| Presentation | 2007-07-27 Reducing Time To First Fix of GPS Takeyasu SAKAI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | One of navigation performance parameters, TTFF (time to first fix), means time leading to the first position fix from power-on of the receiver. TTFF is determined by acquisition time of GPS signals and time necessary for reception of navigation message which contains each satellite orbit information. While various technologies and algorithms are proposed to reduce signal acquisition time, the reception time of navigation message has been the dominant parameter of TTFF. In order to reduce TTFF, the author investigated techniques to reduce time to obtain orbit information with the accuracy for navigation purpose. Here the author proposes a method applicable to the SBAS, satellite-based augmentation system, which will be operational very shortly in Japan. The method is also applicable to augmentation signal of the QZSS, quasi-zenith satellite system, which is being developed by Japan. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | GPS / L2C / second civil signal / satellite navigation / navigation electronics |
| Paper # | SANE2007-55 |
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| Conference Information | |
| Committee | SANE |
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| Conference Date | 2007/7/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Space, Aeronautical and Navigational Electronics (SANE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Reducing Time To First Fix of GPS |
| Sub Title (in English) | |
| Keyword(1) | GPS |
| Keyword(2) | L2C |
| Keyword(3) | second civil signal |
| Keyword(4) | satellite navigation |
| Keyword(5) | navigation electronics |
| 1st Author's Name | Takeyasu SAKAI |
| 1st Author's Affiliation | Electronic Navigation Research Institute, Independent Administrative Institution() |
| Date | 2007-07-27 |
| Paper # | SANE2007-55 |
| Volume (vol) | vol.107 |
| Number (no) | 169 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |