JPS56117110A - Measuring method of position of drifting buoy - Google Patents
Measuring method of position of drifting buoyInfo
- Publication number
- JPS56117110A JPS56117110A JP2100980A JP2100980A JPS56117110A JP S56117110 A JPS56117110 A JP S56117110A JP 2100980 A JP2100980 A JP 2100980A JP 2100980 A JP2100980 A JP 2100980A JP S56117110 A JPS56117110 A JP S56117110A
- Authority
- JP
- Japan
- Prior art keywords
- fixed
- buoy
- photodetecting
- light
- positions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
- G01C3/12—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument with monocular observation at a single point, e.g. coincidence type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
PURPOSE:To measure positions successively and accurately by setting up light sources on two fixed positions with an interval and drifting buoy and measuring the time interval when the light sources of the buoy and one fixed position are detected by means of photodetecting devices in which photodetecting directions are revolved at two fixed positions. CONSTITUTION:Light sources are set up on two fixed points A and B with an interval on land and drifting buoy 4 (point C) and a photodetecting device, which consists of photodetector 8 with photodetecting part on the whole circumference and light penetrating slit 10 which rotates around the periphery at a constant speed, is installed to each fixed point A and B respectively. For example, if the time required for detecting the light from buoy 4 (C) after detecting the light from fixed point B is measured at fixed point A, angle alpha is found from the revolving speed of rotation color 9. Since angle beta can be also measured in the same manner, the position of drifting buoy 4 can be found. Thus, positions can be measured successively and accurately by means of simple device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2100980A JPS56117110A (en) | 1980-02-20 | 1980-02-20 | Measuring method of position of drifting buoy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2100980A JPS56117110A (en) | 1980-02-20 | 1980-02-20 | Measuring method of position of drifting buoy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56117110A true JPS56117110A (en) | 1981-09-14 |
Family
ID=12043060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2100980A Pending JPS56117110A (en) | 1980-02-20 | 1980-02-20 | Measuring method of position of drifting buoy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56117110A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5914082A (en) * | 1982-07-15 | 1984-01-24 | Hajime Enomoto | Device for detecting coordinate |
| JPS61260322A (en) * | 1985-05-10 | 1986-11-18 | ザ・レイトラム・コ−ポレ−シヨン | Positioning system |
| JPS62127682A (en) * | 1985-11-29 | 1987-06-09 | Kajima Corp | Angle detection method and device using laser |
| JPH0346815U (en) * | 1989-09-14 | 1991-04-30 |
-
1980
- 1980-02-20 JP JP2100980A patent/JPS56117110A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5914082A (en) * | 1982-07-15 | 1984-01-24 | Hajime Enomoto | Device for detecting coordinate |
| JPS61260322A (en) * | 1985-05-10 | 1986-11-18 | ザ・レイトラム・コ−ポレ−シヨン | Positioning system |
| JPH0490242U (en) * | 1985-05-10 | 1992-08-06 | ||
| JPS62127682A (en) * | 1985-11-29 | 1987-06-09 | Kajima Corp | Angle detection method and device using laser |
| JPH0411806B2 (en) * | 1985-11-29 | 1992-03-02 | Kajima Corp | |
| JPH0346815U (en) * | 1989-09-14 | 1991-04-30 |
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