SE8900957D0 - PROCEDURE AND DEVICE - Google Patents
PROCEDURE AND DEVICEInfo
- Publication number
- SE8900957D0 SE8900957D0 SE8900957A SE8900957A SE8900957D0 SE 8900957 D0 SE8900957 D0 SE 8900957D0 SE 8900957 A SE8900957 A SE 8900957A SE 8900957 A SE8900957 A SE 8900957A SE 8900957 D0 SE8900957 D0 SE 8900957D0
- Authority
- SE
- Sweden
- Prior art keywords
- sensors
- signals
- energy
- computation
- respect
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000004807 localization Effects 0.000 abstract 2
- 230000005291 magnetic effect Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/38—Processing data, e.g. for analysis, for interpretation, for correction
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Electromagnetism (AREA)
- Measuring Magnetic Variables (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A passive method is provided for detecting, localizing and identifying magnetic objects moving with respect to one or more magnetometric sensors M1, M2, wherein the signals) from the sensors after filtering are subjected to analytic projection using basis signals (figure 2B) representative of the dipolar or quadripolar signals. Computation of an energy criterion with respect to total energy or the energy of the noise present makes it possible to provide a detection signal, the maximum value of the criterion giving localization of the object, the relative speed of the object and of the sensors. Use of two sensors allows complete localization of the object and computation of its magnetic moments. The basis signals are numerical values at discrete points of a coordinate system D, E defined by the sensors, the object and their relative motions (figure 3). The object may be minerals or a ferromagnetic body for example.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8803852A FR2778746A1 (en) | 1988-03-22 | 1988-03-22 | Detection, location and identification of magnetic objects, using transducer in relative motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE8900957D0 true SE8900957D0 (en) | 1989-03-17 |
Family
ID=9364595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8900957A SE8900957D0 (en) | 1988-03-22 | 1989-03-17 | PROCEDURE AND DEVICE |
Country Status (4)
| Country | Link |
|---|---|
| FR (1) | FR2778746A1 (en) |
| GB (1) | GB2469433B (en) |
| IT (1) | IT8967193A0 (en) |
| SE (1) | SE8900957D0 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926625B (en) * | 2014-04-18 | 2016-09-14 | 哈尔滨工程大学 | One utilizes geomagnetic total field to the remote localization method of magnetic target with high precision under water |
| GB201911009D0 (en) | 2019-08-01 | 2019-09-18 | Matrasens Ltd | Ferrmagnetic Sensing |
| CN114547830B (en) * | 2020-11-25 | 2023-07-04 | 中国船舶重工集团公司第七六0研究所 | Underwater target detection and positioning method based on grassland wolf jump tracking mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4710708A (en) * | 1981-04-27 | 1987-12-01 | Develco | Method and apparatus employing received independent magnetic field components of a transmitted alternating magnetic field for determining location |
-
1988
- 1988-03-22 FR FR8803852A patent/FR2778746A1/en active Pending
-
1989
- 1989-03-15 GB GB8905899A patent/GB2469433B/en not_active Expired - Lifetime
- 1989-03-17 SE SE8900957A patent/SE8900957D0/en unknown
- 1989-03-21 IT IT8967193A patent/IT8967193A0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2778746A1 (en) | 1999-11-19 |
| GB2469433B (en) | 2011-03-16 |
| GB2469433A (en) | 2010-10-20 |
| IT8967193A0 (en) | 1989-03-21 |
| GB8905899D0 (en) | 2010-02-24 |
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