CN108919209A - Underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform - Google Patents
Underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform Download PDFInfo
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- CN108919209A CN108919209A CN201810497422.2A CN201810497422A CN108919209A CN 108919209 A CN108919209 A CN 108919209A CN 201810497422 A CN201810497422 A CN 201810497422A CN 108919209 A CN108919209 A CN 108919209A
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- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The present invention relates to Radar Target Scatter characteristic test fields, more particularly, to the test platform of underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics.The test platform, including instrument platform, target suspension arrangement, wave simulator, underwater vertical rotating device, driving equipment and underwater emission platform, instrument platform, target suspension arrangement, wave simulator and driving equipment are arranged on the water surface, and underwater vertical rotating device and underwater emission platform are arranged in underwater；Waterborne target scale model 0~360 ° of rotation of energy hung on target suspension arrangement, underwater vertical rotating device can 0~90 ° of rotation.The test platform considers the influence that the water surface rises and falls to waterborne target radar scattering feature measurement, not only it is capable of measuring waterborne target radar scattering characteristic when big grazing angle, measurement demand when small grazing angle is taken into account, the Electromagnetic Scattering Characteristics for obtaining waterborne target full angle (0~360 ° of horizontal azimuth, 0~90 ° of grazing angle) are capable of measuring.
Description
Technical field
The present invention relates to Radar Target Scatter characteristic test fields, more particularly, to underwater sound analogue measurement waterborne target full-shape
Spend Electromagnetic Scattering Characteristics test platform.
Background technique
Radar wave grazing angle when bank sea radar, shipborne radar are incident on the water surface or aerial target is usually less than 3 °, but
More than the target of incidence when reaching to(for) the radar wave of the transmittings such as spaceborne radar, airborne radar, anti-warship guided missle target seeker Active Radar
Angle is likely larger than 3 °, such as：New generation anti-ship missile generallys use Maneuver Ballistic Trajectory mode, usually with sea skimming close to water surface mesh
Mark, rises to, then diving attack waterborne target again when attacking latter end.For this purpose, water surface mesh when measuring big grazing angle need to be studied
Mark radar scattering characteristic.
Obtaining waterborne target Electromagnetic Scattering Characteristics includes two kinds of approach of theoretical calculation and test, and when theoretical calculation is difficult to accurate
Modeling test environment, to bring calculating error.Currently, there are mainly three types of the methods of test measurement waterborne target scattering properties：
First is that outfield measurement method, required measurement place, target are all difficult to meet, and can only waterborne target build after could
Test cannot provide targeted profile optimization suggestion at the beginning of design for designer, and this method input,
Human and material resources are very big；Second is that microwave dark room method, is the tradition side of current test room measurement waterborne target Electromagnetic Scattering Characteristics
Method, there are the deficiencies of the following aspects, are the work for large scale target as naval vessel, to test equipment first
Frequency requirement is very high, it is difficult to realize, can not followed by construct and bring larger impact to waterborne target Electromagnetic Scattering Characteristics measurement
Fluctuating sea environment, and the infrastructure capital investment of this method is very big；Third is that underwater sound simulation, based on sound wave and electricity
Waterborne target scale model scale model is inverted in by similarity principle of the magnetic wave in target scattering by air-seawater reciprocity
Below approximately level, using the hyperfrequency acoustic signals for meeting similarity principle and optical scattering condition, scale model is irradiated, is obtained
Comprising the target radar returns that water surface interface scattering influences, the scattering properties of waterborne target when the analogue measurement water surface rises and falls.Currently,
The test platform of underwater sound analogue measurement waterborne target Electromagnetic Scattering Characteristics can only meet situation of the grazing angle less than 3 °.
Summary of the invention
In order to solve the above problem, the present invention provides a kind of underwater sound analogue measurement water surface mesh easy to operate, test efficiency is high
Full angle Electromagnetic Scattering Characteristics test platform is marked, which is not only capable of measuring waterborne target scattering spy when big grazing angle
Property, scattering properties measurement demand when small grazing angle is combined, waterborne target scale model full angle (level side is able to achieve
0~360 ° of parallactic angle, 0~90 ° of grazing angle) Electromagnetic Scattering Characteristics underwater sound simulation test.
