CN204389680U - The image resolution ratio that optics-microwave shares evaluates bar shaped target - Google Patents
The image resolution ratio that optics-microwave shares evaluates bar shaped target Download PDFInfo
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- CN204389680U CN204389680U CN201520060008.7U CN201520060008U CN204389680U CN 204389680 U CN204389680 U CN 204389680U CN 201520060008 U CN201520060008 U CN 201520060008U CN 204389680 U CN204389680 U CN 204389680U
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Abstract
The image resolution ratio that a kind of optics-microwave shares evaluates bar shaped target, comprise the structures such as cement board target bar, coarse gravel area, target substrate layer, wherein: target bar is the different reflecting material that can present black and white contrast in optics or microwave imaging load diagram picture; Target substrate layer is in order to as substrate, can lay different reflecting materials thereon, guarantees that target surface is smooth and is convenient to long-time running.The beneficial effects of the utility model are: can simultaneously for evaluating optics and the evaluation of microwave remote sensing load space resolution; Optics or the microwave remote sensing image of 0.1 meter of-5 meters of resolution can be evaluated; Resolution sizes is calculated without the need to passing through; The geometric configuration of target because of sleet, frost and being affected, can not be suitable for field Long-Time Service; Target has good self-cleaning ability, and rainwater and wind can wash out the dust of target surface; Concrete flat slab and gravel in the wild catagen speed are slow, significantly reduce the maintenance cost needed for normalization operation.
Description
Technical field
The utility model relates to remote sensing technology field, particularly relate to a kind of novel can simultaneously for evaluating the fixed target of optics and microwave remote sensing load image resolution ratio.
Background technology
Remote sensing technology, dynamically can obtain target electromagnetic radiation information on a large scale, realizes, for the efficient cognition of atural object actual physical attribute, having broad application prospects in resource, mapping, meteorology and military surveillance etc.Along with earth observation remote sensing technology is gradually to meeting the development of quantification application direction, normalization ground periodic monitoring satellite load operational process neutral dynamic change, accurately change detected degree, accurately find change reason and formulate remedial measures targetedly and obtained paying attention to widely both at home and abroad.
China is multiple spaceborne, the aerial remote sensing load of successful independent research since " 95 ", and define the satellite series such as resource, environment, meteorology, ocean, input amount reaches several hundred million, independently obtains the ability of earth observation information to improving China.But current China industry department in fact or to use external remotely-sensed data, in the total amount that actual remotely-sensed data uses, domestic data are less than 10%.Its one of the main reasons is the effective load performance of the medium-term and long-term shortage of China's remote sensing technology chain and data quality checking link, lack perfect can the testing standard complex of normalization monitors load performance.
Fixed test target can provide the reference information that consistance is strong, recycling degree is high, detects for regularly carrying out load performance, and the satellite load periodicity quality testing of especially high heavy visit has vital role.
Test fixed target for remote optical sensing load performance, what have this target mainly contains Finland Sj kulla field, U.S. Big Spring field, U.S. Stennis field, U.S. USAF field, photoelectricity institute of Chinese Academy of Sciences Bao Touchang, field, space flight Fifth Academy of Aerospace Industry Song Shan etc.Realizing, on target material therefor, specifically can being divided into two classes again, a class utilizes paint brush system; Another kind utilizes black and white gravel.
Test fixed target for microwave remote sensing load performance, the German FGAN-FOM that mainly contains with this target calibrates field, and its utilization has high backward scattered stone and characterizes high gray-scale value, and concrete tabular surface characterizes low gray-scale value.
The major technique defect of the fixed target of above-mentioned optics and the resolution test of microwave load has:
1) existing optics and microwave build the evaluation of fixing artificial target field for respective image spatial resolution respectively, are difficult to evaluate optics and microwave imagery resolution simultaneously.
2) existing microwave fixed artificial target only can be used for the detection of 0.2m, 0.3m, a few image in different resolution such as 0.4 meter, cannot evaluate current typical spaceborne below 5m image in different resolution.
3) the resolution evaluation of existing fan-shaped target needs, by calculating the size knowing image resolution ratio, to draw image resolution ratio size by image is directly visual.
Summary of the invention
The utility model object is to provide the image resolution ratio evaluation bar shaped target that a kind of optics-microwave shares, with solve prior art exist be difficult to evaluate optics and microwave imagery resolution simultaneously, current typical spaceborne below 5m image in different resolution cannot be evaluated, and cannot by the image directly visual problem drawing image resolution ratio size.
The technical solution of the utility model is: the image resolution ratio that a kind of optics-microwave shares evaluates bar shaped target, it is characterized in that, comprise the target zones of rectangle, the limit, north and south of this target zones and real north north by east angle are 10 ° or north by west angle 10 °, be equipped with the flat concrete target bar of many group different in width and different length on the surface of this target zones, black gravel bed is laid on the surface of the remainder in this target zones.
