CN101672777B - Device for measuring bi-directional reflectance of ice layer on any position - Google Patents
Device for measuring bi-directional reflectance of ice layer on any position Download PDFInfo
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- CN101672777B CN101672777B CN 200910193131 CN200910193131A CN101672777B CN 101672777 B CN101672777 B CN 101672777B CN 200910193131 CN200910193131 CN 200910193131 CN 200910193131 A CN200910193131 A CN 200910193131A CN 101672777 B CN101672777 B CN 101672777B
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- semicircle arch
- arch track
- rotary turbine
- underarm
- track
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Abstract
The invention provides a device for measuring bi-directional reflectance of an ice layer on any position. The device comprises a semi-circular arch orbit, a circular earth orbit and an instrument rack. The semi-circular arch orbit is vertically erected, the bottom of which is in fit connection with the circular earth orbit so that the semi-circular arch orbit can rotate along the circular earth orbit. The instrument rack is arranged on the semi-circular arch orbit and can slide along the semi-circular arch orbit. The instrument rack is provided with two sensor probes. The included angles between the optical axes of the two sensor probes and the horizontal line are equal, and the sensor probe under the horizontal line points at the circle center of the semi-circular arch orbit. The method can measure the reflecting radiance at different solar azimuths and zenith angles, has the characteristics of stability, reliability and high precision and is especially suitable for outdoor optical data measurement of the ice layer for long time.
Description
Technical field
The present invention relates to the fields of measurement of ocean, lake water colour, particularly can be on sphere the device for measuring bi-directional reflectance of ice layer of optional position.
Background technology
Sea ice is the key element of a key in the terrestrial climate system, and large-scale sea ice is simulated, and the result shows that sea ice not only has very strong susceptibility to the variation of weather, and simultaneously it also is to impel one of factor that weather changes.The variation of temperature can cause the variation of sea ice character of surface and thickness, thereby affects the exchange of energy, humidity and the power of atmosphere and ocean on the zone.Shortwave radiation is the main wave band that the ice sheet and the sun carry out energy exchange, therefore understands the interaction of sun shortwave radiation and sea ice, and the ice sheet change in physical properties is very significant to the potential amplification of climate change.In addition, the ultraviolet that ice sheet saw through and the component of visible light also have very big influence to sea ice lower floor primary productivity and biologically active, so, Global Climate changes and the ecosystem in zone, polar region in order to study, and needs to understand ultraviolet light wave band, visible light wave range and the distribution of near-infrared band in sea ice.
In order to study the optical characteristics of sea ice, the at present domestic also not relevant report that is used to measure sea ice optical characteristics instrument.Traditional two-way emissivity device can only adopt certain specific angle, is fixed on certain point measurement, can't realize the optional position, measures in real time at any angle.To need the mobile optical sensor probe in order measuring, and to be difficult to keep incident angle consistent in the process that moves, shine into measuring error with reflection angle and horizontal sextant angle.
Summary of the invention
The objective of the invention is to overcome the prior art deficiency, provide a kind of can be on semi circular surface the arbitrfary point, the device for measuring bi-directional reflectance of ice layer of the arbitrarily angled optional position that bi-directional reflectance of ice layer is measured.
In order to realize the foregoing invention purpose, the present invention includes following technical characterictic: a kind of device for measuring bi-directional reflectance of ice layer of optional position comprises semicircle arch track, ground circuit orbit and instrument stand; Described semicircle arch track stands vertically setting, and match with the ground circuit orbit and be connected in semicircle arch track bottom, semicircle arch track can be rotated along the ground circuit orbit; Described instrument stand is located on the semicircle arch track, and can slide along semicircle arch track; Instrument stand is provided with two sensor probes, and the optical axis of each sensor probe equates with the horizontal line angle, and the sensor probe under the horizontal line points to the semicircle arch track center of circle.
Further, two bottoms of described semicircle arch track are provided with " n " shape groove, and described " n " shape groove and ground circuit orbit closely cooperate, and make semicircle arch track to slide along the ground circuit orbit.
In order to guarantee that at an arbitrary position the optical axis of each sensor probe equates with the horizontal line angle down, described instrument stand comprises the slip worm screw, goes up rotary turbine and following rotary turbine; Last rotary turbine is identical with following rotary turbine and respectively be separately positioned on the upper and lower position of slip worm screw; Last rotary turbine is connected with upper arm, and following rotary turbine is connected with underarm; Adjust upper arm and can make rotary turbine, slip worm screw and following rotary turbine cooperate worm gear drive, when slip worm screw level, upper arm and underarm equate with the horizontal line angle; Upper arm is provided with sensor probe; Underarm is provided with sensor probe, and underarm is connected with semicircular track by slide rail, and underarm points to the center of circle of semicircle arch track.
Further, described semicircle arch track is spliced by some circular arcs, and described slip worm screw is provided with horizontal bubble instrument, and described ground circuit orbit and semicircle arch track are provided with angle index, and underarm is provided with electronic compass.Described slide rail and semicircle arch track are fixed by screw.
Beneficial effect of the present invention is: in the measuring process of reality, can measure in the arbitrfary point on the sphere, and can guarantee to equate with the horizontal line angle at the optical axis that moves to latter two sensor probe of difference, keep measuring accuracy.The present invention can rotate so that different solar azimuths are measured with the reflection spoke brightness under the different zenith angles, because instrument is reliable and stable, the feasible measurement for a long time by this device is achieved, in the measurement of reality, often measuring sonde can be connected spectrometer and control system by optical fiber, be implemented in the long-term measurement of ice sheet optical data under the field environment.
Description of drawings
Fig. 1 is a bidirectional reflectance support overall schematic of the present invention;
Fig. 2 is the instrument stand structural representation of bidirectional reflectance support of the present invention.
Embodiment
As shown in Figure 1, the present invention is a kind of ice sheet measuring apparatus for reflection index, and it is made up of ground circuit orbit 5, semicircle arch track 3, instrument stand 2.For the field work convenient transportation, ground circuit orbit 5 is made up of six sections circular arcs, and the junction is 6, and semicircle arch track 3 is made up of three sections arcs, junction 1.Semicircle arch track 3 both sides bases 4 show " n " shapes, and " n " shape base built or be set on the ground circuit orbit 5 can slide semicircle arch track 3 along ground circuit orbit 5.Ground circuit orbit 5 indicates the angle index value, and same, semicircle arch track 3 has angle index.Instrument stand 4 can be in semicircle arch track 3 slips and fixing, and the track angle index can readout equipment frame degree of tilt and direction.Two optic probes are housed on the instrument stand 4, and downward probe points to the ground in the track center of circle.
Fig. 2 is the instrument stand 2 that is placed on the arch track.Purpose is the reflected light of measuring from incident light in the sky and ground, reaches two probe optical axises and equates with the horizontal line angle.Consistent with reflected light and horizontal line angle in order to reach incident light at moving process, the structure of slip worm screw 26 and two the same rotary turbine is adopted in design, promptly goes up rotary turbine 24 and following rotary turbine 28.Last rotary turbine 24 and following rotary turbine 28 are separately positioned on the upper and lower position of slip worm screw 26.Last rotary turbine 24 connects upper arm 23, and following rotary turbine 28 connects underarm 212.The angle of upper arm 23 and slip worm screw 26 equals the angle of underarm 212 and slip worm screw 26.Adjust upper arm 23 and can make rotary turbine 24, slip worm screw 26 and following rotary turbine 28 cooperate worm gear drive, when slip worm screw 26 levels, upper arm 23 and underarm 212 equate with the horizontal line angle.During measurement, slide rail can drive underarm 212 move into place fixing after, because underarm 212 is to point to semi-circular arch shape track 3 centers of circle, therefore moving back slip worm screw 26 level angles changes, for slip worm screw 26 adjustment levels are measured, the angle that guarantees simultaneously upper arm 212 and slip worm screw 26 again equal the to slide angle of worm screw 26 and underarm 212, adopt the slip worm screw 26 rotary turbine drive mechanism the same with two, survey crew only need be adjusted upper arm 23, makes slip worm screw 26 maintenance levels get final product.
Main two optic probes 21 of instrument and 214 are fixed on upper arm 23 and the underarm 212 with probe stationary fixture 22 respectively.Slide rail 29 is parts of instrument, is associated in one with underarm 212.It drives instrument and slides on the arch track, and the back that puts in place is fixed on the arch track with butterfly key screw instrument.Reflected light probe 214 remains towards the center of circle of arch track, and electronic compass 213 is housed on arm 212, accurately measuring sonde 214 towards position angle and inclined in two-way angle.Horizontal bubble instrument 25 is installed on the slip worm screw 26, can judges whether level of slip worm screw 26 by horizontal bubble instrument 25.Slide rail drive underarm 212 move into place fixing after, adjust upper arm 23, make slip worm screw 26 get final product at horizontal level.
Principle of work of the present invention is: rotate so that different solar azimuths are measured with the reflection spoke brightness under the different zenith angles around the bottom by the arch support in the invention.Sensor probe is the spectral radiance detecting head, in order to measuring light field distribution and scattering properties.Detector is installed on the two-way albedo support, and the spectral radiance detecting head can rotate so that different solar azimuths are measured with the reflection spoke brightness under the different zenith angles around the bottom.There are 0 degree (probe is positioned at the sun plane of incidence, and is positive towards sun incident direction), 45 degree, 90 degree, 135 degree and 180 degree in the probe position angle that measurement is chosen, and the probe zenith angle is set 0 degree, 20 degree, 30 degree, 40 degree, 60 degree and 80 degree.As under situation about spending at position angle 0, measuring zenith angle is the bidirectional reflectance factors of 0 degree, 30 degree and 60 degree, and the bidirectional reflectance factor is defined as follows:
R
f(θ
0，θ，φ
0，φ，λ)＝πdI
r(θ
0，θ，φ
0，φ，λ)/dEs(λ)
Wherein θ is the zenith angle of instrument probe, and φ is the position angle of instrument probe, θ
0Be the zenith angle of the sun, φ
0Be the position angle of the sun, I
r(θ
0, θ, φ
0, φ λ) is catoptrical spoke brightness, E
s(λ) be the descending irradiance of sky.
The irradiance probe includes cosine light collector; Described optical fiber outlet comprises fibre-optical splice, sealing software pipe, and the optical fiber that fibre-optical splice connects picks out by sealing software pipe.
Claims (4)
1. the device for measuring bi-directional reflectance of ice layer of an optional position is characterized in that: comprise semicircle arch track, ground circuit orbit and instrument stand; Described semicircle arch track stands vertically setting, and match with the ground circuit orbit and be connected in semicircle arch track bottom, semicircle arch track can be rotated along the ground circuit orbit; Described instrument stand is located on the semicircle arch track, and can slide along semicircle arch track; Instrument stand comprises the slip worm screw, goes up rotary turbine and following rotary turbine; Last rotary turbine is identical with following rotary turbine and respectively be separately positioned on slip worm screw upper and lower position radially; Last rotary turbine is connected with upper arm, and following rotary turbine is connected with underarm; Adjust upper arm and can make rotary turbine, slip worm screw and following rotary turbine cooperate transmission, when slip worm screw level, upper arm and underarm equate with the horizontal line angle; Upper arm is provided with the first sensor probe; Underarm is provided with second sensor probe, and underarm is connected with semicircular track by slide rail, and underarm points to the center of circle of semicircle arch track; The optical axis homonymy at grade of the described first sensor probe and second sensor probe equates with the horizontal line angle, and second sensor probe under the horizontal line points to the semicircle arch track center of circle.
2. the device for measuring bi-directional reflectance of ice layer of optional position according to claim 1, it is characterized in that: two bottoms of described semicircle arch track are provided with " n " shape groove, described " n " shape groove and ground circuit orbit closely cooperate, and make semicircle arch track to slide along the ground circuit orbit.
3. the device for measuring bi-directional reflectance of ice layer of optional position according to claim 1, it is characterized in that: described semicircle arch track is spliced by some circular arcs, described slip worm screw is provided with horizontal bubble instrument, described ground circuit orbit and semicircle arch track are provided with angle index, and underarm is provided with electronic compass.
4. the device for measuring bi-directional reflectance of ice layer of optional position according to claim 3, it is characterized in that: described slide rail and semicircle arch track are fixed by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910193131 CN101672777B (en) | 2009-10-16 | 2009-10-16 | Device for measuring bi-directional reflectance of ice layer on any position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910193131 CN101672777B (en) | 2009-10-16 | 2009-10-16 | Device for measuring bi-directional reflectance of ice layer on any position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101672777A CN101672777A (en) | 2010-03-17 |
| CN101672777B true CN101672777B (en) | 2011-05-18 |
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ID=42020098
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910193131 Expired - Fee Related CN101672777B (en) | 2009-10-16 | 2009-10-16 | Device for measuring bi-directional reflectance of ice layer on any position |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136746B (en) * | 2015-07-17 | 2018-11-30 | 南京农业大学 | A kind of multispectral plant growth sensor spectrum reflectivity correction method |
| CN108507680A (en) * | 2017-02-24 | 2018-09-07 | 中国科学院地理科学与资源研究所 | A kind of thermal infrared directional emission temperature and hemisphere face radiation temperature data collection system device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690553A (en) * | 1979-06-29 | 1987-09-01 | Omron Tateisi Electronics Co. | Road surface condition detection system |
| US5243185A (en) * | 1992-07-31 | 1993-09-07 | Loral Aerospace Corp. | Apparatus and method for ice detection |
| CN1311861A (en) * | 1998-08-07 | 2001-09-05 | 约翰霍普金斯大学 | Radar ice sounder with parallel doppler processing |
-
2009
- 2009-10-16 CN CN 200910193131 patent/CN101672777B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690553A (en) * | 1979-06-29 | 1987-09-01 | Omron Tateisi Electronics Co. | Road surface condition detection system |
| US5243185A (en) * | 1992-07-31 | 1993-09-07 | Loral Aerospace Corp. | Apparatus and method for ice detection |
| CN1311861A (en) * | 1998-08-07 | 2001-09-05 | 约翰霍普金斯大学 | Radar ice sounder with parallel doppler processing |
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| Publication number | Publication date |
|---|---|
| CN101672777A (en) | 2010-03-17 |
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