Alternative Title:Requirements for DGPS-based TSPI system used in aircraft noise certification tests : letter report
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Abstract:This letter report addresses that portion of a noise certification applicant’s Differential Global Positioning System (DGPS-based), Time Space Position Information (TSPI) system which is to be used as a position reference in place of a laser tracker, microwave system, photoscaling, or other TSPI system. Section 1 presents background information and the objectives of this report. Section 2 discusses DGPS system design issues, including configuration, airport survey, DGPS receiver output data and sources of error in DGPS systems. Section 3 contains specific requirements on material to be provided to the FAA as part of an application for DGPS-based TSPI system approval. Section 4 gives specific examples of data to be stored for GPS receivers from Ashtech, Inc., Leica, Inc., Novatel Communications, and Trimble Navigation, Ltd. Appendix A reproduces an FAA memorandum regarding the use of DGPS for general certification flight testing. This letter report provides recommended further requirements for a DGPS system to be used for aircraft noise certification.
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