1997 Fiscal Year Final Research Report Summary
Study on the Positioning Accuracy Improvement of North Pacific LORAN-C Chain
| Project/Area Number |
08651093
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
船舶工学
|
|---|
| Research Institution | Tokyo University of Fisheries |
|---|
Principal Investigator |
KAKIHARA Toshiharu Tokyo University of Fisheries, Department of Marine Science and Technology, Associate Professor, 水産学部, 助教授 (50114913)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MIYAMOTO Yoshinori Tokyo University of Fisheries, Department of Marine Science and Technology, Assi, 水産学部, 助手 (80251685)
|
|---|
| Project Period (FY) |
1996 – 1997
|
| Keywords | LORAN-C / Radio Navigation System / Time Difference / Positioning Accuracy / Differential LORAN-C / Hyperbolic Navigation / Secondary Factor (SF) / Additional SF |
|---|
| Research Abstract |
(1996)
LOP (Line of Position) distortion of LORAN-C (Long Rang Navigation System-C) Northwest Pacific Chain (8930 chain) was investigated at Sagami Bay in 1996.
As the results of observation, the high repetition accuracy of 0.1 mu s of LOP was observed athe fixed point, and it was cleared that the large local distortion, which is caused by long land propagation and it attains to some hundred meters, are existing in Y and Z station's LOP at Sagami Bay.
(1997)
To improve the positioning accuracy of LORN-C,the differential correction method is proposed and tried at Tateyama Bay in 1997. The positioning error decreased to 1/10 - 1/20 values by using the correction. From this results, the efficiency of differential method was verificated.
|
