| Presentation | 2023-03-02 Investigation of QZSS Operational Reports: Characteristics of Failure and Maintenance Takeyasu Sakai, Michi Masaki, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The QZSS (Quasi-Zenith Satellite System) has been operating for 4 years since November 2018. The authors investigated NAQU messages which contains QZSS operational information to recognize availability and characteristics of failure and maintenance of ranging function and services as SLAS, CLAS, and DCR. As results, the availability of PNT service of QZS-1 and QZS-3 is at least 94% while other satellites and services operate for more than 99% of time. It becomes clear that all maintenance activities have been completed within scheduled time slot for last 4 years. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | QZSS / availability / NAQU |
| Paper # | SANE2022-103 |
| Date of Issue | 2023-02-23 (SANE) |
| Conference Information | |
| Committee | SANE / SAT |
|---|---|
| Conference Date | 2023/3/2(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Toshifumi Moriyama(Nagasaki Univ.) / Tetsushi Ikegami(Meiji Univ.) |
| Vice Chair | Makoto Tanaka(Tokai Univ.) / Takeshi Amishima(Meiji Univ.) / Masashi Kamei(NHK) / Takana Kaho(Shonan Inst. of Tech.) |
| Secretary | Makoto Tanaka(ENRI) / Takeshi Amishima(Mitsubishi Electric) / Masashi Kamei(NTT) / Takana Kaho(NICT) |
| Assistant | Shang Fang(Univ. of Electro-Comm) / Riichiro Nagareda(KDDI Research) / Yuuki Koizumi(NHK) |
| Paper Information | |
| Registration To | Technical Committee on Space, Aeronautical and Navigational Electronics / Technical Committee on Satellite Telecommunications |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Investigation of QZSS Operational Reports: Characteristics of Failure and Maintenance |
| Sub Title (in English) | |
| Keyword(1) | QZSS |
| Keyword(2) | availability |
| Keyword(3) | NAQU |
| 1st Author's Name | Takeyasu Sakai |
| 1st Author's Affiliation | Electronic Navigation Research Institute(ENRI) |
| 2nd Author's Name | Michi Masaki |
| 2nd Author's Affiliation | Electronic Navigation Research Institute(ENRI) |
| Date | 2023-03-02 |
| Paper # | SANE2022-103 |
| Volume (vol) | vol.122 |
| Number (no) | SANE-408 |
| Page | pp.pp.25-30(SANE), |
| #Pages | 6 |
| Date of Issue | 2023-02-23 (SANE) |