CN106842190A - Radar surveying insect flutters its wings up and down the experimental technique of frequency, flight path and orientation information - Google Patents
Radar surveying insect flutters its wings up and down the experimental technique of frequency, flight path and orientation information Download PDFInfo
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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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
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Abstract
Fluttered its wings up and down the invention discloses radar surveying insect the experimental technique of frequency, flight path and orientation information, the acquisition of design, experimental procedure and the experiment insect used including experiment scene, the experimental data of acquisition can realize caste identification, accurate migrate track and the biological flux for calculating insect；Experimental provision of the invention is simple and easy to apply, and can simulated hexapod Live Flying situation.
Description
Technical field
The present invention relates to entomological radar experimental technique field, more particularly to extract insect and flutter its wings up and down frequency, flight path and court
To the experimental technique of information.
Background technology
A critically important restraining factors of agricultural production are insect pests.It is extensive by the insect that factor causes such as breeding and taking food
Remote flying activity is called migrating for insect.It is the main original for causing the extensive popular and strange land outburst of pest and disease damage to migrate
Cause.
In order to analyse in depth Migrating Insects Ecology mechanism, the accurate pre-alarming system of pest and disease damage getting up early is set up, urgently
3 critical problems to be solved：Category identification, biological flux distribution, migrate trajectory analysis.Want accurately to know Migrating Insects
Species, biological flux and track of migrating, it is necessary to the accurate biology for obtaining insect high-altitude flight, behaviouristics and meteorology ginseng
Number, major parameter includes three-dimensional direction, frequency of fluttering its wings up and down, Three-dimensional Track, humiture etc..
Tradition research means cannot Overall Acquisition above-mentioned parameter.Entomological radar is a kind of dedicated for monitoring insect communities
Radar, it can obtain the information such as the quantity and speed of colony insect, predict the track of insect communities.This is moved for research insect
Fly to provide a great convenience, have for crop protection and agricultural production and its important meaning.
Current existing entomological radar is limited by factors such as working system, systemic-function and indexs, cannot also obtain elder brother
The individual biological parameter of worm, and worm group's behavioral parameters are relatively low with the acquisition precision of aerology parameter and the degree of accuracy.
In order to realize insect pest early stage precisely early warning, further development insect communities are theoretical, and the entomological radar of a new generation must be realized accurately
Caste identification, accurate migrate track and the biological flux for calculating insect.
The content of the invention
In view of this, the experiment of the frequency of fluttering its wings up and down, flight path and direction of insect is obtained the invention provides a kind of radar
Method, can obtain frequency of fluttering its wings up and down, flight path and the direction of insect.
In order to solve the above-mentioned technical problem, the present invention is realized in：
Radar surveying insect flutters its wings up and down the experimental technique of frequency, flight path and orientation information, it is characterised in that including as follows
Step：
Step one, frequency abstraction of fluttering its wings up and down experiment, specifically include：
S11, scene is arranged inside microwave dark room：Two hollow plastic bars are placed vertically；The every top of plastic bar
A plastic sheet with holes is fixed at end；PE fishing lines are passed through from the hole of plastic sheet, PE fishing lines two ends are separately fixed at corresponding modeling
On material bar；
S12, insect to be measured is hung with PE fishing lines, then the PE fishing lines of insect will be hung and tied up between two plastic bars
The middle position of PE fishing lines；
S13, the insect flying is driven, while being irradiated vertically upward immediately below insect using radar, and receive echo；
The frequency of fluttering its wings up and down of insect is extracted from the echo；
Step 2, flight path experiment, specifically include：
S21, using the scene in S11, insect to be measured is hung with PE fishing lines, then the PE fishing lines of insect will be hung and tie up to
The middle position of the PE fishing lines between two plastic bars；
S22, the insect flying is driven, while irradiating insect in the direction parallel with insect using radar, and be received back to
Ripple；Insect flight track is extracted from the echo；
Step 3, extraction insect direction experiment, specially：
S31, using the scene in S11, insect to be measured is hung with PE fishing lines, then the PE fishing lines of insect will be hung and tie up to
The middle position of the PE fishing lines between two plastic bars；
S32, the direction of fixed insect, are irradiated using radar from the underface of insect, and radar at the uniform velocity rotates around vertical axes
360 ° and gather echo；
S33, the insect complete polarization RCS that will be extracted in echo draw out with the corresponding radar anglec of rotation in polar coordinates
Come, the corresponding angle of polarization RCS maximums is insect body direction.
Preferably, in the step one and step 2, first, it is desirable to ensure that insect is living, it is possible to fly；Second
Ensure that insect freely instigates wing, wing activity is without obstacle；3rd, suspension insect equipment therefor can not cover the thunder of insect
Up to echo.
Preferably, gluing insect from polypropylene foam, hung using PE fishing lines, specially：With glue by strip
One end of polypropylene foam is bonded at two centre positions of wing root of insect, by the another of strip polypropylene foam
Fastened using PE fishing lines at end.
Preferably, in the frequency abstraction experiment of fluttering its wings up and down of the step one, two hollow plastic bar distances are 10m.
Preferably, in the flight path experiment, distant place horizontal irradiation target of the radar from 12m；
Preferably, in the flight path experiment, two distances of the plastic bar are 20m.
Preferably, the insect is palaearctic sweet potato, black cutworm, beak hawkmoth long or greenish brown hawk moth.
The present invention has the advantages that：
(1) present invention obtains the frequency of fluttering its wings up and down of insect, flight path and direction using radar, including experiment scene sets
The acquisition of meter, experimental procedure and experiment insect used, the experimental data of acquisition can realize caste identification, accurately calculate elder brother
Migrate track and the biological flux of worm；Experimental provision of the invention is simple and easy to apply, and can simulated hexapod Live Flying situation.
Brief description of the drawings
Fig. 1 is frequency measurement experiment scene of fluttering its wings up and down.
Fig. 2 (a) is the side view of the sub- actual effect figure of mythimna separata, and Fig. 2 (b) is the top view of the sub- actual effect figure of mythimna separata.
Fig. 3 is insect target trajectory measurement experiment scene.
Fig. 4 is the experiment scene that insect orientation information is obtained.
Fig. 5 (a) is palaearctic sweet potato picture, and Fig. 5 (b) is the spectrogram of palaearctic sweet potato.
Fig. 6 (a) is greenish brown hawk moth picture, and Fig. 6 (b) is the spectrogram of greenish brown hawk moth.
Fig. 7 (a) is beak hawkmoth picture long, and Fig. 7 (b) is the spectrogram of beak hawkmoth long.
Fig. 8 (a) is black cutworm picture, and Fig. 8 (b) is black cutworm spectrogram.
Wherein, 1- plastic bars, 2- bases, 3- perforated plastic pieces, 4- cotton threads, 5-PE fishing lines, 6- insects to be measured, 7- radars day
Line, 8- video cameras, 9- searchlights.
Specific embodiment
Develop simultaneously embodiment below in conjunction with the accompanying drawings, and the present invention will be described in detail.
The present invention is the experimental technique designed to obtain the frequency of fluttering its wings up and down of insect, flight path and direction with radar,
The acquisition of the design including experiment scene, detailed experimental procedure and experiment insect used.
First, frequency abstraction of fluttering its wings up and down is tested
Scene is arranged in microwave dark room the inside, to reduce noise jamming.Fig. 1 is experiment scene.By two hollow plastics of PVC
Bar 1 is placed vertically at a distance of 10m, and the bottom of plastic bar 1 is inserted in irony base 2 and fixes, the 4m high of plastic bar 1.The top of plastic bar 1 is fixed
One plastic sheet 3 with holes.PE fishing lines 5 are passed through from the hole of plastic sheet 3, and two ends are fixed on plastic bar 1.Fix for convenience,
Place PE fishing lines 5 and scratch hand, the two ends of PE fishing lines 5 connect cotton thread 4, for fixed on plastic bar 1.Insect to be measured 6 uses PE fishes
Line 5 is suspended on two middle positions of plastic bar 1, and the PE fishing lines 5 for hanging insect are tied up on PE fishing lines 5 sidewards.Radar day
Line 7 is placed on immediately below insect and irradiates vertically upward.
For the experiment of frequency of fluttering its wings up and down, in order to obtain frequency of fluttering its wings up and down, to accomplish during suspension insect it is following some：First will protect
Card insect is living, it is possible to flown；Second will ensure that insect can freely instigate wing, and wing activity is without obstacle；3rd,
The article radar return for hanging insect is small, it is impossible to cover the radar return of insect.In order to reach the above, some is required, design
Following suspension solutions：Insect is glued from low echo material polypropylene foam, is then hung with PE fishing lines 5.With strength
Be bonded at insect on one of the polypropylene foam of strip by glue.Super glue has very strong corruption to polypropylene foam
Corrosion.In order to prevent corrosion, one in strip polypropylene foam is stained with double faced adhesive tape, and glue is dropped on double faced adhesive tape.So
The polypropylene foam of strip is bonded at the back of insect, two centre positions of wing root afterwards.Finally by strip poly- third
The other end of alkene foamed plastics is perforated with pin, and PE fishing lines 5 are tied up to above.According to the size of insect, by polypropylene foam
One of viscous insect is cut into corresponding size.The size criteria of cutting is will not after polypropylene foam is bonded at the back of insect
The wing root of insect is adhered to, insect flying is not influenceed.The consumption of glue determines according to the size of polypropylene foam, will gather
One of acryl foam plastics smears uniformly.Consumption glues loosely insect very little, and insect can fly away；Consumption too much can be insect wing
Wing root is clung, and insect cannot fly.Fig. 2 is the insect actual effect for gluing.
Do not fly after many insect suspensions, trouble is brought to experiment measurement.Come to allow insect to fly up, devise two sets of sides
Case.Scheme one is the bullet plastic bar 1 with hand gently, vibrates insect.For most of insect, can all be flown up after vibration
Come, but winged insect, the no effect of scheme one, then using scheme two are not liked for some.Scheme two is to take a stock
Allow insect to fall in the end of stock, allow insect rest one section when after, stock is removed suddenly.At this time insect can fly, but
Duration is very short, therefore remove after stock will gathered data rapidly.In order to prevent the echo interference of stock and operator, remove
After falling stock, operator squats down on the ground rapidly, and rapid is placed horizontally on the ground stock.
2nd, flight path experiment
Flight path experiment scene and flutter its wings up and down that frequency is basically identical, different places are：First, radar antenna 7 by from
Irradiation has been changed to the distant place horizontal irradiation target from 12m upwards vertically below；Second, the spacing of two plastic bars 1 is widened, and is become
It is 20m, two plastic bars 1 is located at outside radar beam, prevents the strong radar return of plastic bar 1 from covering echo from insect.Fig. 3 is
Experiment scene schematic diagram.
The method of viscous insect is identical with frequency experiment of fluttering its wings up and down.
In order to verify the correctness of the movement locus of radar surveying, while gathered data, recorded with video camera 8
Picture.Due to microwave dark room dark, during video recording, the tracking target illumination of hand-held searchlight 9.It should be noted that searchlight 9 will
From side illumination (direction vertical with the video recording direction of video camera 8), to prevent on the wall after intense light irradiation to target, mesh is hidden
Mark the light of reflection.
3rd, insect direction experiment
The purpose of experiment is the direction for measuring insect.Direction is determined by insect complete polarization RCS directional diagrams.Used
S-band radar emission signal is linear polarised electromagnetic wave, when polarization radar direction and insect body towards it is consistent when, the echo of insect
Most strong, i.e. insect RCS is maximum；When polarization radar direction and insect body towards it is vertical when, the echo of insect is most weak, i.e. insect
RCS is minimum.The direction of fixed insect, makes radar at the uniform velocity be rotated by 360 °, and insect RCS and angle are plotted as into polar form, will
' 8 ' fonts can be formed.Polarization maximum direction is insect body direction.The rotation of radar is with a servo turntable control
System, rotating speed is uniformly slow, prevents radar antenna from shaking.
In order to obtain accurate orientation information, to accomplish during suspension insect it is following some：First will ensure insect body water
Point without being lost in (i.e. RCS characteristics do not change), insect can be living, or firm stubbornly refuse long；Second will ensure insect
Remains stationary, will not fly, and will not rotate, because radar will be rotated by 360 ° the RCS characteristics for obtaining insect；3rd, hang insect
Article radar return is small, it is impossible to cover the radar return of insect.In order to reach the above, some is required, is fluttered its wings up and down frequently in measurement
Following improvement has been done on the basis of the viscous insect method of rate：After being punched on polypropylene foam with pin, two PE fishing lines are worn
5.Two PE fishing lines 5 angle in suspension is in 90 °, it is therefore an objective to which insect will not be rotated.It is a small amount of in the wing root drop of insect
Glue, makes the wing of insect be fixed from instigating.Fig. 4 is experiment scene schematic diagram.
Embodiment
First, flutter its wings up and down frequency measurement experimental procedure
1. scene is arranged；
2. radar system is debugged；
3. insect is glued, and is suspended on PE fishing lines 5, adjust the position of insect, make insect in the surface of radar antenna 7；
4. radar start；
5. insect is flying, and jumps to step 9, no person's step 6；
6. plastic bar 1 is flicked with hand, at most attempted 5 times.Insect is flying, and jumps to step 9, no person's step 7；
7. bar is held, insect is fallen in the end rest of bar, bar is pulled after 3 minutes, operator squats down rapidly, and rapid by bar
Keep flat on the ground, at most attempt 5 times.Insect is flying, and jumps to step 9, no person's step 8；
8. radar switching-off.Insect is changed, step 3 is jumped to.
9. 3 groups of data of insect flying are gathered.
10. insect (including endways PE fishing lines 5 and polypropylene foam) is removed, 2 groups of data of barnyard scape are gathered.
11. radar switching-offs.
12. frequencies of fluttering its wings up and down that insect is measured with stroboscope, to verify the correctness of radar vibration measuring.
13. is long wide with body with the body of tape measure insect, takes pictures, and records the video of insect flying.
The temperature and humidity of 14. record experiment scenes.
2nd, trajectory measurement experimental procedure
1. scene is arranged；
2. radar system is debugged；
3. insect is glued, and is suspended on PE fishing lines 5, adjust the position of insect, make insect in the middle of the wave beam of radar；
4. radar start；
5. insect is flying, and jumps to step 9, no person's step 6；
6. plastic bar 1 is flicked with hand, at most attempted 5 times.Insect is flying, and jumps to step 9, no person's step 7；
7. holding bar makes insect lie prone in the end rest of bar, and bar is pulled after 3 minutes, and operator squats down rapidly, and bar is rapid
Keep flat on the ground, at most attempt 5 times.Insect is flying, and jumps to step 9, no person's step 8；
8. radar switching-off.Insect is changed, step 3 is jumped to；
9. insect is illuminated with searchlight 9,3 groups of data of insect flying are gathered, to insect while each gathered data
Video recording；
10. insect (including endways PE fishing lines 5 and polypropylene foam) is removed, 2 groups of data of barnyard scape are gathered；
11. are placed on tripod corner reflector, are placed on the position of original suspension insect, gather 2 groups of data, and use laser
Distance of the stadia surveying radar to corner reflector；
12. radar switching-offs.
The body of 13. measurement insects is long and body is wide and takes pictures, and records the video of insect flying.
The temperature and humidity of 14. record experiment scenes.
3rd, orientation information obtains experimental procedure
1. scene is arranged；
2. radar system is debugged；
3. insect is glued, and is suspended on PE fishing lines 5, adjust the position of insect, make insect in the middle of the wave beam of radar；
4. after etc. target is static, with laser range finder instrumentation radar range-to-go；
5. radar start, starts turntable, while gathered data；
6. radar keeps start, cuts insect wing；
7. turntable is started, while gathered data；
8. insect (including endways PE fishing lines 5 and polypropylene foam) is removed, 2 groups of data of barnyard scape are gathered；
9. radar switching-off.
10. the body of measurement insect is long and body is wide and takes pictures.
The temperature and humidity of 11. record experiment scenes.
Experiment radar parameter used is as follows：
The radar parameter of table 1
Experiment measures the frequency of fluttering its wings up and down of the insects such as palaearctic sweet potato, black cutworm, beak hawkmoth long, greenish brown hawk moth.Its real scene shooting figure
Piece and spectrogram are respectively such as Fig. 5 (a)-Fig. 8 (b).The result of stroboscope verifies the correctness of radar measurements as control.
Experimental result is as follows：
By contrast it can be seen that, radar surveying flutter its wings up and down frequency resultant and stroboscope measurement flutter its wings up and down frequency resultant very
Close, precision is very high, illustrates that the experimental technique of design is feasible.
In sum, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in of the invention
Within protection domain.
Claims (7)
1. radar surveying insect flutters its wings up and down the experimental technique of frequency, flight path and orientation information, it is characterised in that including following step
Suddenly：
Step one, frequency abstraction of fluttering its wings up and down experiment, specifically include：
S11, scene is arranged inside microwave dark room：Two hollow plastic bars are placed vertically；The every top of plastic bar is consolidated
A fixed plastic sheet with holes；PE fishing lines are passed through from the hole of plastic sheet, PE fishing lines two ends are separately fixed at corresponding plastic bar
On；
S12, insect to be measured is hung with PE fishing lines, then the PE fishes that the PE fishing lines of insect are tied up between two plastic bars will be hung
The middle position of line；
S13, the insect flying is driven, while being irradiated vertically upward immediately below insect using radar, and receive echo；From this
The frequency of fluttering its wings up and down of insect is extracted in echo；
Step 2, flight path experiment, specifically include：
S21, using the scene in S11, insect to be measured is hung with PE fishing lines, then the PE fishing lines of insect will be hung and tie up to two
The middle position of the PE fishing lines between plastic bar；
S22, the insect flying is driven, while irradiating insect in the direction parallel with insect using radar, and receive echo；From
Insect flight track is extracted in the echo；
Step 3, extraction insect direction experiment, specially：
S31, using the scene in S11, insect to be measured is hung with PE fishing lines, then the PE fishing lines of insect will be hung and tie up to two
The middle position of the PE fishing lines between plastic bar；
S32, the direction of fixed insect, are irradiated using radar from the underface of insect, and radar is at the uniform velocity rotated by 360 ° simultaneously around vertical axes
Collection echo；
S33, the insect complete polarization RCS that will be extracted in echo draw out with the corresponding radar anglec of rotation in polar coordinates, pole
Change the corresponding angle of RCS maximums and be insect body direction.
2. radar surveying insect as claimed in claim 1 flutters its wings up and down the experimental technique of frequency, flight path and orientation information, and it is special
Levy and be, in the step one and step 2, first, it is desirable to ensure that insect is living, it is possible to fly；Second will ensure elder brother
Worm freely instigates wing, and wing activity is without obstacle；3rd, suspension insect equipment therefor can not cover the radar return of insect.
3. radar surveying insect as claimed in claim 2 flutters its wings up and down the experimental technique of frequency, flight path and orientation information, and it is special
Levy and be, insect is glued from polypropylene foam, hung using PE fishing lines, specially：The polypropylene of strip is steeped with glue
One end of foam plastics is bonded at two centre positions of wing root of insect, and the other end of strip polypropylene foam is used into PE
Fishing line is fastened.
4. radar surveying insect as claimed in claim 1 flutters its wings up and down the experimental technique of frequency, flight path and orientation information, and it is special
Levy and be, in the frequency abstraction experiment of fluttering its wings up and down of the step one, two hollow plastic bar distances are 10m.
5. radar surveying insect as claimed in claim 1 flutters its wings up and down the experimental technique of frequency, flight path and orientation information, and it is special
Levy and be, in the flight path experiment, distant place horizontal irradiation target of the radar from 12m.
6. radar surveying insect as claimed in claim 1 flutters its wings up and down the experimental technique of frequency, flight path and orientation information, and it is special
Levy and be, in the flight path experiment, two distances of the plastic bar are 20m.
7. radar surveying insect as claimed in claim 1 flutters its wings up and down the experimental technique of frequency, flight path and orientation information, and it is special
Levy and be, the insect is palaearctic sweet potato, black cutworm, beak hawkmoth long or greenish brown hawk moth.
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| CN108513955A (en) * | 2018-06-07 | 2018-09-11 | 南京农业大学 | A kind of measurement device and its assay method of contactless determination flying insect flight path |
| CN108646240A (en) * | 2018-04-25 | 2018-10-12 | 北京理工大学 | A kind of high-resolution complete polarization entomological radar detection system and its detection method |
| CN109116348A (en) * | 2018-07-23 | 2019-01-01 | 北京理工大学 | A kind of remote trace simulation method taken off towards insect communities with cruise |
| CN109190149A (en) * | 2018-07-20 | 2019-01-11 | 北京理工大学 | A kind of emulation verification method extracting frequency of fluttering its wings up and down based on birds EM scatter model |
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| CN108157347A (en) * | 2018-02-01 | 2018-06-15 | 深圳阿牛牛科技有限公司 | A kind of laser mosquito-driving device |
| CN108646240A (en) * | 2018-04-25 | 2018-10-12 | 北京理工大学 | A kind of high-resolution complete polarization entomological radar detection system and its detection method |
| CN108513955A (en) * | 2018-06-07 | 2018-09-11 | 南京农业大学 | A kind of measurement device and its assay method of contactless determination flying insect flight path |
| CN108513955B (en) * | 2018-06-07 | 2023-08-29 | 南京农业大学 | Device and method for measuring flying insect flight trajectory in non-contact manner |
| CN109190149B (en) * | 2018-07-20 | 2023-04-21 | 北京理工大学 | Simulation verification method for extracting wing vibration frequency based on bird electromagnetic scattering model |
| CN109190149A (en) * | 2018-07-20 | 2019-01-11 | 北京理工大学 | A kind of emulation verification method extracting frequency of fluttering its wings up and down based on birds EM scatter model |
| CN109116348A (en) * | 2018-07-23 | 2019-01-01 | 北京理工大学 | A kind of remote trace simulation method taken off towards insect communities with cruise |
| CN111007499A (en) * | 2019-11-29 | 2020-04-14 | 北京理工大学 | Insect body width inversion method based on full polarization radar power matrix eigenvalue |
| CN111007499B (en) * | 2019-11-29 | 2021-09-17 | 北京理工大学 | Insect body width inversion method based on full polarization radar power matrix eigenvalue |
| CN113095462A (en) * | 2021-02-25 | 2021-07-09 | 河南省农业科学院植物保护研究所 | Night-walking insect biological flux measuring and calculating method based on sounding lamp |
| CN113095462B (en) * | 2021-02-25 | 2024-04-30 | 河南省农业科学院植物保护研究所 | Night-driving insect biological flux measuring and calculating method based on sounding lamp |
| CN115362990A (en) * | 2022-09-22 | 2022-11-22 | 中国农业科学院植物保护研究所 | Insect flapping frequency measuring device and method |
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