GB1359298A - Integrated navigation systems for ships - Google Patents
Integrated navigation systems for shipsInfo
- Publication number
- GB1359298A GB1359298A GB4171570A GB4171570A GB1359298A GB 1359298 A GB1359298 A GB 1359298A GB 4171570 A GB4171570 A GB 4171570A GB 4171570 A GB4171570 A GB 4171570A GB 1359298 A GB1359298 A GB 1359298A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sensors
- vessel
- error
- sensor
- output
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G3/00—Traffic control systems for marine craft
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Ocean & Marine Engineering (AREA)
- Navigation (AREA)
Abstract
1359298 Radio navigation ESSO RESEARCH & ENG CO 20 Aug 1971 [1 Sept 1970] 41715/70 Heading H4D A shipborne navigation system has a number of sensors giving position information and computer means for determining the best estimate of position by considering appropriate sensors. The system determines the error in the estimated position from a knowledge of the sensor accuracies and decides if the error is acceptable for the general area in which the vessel is located, e.g. a greater accuracy is preferred if the vessel is in coastal waters than oceanic. In addition the system decides if the error is acceptable for the vessel to proceed to the next area of the voyage. The system utilizes a computer performing the algorithm of Fig. 1. The availability of sensors is determined by the vessel's position, e.g. the oceanic sensors may not be suitable or available for coastal areas. The computer decides at 3 which of the available sensors is most accurate and reads the output. At 5 the availability of other comparably accurate sensors is determined. If there are any available then the most accurate one is read at 7. This process continues until no more comparably accurate sensors are available, in which case the readings are combined at 9 and the vessel's position given an initial estimate at 11. However, the initial estimate may indicate that one of the sensors is unsuitable for the vessel's general area, e.g. if in coastal waters and an oceanic sensor is giving an output. If so, that sensor is discounted at 15 and the whole process repeated from 5. Eventually, all such spurious sensors are discounted and the output from each used sensor compared at 17 to the combined or averaged outputs at 11. If the output of any sensor is seriously different from the output at 11 then that sensor is in error, a warning is given at 18 and the sensor discarded. The whole process is repeated until all erroneous sensors are discarded and the output at 11 gives the best estimated position. From a knowledge of the accuracies of the used sensors the error E 0 in position is determined at 19. The output from 11 is used at 21 to determine the present phase P 1 of the voyage, i.e. the vessel's general area. The error E 1 in position acceptable in phase P 1 is determined at 23 and at 25 it is decided if E 0 >E 1 . If so, then an alarm is given at 27 indicating that the vessel's position is not known to sufficient accuracy. In addition, the error in position is displayed. If E 0 < E 1 then the course to be made good is calculated at 28. The next phase P 2 of the voyage is determined at 29 and the error E Z allowable in P 2 determined at 31. If E 0 > E 2 it is not safe to proceed to P 2 and a warning is given at 35. If E 0 < E 2 then the algorithm finishes at 37.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4171570A GB1359298A (en) | 1971-08-20 | 1971-08-20 | Integrated navigation systems for ships |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4171570A GB1359298A (en) | 1971-08-20 | 1971-08-20 | Integrated navigation systems for ships |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1359298A true GB1359298A (en) | 1974-07-10 |
Family
ID=10421030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4171570A Expired GB1359298A (en) | 1971-08-20 | 1971-08-20 | Integrated navigation systems for ships |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1359298A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2392361A1 (en) * | 1976-11-19 | 1978-12-22 | Petroles Cie Francaise | APPROACH AT SEA SIGNALING PROCESS OF PREDETERMINED POINTS AND IMPLEMENTATION DEVICE |
EP0244091A2 (en) * | 1986-04-30 | 1987-11-04 | Honeywell Inc. | Navigation mode selection apparatus |
CN108287509A (en) * | 2018-02-27 | 2018-07-17 | 上海瑞华(集团)有限公司 | A kind of functional parameter automatic dressing system and device of unmanned pure electric vehicle ship |
-
1971
- 1971-08-20 GB GB4171570A patent/GB1359298A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2392361A1 (en) * | 1976-11-19 | 1978-12-22 | Petroles Cie Francaise | APPROACH AT SEA SIGNALING PROCESS OF PREDETERMINED POINTS AND IMPLEMENTATION DEVICE |
EP0244091A2 (en) * | 1986-04-30 | 1987-11-04 | Honeywell Inc. | Navigation mode selection apparatus |
EP0244091A3 (en) * | 1986-04-30 | 1989-07-12 | Honeywell Inc. | Navigation mode selection apparatus |
CN108287509A (en) * | 2018-02-27 | 2018-07-17 | 上海瑞华(集团)有限公司 | A kind of functional parameter automatic dressing system and device of unmanned pure electric vehicle ship |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |