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Wide Area Augmentation System Research and Development. Final Report.
| 题名： | Wide Area Augmentation System Research and Development. Final Report. |
| 作者： | van Graas-F. |
| 关键词： | *Aviation-systems.;Aircraft-; Antennas-. |
| 摘要： | In support of the development of the Wide Area Augmentation System (WAAS), three projects were performed under Aviation Cooperative Agreement 01-G-016. The first project involved participation in the WAAS Integrity Performance Panel (WIPP), which included the development of the dual-frequency Code Noise and MultiPath (CNMP) monitor, review of integrity documentation, as well as the analysis of specific integrity monitors. The second project was focused on the characterization and reduction of Geostationary Satellite (GEO) multipath error. The third project involved the development of a dual-frequency Integrated Multipath-Limiting Antenna (IMLA) for WAAS Reference Sites (WRS) to improve the accuracy of the pseudorange measurement data. Major findings of the research are summarized below: (1) A dual-frequency Code Noise and MultiPath (CNMP) monitor was developed to significantly reduce multipath error at the WAAS Reference Sites (WRS). (2) Based on ground and flight test evaluations, Narrow-Band Geostationary Satellite (GEO) multipath and noise ranging errors can be as small as 0.3 m (95%) if a multipath-limiting High-Zenith Antenna (HZA) is used. (3) A dual-frequency Integrated Multipath-Limiting Antenna (IMLA) was prototyped and determined to be feasible for WAAS applications. (4) A new method was developed for the measurement and evaluation of GPS antenna phase and group delays. |
| 报告类型： | 科技报告 |
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