CN102282607B - Acoustic markers - Google Patents
Acoustic markers Download PDFInfo
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- CN102282607B CN102282607B CN2010800044762A CN201080004476A CN102282607B CN 102282607 B CN102282607 B CN 102282607B CN 2010800044762 A CN2010800044762 A CN 2010800044762A CN 201080004476 A CN201080004476 A CN 201080004476A CN 102282607 B CN102282607 B CN 102282607B
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
- G10K11/205—Reflecting arrangements for underwater use
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
-
- 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
- G01S1/72—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 ultrasonic, sonic or infrasonic waves
- G01S1/76—Systems for determining direction or position line
- G01S1/82—Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Radar, Positioning & Navigation (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Sensing (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Building Environments (AREA)
Abstract
An acoustic reflector is described comprising a shell around a core, in which portions of the shell are capable of transmitting acoustic waves incident on the shell into the core to be focused and reflected from an area of the shell located opposite to the area of incidence of the acoustic waves to provide a reflected acoustic signal output from the reflector. Incident acoustic radiation will be differentially reflected depending on the portion of the reflector on which the incident acoustic radiation impinges.
Description
WO2006/075167 and WO2009/122184 (both are that U.K. Ministry of Defence applies for and incorporate this paper into way of reference) have described sound reflector especially, and this sound reflector can use to indicate submerged structure, object or geologic feature in many ways.
The sound reflector that comprises housing and core has been described in these applications; Said housing is around core; And can will be incident on acoustic wave transmission on this surface of shell in the core be focused and quilt from housing and the regional reflex incident area relative position; Thereby the reflected sound signal output from reverberator is provided; Its middle shell is confirmed with respect to core that size makes and is incident on that a part of sound wave on the housing wall is coupled in the housing and is directed in housing around the periphery of housing; Thereby then by radiation again to combine longways mutually to provide the reflected sound signal of enhancing to export with said reflected sound signal output, wherein the SVEL in the core is that 840 meters of per seconds are to 1500 meters of per seconds.
Yet this reverberator is omnidirectional normally, and can provide on a small quantity about the certain reflector, its environment or the acoustic wave source that the relate to information with respect to the relative position of reverberator.
According to the present invention; A kind of sound reflector comprises the housing around core; The acoustic wave transmission that at least a portion of said housing can will be incident on the said housing arrives in the said core; To be focused and by from regional reflex said housing and incident area relative position said sound wave; Thereby provide from the output of the reflected sound signal of said reverberator, said sound reflector is characterised in that, differentially reflects said incident sound radiation according to the difference of the part of the said reverberator that the incident sound radiation impacted; And said reverberator is the form around the rotary body of central axis, and said rotary body is selected from the group that comprises right cylinder, right cone, ovoid or spheroid; Under the situation that is spheroid, the thickness that said housing has the part that is covered with acoustical material or said housing changes.
In one embodiment; Said sound reflector has elastic body core material and housing; Said housing is confirmed size with respect to said core; Make a part of sound wave on the part be incident on said housing be coupled in the said housing and in said housing, be directed around the periphery of said housing, then by radiation again to combine longways mutually to export with the reflected sound signal that enhancing is provided with said reflected sound signal output.
In another embodiment; Said housing is confirmed size with respect to said core; Make the part of the sound wave at least a portion be incident on said housing be coupled in the said housing wall and in said housing wall, be directed around the periphery of said housing, then by radiation again to combine longways mutually to export with the acoustical signal that enhancing is provided with said reflected sound signal output.
In another embodiment; Said sound reflector comprises housing and core; Said housing is around said core; And the acoustic wave transmission that said housing can will be incident on this surface of shell arrives in the said core; Being focused and by from said housing and the regional reflex incident area relative position, thereby the reflected sound signal output from said reverberator is provided, wherein said housing is confirmed size with respect to said core; Make and to be incident on that a part of sound wave on the housing wall is coupled in the said housing and in said housing, to be directed around the periphery of said housing; Thereby then by radiation again combining longways mutually to provide the reflected sound signal of enhancing to export with said reflected sound signal output, the ratio of the ripple transmission speed in the ripple transmission speed in the wherein said core and the said housing is in the scope of about 3: 1 to 3.2: 1 or its harmonic wave, in " 3: 1 " and " 3.2: 1 " are also included within.
The said core of said sound reflector can be formed by one deck or more multi-concentric solid material.In another embodiment, said core has a plurality of material layers parallel, that have different compression velocities of wave.
In another embodiment, the part on the surface of said housing is covered by acoustical material, said acoustical material will absorb said reverberator otherwise with the reflection frequency under incident sound.
If said sound reflector is a right cylinder, then acoustical material can be with the arranged in form of the parallel strip of the central axis that is parallel to said right cylinder on the surface of said right cylinder.The rotation of said right cylinder will provide the width of bar and the reflective sound wave characteristic of interval and rotational speed.
If said sound reflector is a spheroid, then said acoustical material is arranged on the said spherome surface by segmentation.
Said core can be made up of a kind of or more kinds of elastomeric material, and through in the different layers of said core, having different elasticity body material, the physical behavio(u)r of the said core in the zones of different will be different for different audio frequencies.Therefore the some parts of said core can and transmit this sound wave in response to the sound wave under a frequency; This sound wave will combine with a part of of identical ripple who is transmitted around said housing mutually longways; But other part of said core will be transmitted ripple as follows; That is, this ripple will be under same frequency and a part of phase of wave that has been transmitted around the said housing wall ground recombination that disappears, thereby obtains less reflection or do not obtain reflection.Thus it is clear that, frequency through changing acoustical signal and the direction between acoustic wave source and the said reverberator, reflected signal and the information about the spatial relationship between said signal source and the reverberator can be provided by its frequency that obtains reflected signal.
The suitable material that is used for said core can comprise silicon rubber, such as RTV12 or RTV655 silicon rubber.In this case, said housing can be made up of rigid material.Can be steel, fill polyamide or glass-filled nylon like GRP (GRP) or glass.Yet under the situation of more recently reverberator; When being metal shell; Core material can be a metal; As long as the ratio of ripple transmission speed in the said core and the ripple transmission speed in the said housing is in the scope of about 3: 1 to 3.2: 1 or its harmonic wave, " 3: 1 " or " 3.2: 1 " are included.
In an embodiment of the invention, said sound reflector is so shaped that the incident acoustic wave of impact on the part on surface will be scattered and be not reflected.Right cone is an instance of this shape; Pointing to most advanced and sophisticated sound wave is scattered; The sound wave that points to base portion will be by scattering simply, near the inclined side of the said awl of said tip and said bottom scattering is taking place equally, yet the supermedial incident acoustic wave that impacts in said inclined side will be reflected.Avette will acting in a similar manner.
Device of the present invention can be as concentrator marker with the specific direction of indication near immersed body, to help towards the final navigation of object or so that directional information to be provided.As an example, valve can be used said reverberator mark of the present invention under water.Generally speaking the pipeline that is connected with said valve can use the omni-directional reflector mark to indicate the position in its submersible entry.Be attached to the direction reverberator of said valve owing to can be used to indicate in the submersible entry from it safely near the correct direction of said valve.
The Another application of device of the present invention provides a kind of " beacon " under water; If can rotatably be installed and be provided with power or be equipped with fin in ocean current along the reverberator of one or more specific direction reflected sound signals so that it is rotated, when then said reverberator is inquired on by acoustics with the reflected impulse signal.The position of rotational speed or absorbing material will give the reflected sound signal concrete pulse characteristics, can discern relevant reverberator through said concrete pulse characteristics.Can be used for providing positional information like this characteristic " in the beacon ".
Another application of the invention is underway or the place of path between the mark fixed object (such as wrecked ship or steep cliff) under water.Said reverberator can be different from the characteristic at opposite side in the characteristic of a side of said passage, so that serve as red light and green light on the buoy of mark submarine canyon in a similar manner.
To illustrate and describe the present invention now, wherein:
Fig. 1 illustrates the principle that is used for a kind of sound reflector of the present invention;
Fig. 2 is the indicative icon through the follow-on xsect that is used for a kind of sound reflector of the present invention, the figure shows some acoustic path through the reverberator core;
Fig. 3 is target strength and the curve map of frequency that is used for two different reverberators of type shown in Figure 2, the figure shows the influence of the housing wall of different-thickness to frequency response;
Fig. 4 shows the spherical reflector that has the reflection exclusion area according to of the present invention;
Fig. 5 and 6 illustrates to be mounted to and can rotate and the similar spherical reflector of the pulse of cremasteric reflex acoustical signal when being inquired by the narrow beam sound source;
Fig. 7 illustrates according to another spherical reflector of the present invention;
Fig. 8 illustrates according to cylindrical reflector of the present invention; And
Fig. 9 illustrates according to another cylindrical reflector of the present invention, and this cylindrical reflector is designed to surface portion reflected sound signal under different frequency of impacting according to acoustical signal.
In Fig. 1, sound reflector 10 comprises spherical shell 12.Housing 12 surrounds core 16.
Yet, will understand like the reader, other combination that can materials used is as long as housing and core come relative to each other definite size according to the wave propagation characteristic of material therefor.
Be incident on the housing 12 from the incident acoustic wave 18 of sound source (not shown) transmission.In the high place of incident angle, most of sound wave 18 is transmitted in the core 16 through housing wall 14.When sound wave 18 passed core 16 and advances, they were reflected, thereby are focused on the opposite side 20 of housing, and sound wave 18 is reflected back toward from this opposite side 20 along same paths as reflected sound signal output 22.Yet in the less place of incident angle, at 24 places, coupled zone of housing, that is, at the angle place enough little with respect to housing, it is interior so that housing ripple 26 to be provided that a part of incident wave 18 is coupled to wall 14, and this housing ripple 26 is directed in wall 14 around the periphery of housing 12.
Form the material of housing 12 and core 16 and the relative size of housing and core and confirmed in advance, make the transmission time of housing ripple 26 identical with the transmission time of the inner echo that focuses on geometrically (being reflected sound signal output 22).Therefore, be homophase each other by the effect of the housing ripple of radiation again and the output of reflected sound signal, therefore under the frequency of target, combine longways mutually to export (that is high target strength) with the reflected sound signal that enhancing is provided.That is to say; For spherical acoustic reflector, the periphery of housing is a path, therefore must confirm size according to the transmission speed characteristic separately of housing and core; Make in housing, to form the resonance standing wave, this resonance standing wave is exported homophase to combine longways mutually with it with the reflected sound signal.
Preferably, the single solid material of velocity of wave constitutes core between the 840m/s to 1300m/s by having.Alternatively, core can comprise two-layer or multiple layers of different materials more, and for the sound wave of the frequency of special selection, these materials will provide the more effective focusing of incident wave and/or the low decay in material, thereby cause stronger output signal generally.Yet naturally, expection is made under the situation of layering core complicacy and cost will be bigger.Core by situation two-layer or that more multiple layers of different materials forms under, any material or two kinds of materials can have the velocity of wave that reaches to 1500m/s.
In order to be suitable for using reflector arrangement of the present invention, core material must make it can demonstrate velocity of wave within the required range and do not suffer high acoustic energy absorption.Core can be made up of elastomeric material, and silicones for example is particularly from RTV12 or the RTV655 silicon rubber or the Alsil 14401 peroxide cure silicon rubber of Beyer Co., Ltd (Bayer).
Housing can be made up of rigid material; For example; Be GRP (GRP) material; Be in particular the glass-filled nylon of filling semiaromatic polyamide composition such as 50% glass-filled nylon 66, " Zytel "
-33% glass-reinforced nylon or 40% glass; Perhaps be steel, and can be sized to make its thickness approximately be core radius 1/10th.Yet, the person skilled in the art will easily understand with respect to be used for the derivation of the suitable relation between these parameters of characteristic of material of core and housing.
The reader should be appreciated that the various combination that can use solid core and stiff case material, provides the housing ripple of exporting homophase with the reflected sound signal so that their combinations longways mutually as long as the size of core and housing is determined to be.
Referring to Fig. 2, the another kind that the figure shows the reverberator of Fig. 1 improves.Sound reflector 10 comprises spherical shell 12.Housing 12 surrounds core 16.Housing 12 is made up of the rigid material such as GRP (GRP) material or steel.Core 16 is by constituting such as elastomeric solid material.
For the low zone of incident angle of the incident acoustic wave of housing, a part of incident wave 18 is coupled in the housing 12 and produces elastic waves 26, and this elastic wave 26 is directed in housing 12 around the periphery of housing 12.Under the relative size of the material that forms housing 12 and core 16 and housing and core is confirmed to make identical situation of transmission time of the echo (19,19 ') of focusing geometrically of transmission time and inside of housing ripple 26 in advance; Pass the elastic wave and the reflected sound signal of housing wall and export homophase each other; Therefore under target frequency, combine reflected sound signal output 22 (that is strong target response) mutually longways so that another enhancing to be provided.
Fig. 3 shows the spectral response that is used for two different reverberators; These two different reverberators have and the identical core of the reverberator that is used for Fig. 2 and the outer radius of housing character and 210mm; But the ratio of its inner radial and outer radius has different value (0.942 (thick line) and 0.838 (fine rule) are corresponding with the thickness of shell of 12mm and 34mm respectively).As visible from Fig. 3, the reverberator with different housings thickness causes reverberator to have fairly obvious different spectrum response.Can obtain another kind of modification through the inner core of change reverberator and/or the material character of shell body.
In Fig. 4, the sound reflector 10 of kind shown in Figure 2 comprises the spheroid of the core 16 that has housing as shown in Figure 2 12 and processed by resilient material.The Outboard Sections 25 of housing crust is covered with acoustical material 28.This material can be a scope from any to such as the multiple acoustical material of the more advanced material that is used for applying submarine of polystyrene foam, syntactic foam and rubber.Between the section of acoustical material 28, limit the slit or the window 29 that are arranged in housing, as said with reference to Fig. 1 and 2, through this slit or window 29, incident sound signal 18 will be transmitted to core 16 and center on housing itself.Between window 29, because acoustical material 28 makes part 25 intercept the incident sound signal basically, therefore the signal reflex of directed section 25 will not take place.
In Fig. 5, the device of Fig. 4 has as rule section 28 and is arranged in the lip-deep sound reflection material of reverberator and motor 30 rotations that utilization is connected to its central axis 32.Section 28 is around central axis 32.In this case,, then will cause rotation if narrow beam sound wave 18 impacts on reverberator, from reverberator 10 obtain intermittently or " flicker " acoustic reflection ripple 22.The rotational speed of the size of slit or window 29 and reverberator 10 and the repetition frequency of sonar characterize the character (identical with the mode of flashing light in the beacon) of emitting sound wave 22.If obviously the speed of rotation and the repetition frequency of sonar are synchronous, then will not have what reflection.Flicker rate can be used for discerning relevant concrete reverberator.
Fig. 6 illustrates the device of the figure that is similar to Fig. 5, but under the situation of this Fig. 6, reverberator is rotatably installed on the pivot 36.Be installed on the central axis and still work through undercurrent 38 so that reverberator rotates with pivot 36 relative fins 34.This device can be used to orientation, but the variation of flow velocity possibly make the correct identification less reliable of relevant reverberator.On the contrary, this device can be used to provide the information about flow velocity, particularly when these flow velocitys to action under water or safety when most important.
In Fig. 7, through reverberator 10 being constructed with the output that the housing 12 that is made up of the thickness that changes obtains to be similar to the device of Fig. 4.In this case, housing 12 has the zone 34,36,38 of three different-thickness, and these zones are set at (74 and 74 ', 76 and 76 ', 78 and 78 ') around the enclosure interior with relative right mode.This causes depending on the different spectrum behavior (see figure 3)s of the part that incident acoustic wave affacted of housing.Zone 74 blocking parts that can form for example to some frequency, however it will be a window for other frequencies, and other zone is similar.Therefore visible, there is the reverberator of reflection in the different piece that can construct its middle shell to certain frequency.Through with the acoustic waveform of wide bandwidth inquiry reverberator, the sound that is reflected will be the characteristic in zone of the housing of sonic impinging.Alternatively, through understanding the trizonal response frequency of this reverberator, and combine with narrow bandwidth signal, whether the existence of response will indicate the relative position and the orientation in reverberator and acoustical signal source.Utilize narrow steerable acoustic beam, handle acoustic beam and considerable relative position information will be provided to obtain the necessary angle of response.
In Fig. 8, sound reflector 10 comprises right cylinder 80.This post is mounted to motor 30 on the axle line 32 therein.Post itself comprises cylindrical shell 12 and core 16.Have vertical acoustical material bar 28 of series of parallel on the outside surface of housing 12, each bar also is parallel to central axis.This material is an identical type with the material that possibly be used for the embodiment of Fig. 4.Between acoustical material bar 28, in housing 12, form slit or window 29, can reflect incident acoustic wave through this slit or window 29.
In Fig. 9, sound reflector 10 comprises the right cylinder 80 with housing 12.In this case, core 16 comprises layer of elastomer material 92,94 and 96.Elastomeric material in the layer has different density.The layer 94 of axis that extends through post is with some audio frequency of a transmission and other audio frequency of not transmission.To see that the incident acoustic wave that impacts housing 12 and zones layer 94 adjacency will be reflected by post when the frequency following time that is in layer 94 response as previously mentioned.Yet the sound wave under other frequency will not be reflected.Likewise, a sound wave that impacts in the zone that is positioned at layer 92 and 96 outside of housing can be reflected or not be reflected, and this depends on that these layers are to the response of correlated frequency and depend on whether sound wave can pass mf band 94.It is thus clear that the elastomeric density through in the core 16 that changes different reverberators can obtain very unique response.Through layer 92 and the 96 outside zone that are positioned at from housing are provided with weak relatively reflection, still the zone from the surrounding layer 94 of housing is provided with very powerful reflection, this reverberator can provide guidance information once more.Through providing sensing whether sound source hope with reverberator or the indication of not pointing to, this to underwater navigation with directed particularly useful.If, then can obtain in fact to be similar to the sound system of optics landing light based on three different types of reflections that the shell area of inquiring occurs.
Claims (11)
1. sound reflector, said sound reflector comprises:
Housing (12) around core (16); The sound wave (18) that at least a portion of said housing (29) can will be incident on the said housing is transmitted in the said core; To be focused and to be reflected by zone (20) from said housing and incident area relative position said sound wave; Thereby the reflected sound signal output (22) from said reverberator is provided; Said sound reflector is characterised in that, the difference of the said part of the said reverberator that is impacted according to incident sound radiation (18) and differentially reflect said incident sound radiation; And said reverberator is the form around the rotary body of central axis, and said rotary body is selected from the group that comprises right cylinder, right cone, ovoid or spheroid; Under the situation that is spheroid, the thickness that said housing has the part that is covered with acoustical material or said housing changes.
2. sound reflector according to claim 1; It is characterized in that; This sound reflector has core; Said core is made up of elastomeric material; And said housing (12) is by being confirmed size with respect to said core, make the part of the said sound wave (18) on the some parts that is incident on said housing (12) be coupled in the said housing and in said housing, be directed around the periphery of said housing, then by radiation again to combine longways mutually to export (22) with the reflected sound signal that enhancing is provided with said reflected sound signal output.
3. sound reflector according to claim 1 and 2; It is characterized in that; Said sound reflector comprises housing and core, and said housing is around said core, and the acoustic wave transmission that said housing can will be incident on this surface of shell arrives in the said core; To be focused and by from said housing and the regional reflex incident area relative position; Thereby provide from the output of the reflected sound signal of said reverberator, wherein said housing is confirmed size with respect to said core, makes a part that is incident on the said sound wave on the housing wall be coupled in the said housing and is directed in said housing around the periphery of said housing; Then by radiation again with said reflected sound signal output combination longways mutually; Thereby the reflected sound signal output of enhancing is provided, and the ratio of the ripple transmission speed in the ripple transmission speed in the wherein said core and the said housing is in the scope of 3:1 to 3.2:1 or its multiple, in " 3:1 " and " 3.2:1 " is also included within.
4. sound reflector according to claim 1, wherein, the some parts on the surface of said housing (12) is covered by acoustical material (28), and said acoustical material is absorbed in said reverberator otherwise with the incident sound under the frequency of reflection.
5. sound reflector according to claim 4 is characterized in that said acoustical material is a syntactic foam.
6. sound reflector according to claim 4, this sound reflector comprises right cylinder, and wherein said acoustical material is arranged on the surface of said post by the mode with parallel strip, and these are parallel to the central axis of said post.
7. sound reflector according to claim 1, this sound reflector are arranged to through analyzing reflected signal height or angle information are provided.
8. sound reflector according to claim 1 is characterized in that said reverberator is rotatably installed on the central axis.
9. sound reflector according to claim 8, wherein, said sound reflector is provided with motor so that it rotates around said axis.
10. sound reflector according to claim 8, wherein, said sound reflector is provided with fin.
11. sound reflector according to claim 8, wherein, said reflected signal is the characteristic of placing the environment of said reverberator.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0900668.5 | 2009-01-16 | ||
| GBGB0900668.5A GB0900668D0 (en) | 2009-01-16 | 2009-01-16 | Acoustic markers |
| PCT/GB2010/050058 WO2010082062A2 (en) | 2009-01-16 | 2010-01-15 | Acoustic markers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102282607A CN102282607A (en) | 2011-12-14 |
| CN102282607B true CN102282607B (en) | 2012-11-21 |
Family
ID=40433382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800044762A Expired - Fee Related CN102282607B (en) | 2009-01-16 | 2010-01-15 | Acoustic markers |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP2387784A2 (en) |
| JP (1) | JP2012515364A (en) |
| CN (1) | CN102282607B (en) |
| AU (1) | AU2010205518A1 (en) |
| BR (1) | BRPI1007503A2 (en) |
| CA (1) | CA2748884A1 (en) |
| GB (2) | GB0900668D0 (en) |
| RU (1) | RU2011133882A (en) |
| SG (1) | SG172994A1 (en) |
| WO (1) | WO2010082062A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2484604B (en) * | 2009-07-29 | 2012-08-29 | Subsea Asset Location Tech Ltd | Scouring monitor |
| CN109599089A (en) * | 2018-11-21 | 2019-04-09 | 中国人民解放军海军工程大学 | A kind of underwater sound corner reflector with foam layer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599747A (en) * | 1968-12-16 | 1971-08-17 | Palle G Hansen | Spherical reflector |
| US5822272A (en) * | 1997-08-13 | 1998-10-13 | The United States Of America As Represented By The Secretary Of The Navy | Concentric fluid acoustic transponder |
| GB2437016A (en) * | 2005-01-14 | 2007-10-10 | Secr Defence | An acoustic reflector |
| CN101103392A (en) * | 2005-01-14 | 2008-01-09 | 英国国防部 | acoustic reflector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2855207C2 (en) * | 1978-12-21 | 1980-04-10 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Sonar reflector |
| WO2007093002A1 (en) * | 2006-02-16 | 2007-08-23 | Ecobuoy Pty Ltd | Sonar accessory & method |
| AU2009233505A1 (en) | 2008-04-02 | 2009-10-08 | The Secretary Of State For Defence | Tunable acoustic reflector |
-
2009
- 2009-01-16 GB GBGB0900668.5A patent/GB0900668D0/en not_active Ceased
-
2010
- 2010-01-15 GB GB1110673.9A patent/GB2477711B/en not_active Expired - Fee Related
- 2010-01-15 AU AU2010205518A patent/AU2010205518A1/en not_active Abandoned
- 2010-01-15 CN CN2010800044762A patent/CN102282607B/en not_active Expired - Fee Related
- 2010-01-15 CA CA2748884A patent/CA2748884A1/en not_active Abandoned
- 2010-01-15 EP EP10702161A patent/EP2387784A2/en not_active Withdrawn
- 2010-01-15 WO PCT/GB2010/050058 patent/WO2010082062A2/en active Application Filing
- 2010-01-15 BR BRPI1007503A patent/BRPI1007503A2/en not_active Application Discontinuation
- 2010-01-15 SG SG2011051141A patent/SG172994A1/en unknown
- 2010-01-15 JP JP2011545801A patent/JP2012515364A/en active Pending
- 2010-01-15 RU RU2011133882/28A patent/RU2011133882A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3599747A (en) * | 1968-12-16 | 1971-08-17 | Palle G Hansen | Spherical reflector |
| US5822272A (en) * | 1997-08-13 | 1998-10-13 | The United States Of America As Represented By The Secretary Of The Navy | Concentric fluid acoustic transponder |
| GB2437016A (en) * | 2005-01-14 | 2007-10-10 | Secr Defence | An acoustic reflector |
| CN101103392A (en) * | 2005-01-14 | 2008-01-09 | 英国国防部 | acoustic reflector |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0900668D0 (en) | 2009-02-25 |
| AU2010205518A1 (en) | 2011-07-21 |
| RU2011133882A (en) | 2013-02-27 |
| CA2748884A1 (en) | 2010-07-22 |
| BRPI1007503A2 (en) | 2016-02-16 |
| SG172994A1 (en) | 2011-08-29 |
| CN102282607A (en) | 2011-12-14 |
| JP2012515364A (en) | 2012-07-05 |
| GB2477711A (en) | 2011-08-10 |
| EP2387784A2 (en) | 2011-11-23 |
| GB201110673D0 (en) | 2011-08-10 |
| WO2010082062A2 (en) | 2010-07-22 |
| WO2010082062A3 (en) | 2011-03-24 |
| GB2477711B (en) | 2012-12-12 |
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