The technical solution adopted by the present invention is that：A kind of underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test
Platform including the instrument platform for putting instrument and equipment, the target suspension arrangement for hanging waterborne target scale model, is used
In the wave simulator of mimetic surface stormy waves, underwater vertical rotating device, the driving for driving underwater vertical rotating device rotation
Equipment and the underwater emission platform being arranged on vertical rotating device under water, it is characterised in that：The instrument platform, target suspension
Device, wave simulator and driving equipment are arranged on the water surface, the underwater vertical rotating device and the setting of underwater emission platform
In underwater；The waterborne target scale model hung on the target suspension arrangement can in level orientation 360 ° rotation, it is described
Energy converter on underwater emission platform can 360 ° of rotations.
Preferably, the instrument platform includes for putting instrument and equipment and also serving as the platform floor in person works place
With the platform fixed frame for fixed platform bottom plate.
Further, the target suspension arrangement includes hanging bracket bottom plate, dial bottom plate, hanging bracket, level side
Position dial, rotary part, adjusting nut and target hanger bar, the hanging bracket bottom plate are fixed at platform floor two sides
Stringer on, separate target suspension arrangement integrally with instrument platform；The dial bottom plate is pacified by the way that hanging bracket is fixed
On hanging bracket bottom plate, dial bottom plate center is equipped with level orientation dial, and the rotary part lower end passes through
Level orientation dial is connect by adjusting nut with target hanger bar upper end, and target hanger bar lower end is hung with water surface mesh
Mark scale model；Motor driven rotation can be used in rotary part, drives the rotation of waterborne target scale model by target hanger bar,
Pointer on rotary part is corresponding with the angle index of level orientation dial, indicates waterborne target scale model level orientation
Angle.
Further, the hanging bracket lower end is fixed with hanging bracket bottom plate, and upper end passes through the spiral shell in hanging bracket
Line is connect with dial bottom plate, is adjusted two nuts up and down on four foot of dial bottom plate in each hanging bracket, is made dial
Bottom plate keeps horizontal, and the waterborne target scale model waterline for ensuring to be inverted in water is flushed with the water surface, submerged in water
Aerial target and the water surface keep horizontal.
Preferably, the wave simulator includes the fixed frame of fixed setting and the fan that is mounted on fixed frame, it is described
The wind speed and pitch angle of fan are adjustable, for simulating the water surface wave of different wind speed and directions.
Further, the underwater vertical rotating device includes swivel mount, at the top of the two sides of the swivel mount respectively with it is flat
The two sides of platform bottom plate are hinged, are equipped with underwater emission platform among bottom, side be equipped with the dial for being used to indicate rotation angle and
Pointer；The swivel mount bottom side is connected by drawstring with driving equipment, and the driving equipment drives swivel mount by drawstring
Hinge joint around two sides rotates within the scope of 0~90 °.
Further, the swivel mount includes the connection frame and support frame arranged at the bottom that side is arranged in, described
Connection frame setting triangular in shape, support frame as described above are arranged in rectangle, and the top of the connection frame of the setting triangular in shape is hinged on
On platform floor, bottom end is fixedly connected on the short side in the support frame of rectangle setting, and the middle part of support frame as described above is equipped with underwater
The long side of flat pad, support frame as described above is connected by drawstring with driving equipment；The connection frame is equipped with for the oblique of reinforcement
To the support rod of setting, italic is taken to design, the sound wave incident for avoiding underwater transducer from emitting is to support rod, to produce
Raw echo influences test result.
Further, the underwater emission platform includes energy converter steering scale plate, the hair that swivel mount bottom is arranged in
Platform support, adjusting bracket, energy converter mounting rack, laser equipment and energy converter are penetrated, the energy converter turns to scale plate and passes through tune
It saves support level to be arranged on flat pad bracket, the middle part that energy converter turns to scale plate is arranged in the energy converter mounting rack；
The laser equipment is mounted on energy converter mounting rack, compares mould for debugging energy converter and waterborne target contracting on energy converter mounting rack
The centering at type center removes after having debugged, and energy converter is installed on energy converter mounting rack.
Preferably, the driving equipment includes the fixed frame being fixed on the water surface and the volume that is mounted on fixed frame
Raise machine, the hoist engine connect by drawstring with underwater vertical rotating device, for drive underwater vertical rotating device under water
Flat pad, to change the complementary angle that energy converter is incident on waterborne target；Variable speed machine driving can be used, when grazing angle big angle
Fast driving is used when spending variation, test efficiency is improved, uses when grazing angle low-angle adjusts and drive at a slow speed, it is ensured that adjustment essence
Degree.
The beneficial effect that the present invention obtains is：
1, the test platform generates wave using wind apparatus is made, and has fully considered that the water surface rises and falls to waterborne target scattering properties
The influence of measurement provides the experimental condition for more meeting practical marine environment, can analogue measurement water surface mesh in laboratory conditions
Mark Electromagnetic Scattering Characteristics；
2, analog measure waterborne target full angle Electromagnetic Scattering Characteristics, i.e., azimuth of target cover 0~360 °, incidence more than
Angle covers 0~90 °；
3, comprehensive to drive hoist engine using friction speed motor, to drive underwater rotating device and underwater emission platform, save
When, it is laborsaving, accurately control grazing angle；
4, test platform is compact-sized, multiple functional, control convenience, compared to current measurement waterborne target radar scattering characteristic
Other methods it is cheap.
5, structure of the invention design is closed simple, practical, easy to operate, and human and environment is reduced to a great extent to the shadow of test
It rings, the full angle scattering properties of waterborne target when Lidar Equation can be considered with analogue measurement, is had a large promotion value.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the explosive view of target suspension arrangement；
Fig. 3 is the explosive view of underwater emission platform；
Fig. 4 is a kind of specific embodiment of waterborne target scale model；
Fig. 5 is the average distance picture of test；
Fig. 6 is the target distance image of emulation.
Specific embodiment
The present invention will be further explained in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform of the invention,
Including the instrument platform for putting instrument and equipment, the target suspension arrangement for hanging waterborne target scale model 27, it is used for
The wave simulator of mimetic surface stormy waves, underwater vertical rotating device, the driving for driving underwater vertical rotating device to rotate are set
Underwater emission platform standby and being arranged on vertical rotating device under water, instrument platform, target suspension arrangement, wave simulator and drive
Dynamic equipment is arranged on the water surface, and underwater vertical rotating device and underwater emission platform are arranged in underwater；Target suspension arrangement
The waterborne target scale model 27 of upper suspension can in level orientation 360 ° rotation, thus analogue measurement waterborne target scale model
Full angle Electromagnetic Scattering Characteristics.
In the present embodiment, instrument platform includes platform floor 12 and platform fixed frame 11, and platform fixed frame 11 is fixed on survey
In amount driving, upper and lower position can change as needed；Platform floor 12 is fixed by more platform fixed frames 11, it is ensured that it is flat
Surely, securely, platform floor 12 also serves as person works place for putting instrument and equipment.
As shown in connection with fig. 2, in the present embodiment, target suspension arrangement include hanging bracket bottom plate 28, dial bottom plate 21,
Hanging bracket 22, level orientation dial 23, rotary part 24, adjusting nut 25 and target hanger bar 26, hanging bracket bottom plate
28 are fixed on the stringer of 12 side of platform floor, separate target suspension arrangement integrally with instrument platform, avoid by
In the personnel activity on platform floor 12, test result is impacted.Dial bottom plate 21 is fixed by hanging bracket 22
It is mounted on hanging bracket bottom plate 28,21 4 feet of dial bottom plate are supported with hanging bracket 22, at 21 center of dial bottom plate
Equipped with level orientation dial 23,24 lower end of rotary part passes through level orientation dial 23 and passes through adjusting nut 25 and target
The connection of 26 upper end of hanger bar, the fixation of 26 lower end of target hanger bar are hung with waterborne target scale model 27；Motor driven rotating part
Part 24 rotates, and drives the full angle within the scope of 360 ° of waterborne target scale model 27 to rotate by target hanger bar 26, rotating part
Pointer on part 24 is corresponding with the angle index of level orientation dial 23, indicates the current of waterborne target scale model 27
Gyrobearing angle.
In one embodiment, 22 lower end of hanging bracket and hanging bracket bottom plate 28 are fixed, and upper end passes through in hanging bracket
Screw thread is connect with dial bottom plate 21, adjusts two nuts up and down in each hanging bracket 22 of 21 4 foot of dial bottom plate,
Keep 21 holding of dial bottom plate horizontal, the waterborne target scale model waterline for ensuring to be inverted in water is flushed with the water surface, is soaked
Aerial target in water and the water surface do not keep horizontal.
In the present embodiment, wave simulator includes fixed frame 41 and fan 42, and fan 42 is mounted on fixed frame 41, can be with
According to the needs of practical stormy waves, the wind speed and pitch angle of fan 42 are adjusted, to meet different directions, different wind-force (wind speed) stormy waves
Simulation demand.
As shown in connection with fig. 3, in the present embodiment, underwater vertical rotating device includes swivel mount, two lateral roofs of swivel mount
It is hinged with the two sides of platform floor 12 respectively, underwater emission platform is equipped among bottom, side is equipped with and is used to indicate rotation angle
Dial and pointer, convenient for observing, indicating underwater transducer battle array to the grazing angle of waterborne target；Swivel mount bottom side is logical
It crosses drawstring to be connected with driving equipment, driving equipment drives swivel mount around the hinge joint of two sides in 0~90 ° of range by drawstring 7
Interior rotation, with guinea pig wave to the grazing angle within the scope of 0~90 ° of target.
In one embodiment, similar to the structure of swing, the connection frame 31 including being symmetricly set on side (is equivalent to swivel mount
The swing arm of swing) and support frame arranged at the bottom 32 (bottom plate for being equivalent to swing), the setting triangular in shape of connection frame 31, support
Frame 32 is arranged in rectangle, and the top of the connection frame 31 of setting triangular in shape is hinged on platform floor 12, and bottom end is fixedly connected on
On short side in the support frame 32 of rectangle setting, the middle part of support frame 32 is equipped with underwater emission platform, and the long side of support frame 32 is logical
Drawstring 7 is crossed to be connected with driving equipment；Connection frame 31 is equipped with the angularly disposed support rod 33 for reinforcement, and support rod 33 uses
Italic design, can not only increase the structural strength of connection frame 31, but also is avoided that on transmitting sound wave incident to support rod 33 and generates instead
It penetrates, so that leading to the problem of echo influences test result.
In the present embodiment, flat pad includes flat pad bracket 52, energy converter steering scale plate 51, energy converter mounting rack
54, laser equipment and energy converter, flat pad bracket 52 are arranged among 32 bottom of support frame of swivel mount, and energy converter, which turns to, to be carved
Degree plate 51 is horizontally set on flat pad bracket 52 by adjusting bracket 53, and the setting of energy converter mounting rack 54 turns in energy converter
To the middle part of scale plate 51.Before energy converter is installed, first laser equipment is mounted on energy converter mounting rack 54, passes through adjusting bracket
The posture of 53 adjustment laser equipments, makes 27 center of laser equipment beam alignment waterborne target scale model, reaches sound wave alignment mesh
The adjusting purpose at mark center；Laser equipment is unloaded after having debugged, and energy converter is installed on energy converter mounting rack 54, is tested
Test.
In one embodiment, driving equipment includes fixed frame 61 and hoist engine 62, and hoist engine 62 is mounted on fixed frame 61
On, hoist engine 62 is connect by drawstring 7 with support frame 32, for driving underwater vertical rotating device and underwater emission platform, with
Change the complementary angle that energy converter is incident on waterborne target；It is driven using variable speed machine, is used when grazing angle wide-angle variations
Fast driving improves test efficiency, uses when grazing angle low-angle adjusts and drive at a slow speed, it is ensured that Adjustment precision.While in order to
The requirement for meeting certain special tests, can also be used manual drive.
As shown in figure 4, in one embodiment：Using test platform of the invention, waterborne target radar is carried out in pond
The test of one-dimensional range profile underwater sound analogue measurement, target are a model ship (see Fig. 4) simplified, and model is made of metal, will
Target is inverted in underwater so that the underwater sound receive and dispatch energy converter with the water surface at 2.44 ° of grazing angles, to objective emission centre frequency
The linear FM signal for being 1ms for 2MHz, bandwidth 200kHz, pulsewidth, makes wave using fan, to simulate the wave of the practical water surface
It rises and falls, the disturbance water surface generates random multipath transmisstion sound field, and waves target generation.
Fig. 5 and Fig. 6 be the underwater sound when incident acoustic wave and stern angle are 180 ° simulate average measurements and it is one-dimensional away from
From as modeling and simulating comparative result figure, in figure from final test one-dimensional range profile data as can be seen that being deposited in target echo
In 4 more apparent peak values, respectively correspond the stern plate 271 of target, rear dihedral angle 272, intermediate sphere 273 and
Preceding dihedral angle 274, test measurement result and the consistency of theoretical simulation result are fine.Fig. 5 result illustrates that underwater sound simulation measures
Method waterborne target one-dimensional distance seem it is feasible, also turn out the practicability of test platform that the present invention designs.
Basic principle and key structural feature of the invention has been shown and described above.The present invention is not by the limit of examples detailed above
System, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It both falls in the range of claimed invention.The claimed scope of the invention is by appended claims and its equivalent
It defines.
Claims (9)
1. a kind of underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform, including for putting instrument and equipment
Instrument platform, the target suspension arrangement for hanging waterborne target scale model (27), for mimetic surface stormy waves make wave
Device, underwater vertical rotating device, the driving equipment for driving underwater vertical rotating device rotation and setting are vertical under water
Underwater emission platform on rotating device, it is characterised in that：The instrument platform, target suspension arrangement, wave simulator and driving
Equipment is arranged on the water surface, and the underwater vertical rotating device and underwater emission platform are arranged in underwater；The target is outstanding
The waterborne target scale model (27) hung on hang device can 360 ° of rotations in level orientation.
2. underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform according to claim 1, special
Sign is：The instrument platform includes and using for putting instrument and equipment and also serve as the platform floor (12) in person works place
In the platform fixed frame (11) of fixed platform bottom plate (12).
3. underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform according to claim 2, special
Sign is：The target suspension arrangement includes hanging bracket bottom plate (28), dial bottom plate (21), hanging bracket (22), level
Azimuth circle (23), rotary part (24), adjusting nut (25) and target hanger bar (26), the hanging bracket bottom plate (28)
It is fixed on the stringer of platform floor (12) two sides, separates target suspension arrangement integrally with instrument platform；The quarter
Scale bottom plate (21) is fixedly mounted on hanging bracket bottom plate (28) by hanging bracket (22), in the dial bottom plate (21)
The heart is equipped with level orientation dial (23), and rotary part (24) lower end passes through level orientation dial (23) by adjusting spiral shell
Female (25) are connect with target hanger bar (26) upper end, and target hanger bar (26) lower end is hung with waterborne target scale model
(27)；When rotary part (24) rotates, waterborne target scale model (27) rotation, rotating part are driven by target hanger bar (26)
Pointer on part (24) is corresponding with the angle index of level orientation dial (23), indicates waterborne target scale model (27)
Horizontal azimuth.
4. underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform according to claim 3, special
Sign is：Hanging bracket (22) lower end and hanging bracket bottom plate (28) are fixed, and upper end passes through the spiral shell on hanging bracket (22)
Line is connect with dial bottom plate (21), adjusts two spiral shells up and down on (21) four foot of dial bottom plate on each hanging bracket (22)
Mother makes dial bottom plate (21) to keep horizontal, neat for ensuring to be inverted in waterborne target scale model waterline in water and the water surface
It is flat.
5. underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform according to claim 1, special
Sign is：The wave simulator includes the fixed frame (41) being fixedly installed and the fan (42) being mounted on fixed frame (41), institute
Wind speed and the pitch angle for stating fan (42) are adjustable, for simulating the water surface wave of different wind speed and directions.
6. underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform according to claim 2, special
Sign is：The underwater vertical rotating device includes swivel mount, at the top of the two sides of the swivel mount respectively with platform floor (12)
Two sides it is hinged, underwater emission platform is equipped among bottom, side is equipped with the dial and pointer for being used to indicate rotation angle；Institute
State swivel mount bottom side and be connected with driving equipment by drawstring (7), the driving equipment pass through drawstring (7) drive swivel mount around
The hinge joints of two sides rotated within the scope of 0~90 °.
7. underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform according to claim 6, special
Sign is：The swivel mount includes the connection frame (31) and support frame arranged at the bottom (32) that side is arranged in, the connection
Frame (31) setting triangular in shape, support frame as described above (32) are arranged in rectangle, the top of the connection frame (31) of the setting triangular in shape
End is hinged on platform floor (12), and bottom end is fixedly connected on the short side in the support frame (32) of rectangle setting, the support
The middle part of frame (32) is equipped with underwater emission platform, and the long side of support frame as described above (32) is connected by drawstring (7) with driving equipment；Institute
It states connection frame (31) and is equipped with the angularly disposed support rod (33) for being used for reinforcement.
8. underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform according to claim 6, special
Sign is：The underwater emission platform includes energy converter steering scale plate (51), flat pad branch that swivel mount bottom is arranged in
Frame (52), adjusting bracket (53), energy converter mounting rack (54), laser equipment and energy converter, the energy converter turn to scale plate
(51) it is horizontally set on flat pad bracket (52) by adjusting bracket (53), energy converter mounting rack (54) setting exists
Energy converter turns to the middle part of scale plate (51)；The laser equipment is mounted on energy converter mounting rack (54), for debugging transducing
The centering of energy converter and waterborne target scale model center, removes after having debugged, energy converter is installed on device mounting rack (54)
On energy converter mounting rack (54).
9. underwater sound analogue measurement waterborne target full angle Electromagnetic Scattering Characteristics test platform according to claim 1, special
Sign is：The driving equipment includes the fixed frame (61) being fixed on the water surface and the elevator being mounted on fixed frame (61)
Machine (62), the hoist engine (62) is connect by drawstring (7) with underwater vertical rotating device, for driving underwater vertical rotating dress
Set with underwater emission platform, to change the complementary angle that energy converter is incident on waterborne target.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497422.2A CN108919209B (en) | 2018-05-22 | 2018-05-22 | Test platform for underwater acoustic simulation measurement of full-angle electromagnetic scattering characteristics of water surface target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497422.2A CN108919209B (en) | 2018-05-22 | 2018-05-22 | Test platform for underwater acoustic simulation measurement of full-angle electromagnetic scattering characteristics of water surface target |
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| Publication Number | Publication Date |
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| CN108919209A true CN108919209A (en) | 2018-11-30 |
| CN108919209B CN108919209B (en) | 2020-09-22 |
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| CN201810497422.2A Active CN108919209B (en) | 2018-05-22 | 2018-05-22 | Test platform for underwater acoustic simulation measurement of full-angle electromagnetic scattering characteristics of water surface target |
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| Publication number | Publication date |
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| CN108919209B (en) | 2020-09-22 |
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