Described flat concrete target bar comprises:
And the 13rd group and the 14th group, the 13rd group is arranged in order from long to short forms by organizing the length horizontal stripe different with width more, and be positioned at the east of target zones, one group that length is larger is positioned at southeast corner; 14th group is arranged in order from long to short forms by organizing the length taeniae different with width more, and be positioned at the north of target zones, one group that length is larger is positioned at southeast corner.
Described the 13rd group composed as follows:
Involved the 14th group composed as follows:
Above-mentioned group is numbered Reference numeral.
The Rotating fields of described target zones comprises: be located at the substrate layer be made up of prototype gradation gravel on ground, and described flat concrete target bar is made up of concrete layer, is located at above substrate layer; Other regions on substrate layer are equipped with permeable geotextile, the black gravel bed described in laying on permeable geotextile; This black gravel bed is concordant with the surface of concrete layer.
As can be seen from technique scheme, the utility model has following beneficial effect:
(1) can simultaneously for evaluating optics and the evaluation of microwave remote sensing load space resolution;
(2) width design of target bar is 0.1 meter-5 meters, therefore correspondingly can evaluate optics or the microwave remote sensing image of 0.1 meter of-5 meters of resolution;
(3) width of target bar is known, can draw resolution sizes by target bar distinguishable in optics or microwave imagery is directly visual, calculates without the need to passing through;
(4) geometric configuration of target because of sleet, frost and being affected, can not be suitable for field Long-Time Service;
(5) target has good self-cleaning ability, and rainwater and wind can wash out the dust of target surface;
(6) catagen speed is slow in the wild for concrete flat slab and gravel, significantly can reduce the maintenance cost needed for normalization operation.
Accompanying drawing explanation
Fig. 1 is general structure vertical view of the present utility model;
Fig. 2 is bar shaped target sectional view of the present utility model;
Fig. 3 is substrate layer section structure layer of the present utility model.
Embodiment
See Fig. 1 ~ Fig. 3, the remote sensing images resolution that a kind of optics-microwave of the utility model shares evaluates bar shaped target, and its structure is described as follows:
1, figure is overlooked:
In order to meet the spatial resolution evaluation requirements of 0.1 meter of-5 meters of resolution Optical or microwave remote sensing load, design strip target A as shown in Figure 1, concrete specification is as shown in table 1.
The specification quantitative requirement of table 1 concrete target bar
| Target bar type | Quantity |
| 5 meters × 25 meters | Laterally with longitudinally each 3 |
| 3 meters × 15 meters | Laterally with longitudinally each 3 |
| 2 meters × 10 meters | Laterally with longitudinally each 3 |
| 1 meter × 5 meters | Laterally with longitudinally each 3 |
| 0.9 meter × 4.5 meters | Laterally with longitudinally each 5 |
| 0.8 meter × 4 meters | Laterally with longitudinally each 5 |
| 0.7 meter × 3.5 meters | Laterally with longitudinally each 5 |
| 0.6 meter × 3 meters | Laterally with longitudinally each 5 |
| 0.5 meter × 2.5 meters | Laterally with longitudinally each 5 |
| 0.4 meter × 2 meters | Laterally with longitudinally each 5 |
| 0.3 meter × 2 meters | Laterally with longitudinally each 5 |
| 0.2 meter × 2 meters | Laterally with longitudinally each 5 |
| 0.1 meter × 2 meters | Laterally with longitudinally each 5 |
| 1 meter × 5 meters (tilting 45 °) | Laterally with longitudinally each 3 |
| 0.8 meter × 4 meters (tilting 45 °) | Laterally with longitudinally each 3 |
2, cross-section structure:
The remote sensing images resolution that optics-microwave shares evaluates bar shaped target sectional view as shown in Figure 2, most last layer be respectively the thick concrete layer of 15cm 21,15cm thick/particle diameter is the gravel bed 22 of 4-8cm; The permeable geotextile 23 of one deck 300g/m2 is laid, overlapping 50mm between adjacent permeable geotextile 23 seam on the downside of gravel bed 22 region.The effect of permeable geotextile 23 be prevent sandy layer sandy soil on turn over, grow weeds, be convenient to rainwater infiltration simultaneously.
Its lower one deck is the substrate layer 24 that prototype gradation gravel is formed, and is for the ease of settling two kinds of bar shaped targets thereon.
3, the remote sensing images resolution that optics-microwave shares evaluates bar shaped target construction method:
3.1 target zones addressings:
Target zones addressing is less at dust storm, block without buildings, broad view, be convenient to daily servicing region.Place size is about 60m*70m region.
3.2 prepartions of land and substrate layer are laid:
See Fig. 3, in order to ensure good water permeability and flatness, the anti-pressure ability of fixed target place, the substrate layer 24 of fixing target zones is made up of prototype gradation gravel.Wherein the maximum particle diameter of gravel should not be greater than 60mm, is not less than 0.071mm, and powder content should not be greater than 5%; Mechanical ramming, thickness is 200mm, and compaction coefficient is greater than 0.93.In addition, needing on the top layer of substrate layer 24 to lay specification is that the permeable geotextile of 300g/m2 is to prevent substrate layer weedy.It is ground 25 below substrate layer 24.
3.3 concrete target bars are built:
(1) target and real north north by east angle are 10 ° or north by west angle 10 ° to adopt gyro-theodolite to ensure.
(2) template and reinforced frame is made according to target bar specification.
(3) according to planimetric position and the elevation of target bar each on target drawing, utilize transit and level meter by formwork support arrangement accurately, connect tight, smooth-going.
(4) with the drill rod fixed form of nail in prototype gradation stone lining bottom, ensure that drill rod is positioned at the outside of template, and be about 2cm lower than template end face, so that constructing operation.Template and substrate layer surface of contact must not have gap, and tight if any blocking up, with mortar leakage prevention, brushing separant inside template, in order to form removal.After template has been propped up, aggregate chips powder should be spilt levelling and sprinkle water closely knit.
(5) by dumper, C25 concrete is discharged into template storehouse, then manually lays concrete target bar, carry out cloth by the order in template limit, angle, plate.
(6) device is turned over as a plug to complete concrete vibrating.Vibrating time stops sinking with concrete surface, bubble of no longer emerging, and flashing mud is main, and poker vibrator vibrating time is advisable with 20s ~ 30s, and vibration board is advisable with 30s ~ 40s; Time is also unsuitable long, prevents from shaking, and produces segregation.
(7) substantially levelling to concrete surface according to the upper edge of template.Drive blibbing out of with darby and wooden model, make surface bleeding further.In traveling process, whether access panel face is smooth.
(8) artificial (wood is smeared, plastics smear) and finisher is utilized to carry out target bar surface carefully levelling and utilize and check that chi detects surface flatness.
(9) lay plastic sheeting after watering and carry out concrete curing, to ensure concrete quality.
3.4 gravels are laid:
(1) at the interval of width <0.4 rice concrete target bar, machinery coordinates artificial laying diameter to be the gravel of 2cm ± 0.5, thickness 15cm.
(2) at the interval of width G reatT.GreaT.GT0.4 rice concrete target bar, machinery coordinates artificial laying diameter to be the gravel of 5 cm ± 1, thickness 15cm.
(3) 0.4 meters of target bars are by wide 2, target bar side, and machinery coordinates manually lays 5cm ± 1 gravel; 2cm ± 0.5 gravel is laid by narrow 2, target bar side.
(4) diameter is laid in all the other regions is the gravel of 2cm ± 0.5, thickness 15cm.
(5) with 3m ruler for reference, adjustment gravel waviness.
Plane of the present utility model coagulates the different reflectivity that native target bar can present black and white contrast in optics or microwave imaging load diagram picture.
Claims (5)
1. the image resolution ratio evaluation bar shaped target that optics-microwave is shared, it is characterized in that, comprise the target zones of rectangle, the limit, north and south of this target zones and real north north by east angle are 10 ° or north by west angle 10 °, be equipped with the flat concrete target bar of many group different in width and different length on the surface of this target zones, black gravel bed is laid on the surface of the remainder in this target zones.
2. the image resolution ratio that optics-microwave according to claim 1 shares evaluates bar shaped target, and it is characterized in that, described flat concrete target bar comprises:
And the 13rd group and the 14th group, the 13rd group is arranged in order from long to short forms by organizing the length horizontal stripe different with width more, and be positioned at the east of target zones, one group that length is larger is positioned at southeast corner; 14th group is arranged in order from long to short forms by organizing the length taeniae different with width more, and be positioned at the north of target zones, one group that length is larger is positioned at southeast corner.
3. the image resolution ratio that optics-microwave according to claim 2 shares evaluates bar shaped target, it is characterized in that, described the 13rd group composed as follows:
。
4. the image resolution ratio that the optics-microwave according to Claims 2 or 3 shares evaluates bar shaped target, it is characterized in that, involved the 14th group composed as follows:
。
5. the image resolution ratio that optics-microwave according to claim 1 shares evaluates bar shaped target, it is characterized in that, the Rotating fields of described target zones comprises: be located at the substrate layer be made up of prototype gradation gravel on ground, described flat concrete target bar is made up of concrete layer, is located at above substrate layer; Other regions on substrate layer are equipped with permeable geotextile, the black gravel bed described in laying on permeable geotextile; This black gravel bed is concordant with the surface of concrete layer.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656072A (en) * | 2015-01-28 | 2015-05-27 | 中国科学院光电研究院 | Optical-microwave common image resolution evaluation bar target and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104656072A (en) * | 2015-01-28 | 2015-05-27 | 中国科学院光电研究院 | Optical-microwave common image resolution evaluation bar target and construction method thereof |
| CN104656072B (en) * | 2015-01-28 | 2017-01-11 | 中国科学院光电研究院 | Optical-microwave common image resolution evaluation bar target and construction method thereof |
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| GR01 | Patent grant |