| Paper Abstract and Keywords |
| Presentation |
2005-07-29 13:50
An Investigation of Local-Scale Spatial Gradient of Ionospheric Delay on GBAS
Takayuki Yoshihara, Naoki Fujii, Sayaka Wakabayashi (ENRI), Akinori Saito (Kyoto Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
GBAS (Ground-Based Augmentation System) is a system based on the differential GPS technique for aircraft precision approach and landing near and at the airport using C/A pseudorange. In general, ionospheric delay at user receivers will be removed simultaneously with the other error sources using differential correction dataset that is transmitted from a ground segment of GBAS. However, it is pointed out that a large spatial gradient of ionospheric delay between ground GPS monitoring station and aircraft might produce significant vertical positioning error in aircraft side through "the carrier smoothing processing". Therefore, the ionospheric delay gradient is now a major integrity risk for GBAS because it must protect any users within its service area anytime from positioning errors greater than a certain threshold. Therefore, we need to estimate local-scale spatial and temporal variation of ionospheric delay exactly.
This paper presents results from an investigation of ionospheric delay that might influence GBAS especially with a focus to local-scale spatial gradient using the nation-wide dense GPS network in Japan (GEONET; GPS earth observation network), which currently consists of about 1,000 GPS stations with a typical separation of 20 km. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
GPS / GNSS / Landing system / Ionosphere / Propagation Delay / Aviation / Navigation / Kinematic positioning |
| Reference Info. |
IEICE Tech. Rep., vol. 105, no. 218, SANE2005-42, pp. 13-18, July 2005. |
| Paper # |
SANE2005-42 |
| Date of Issue |
2005-07-22 (SANE) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
SANE |
| Conference Date |
2005-07-29 - 2005-07-29 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Electric Navigation Research Institute |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Navigation, Trafic controle and General |
| Paper Information |
| Registration To |
SANE |
| Conference Code |
2005-07-SANE |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
An Investigation of Local-Scale Spatial Gradient of Ionospheric Delay on GBAS |
| Sub Title (in English) |
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| Keyword(1) |
GPS |
| Keyword(2) |
GNSS |
| Keyword(3) |
Landing system |
| Keyword(4) |
Ionosphere |
| Keyword(5) |
Propagation Delay |
| Keyword(6) |
Aviation |
| Keyword(7) |
Navigation |
| Keyword(8) |
Kinematic positioning |
| 1st Author's Name |
Takayuki Yoshihara |
| 1st Author's Affiliation |
Electronic Navigation Research Institute (ENRI) |
| 2nd Author's Name |
Naoki Fujii |
| 2nd Author's Affiliation |
Electronic Navigation Research Institute (ENRI) |
| 3rd Author's Name |
Sayaka Wakabayashi |
| 3rd Author's Affiliation |
Electronic Navigation Research Institute (ENRI) |
| 4th Author's Name |
Akinori Saito |
| 4th Author's Affiliation |
Kyoto University (Kyoto Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2005-07-29 13:50:00 |
| Presentation Time |
25 minutes |
| Registration for |
SANE |
| Paper # |
SANE2005-42 |
| Volume (vol) |
vol.105 |
| Number (no) |
no.218 |
| Page |
pp.13-18 |
| #Pages |
6 |
| Date of Issue |
2005-07-22 (SANE) |