CN216386766U - Water leaving reflectivity measuring system - Google Patents
Water leaving reflectivity measuring system Download PDFInfo
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- CN216386766U CN216386766U CN202122550198.9U CN202122550198U CN216386766U CN 216386766 U CN216386766 U CN 216386766U CN 202122550198 U CN202122550198 U CN 202122550198U CN 216386766 U CN216386766 U CN 216386766U
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Abstract
The embodiment of the utility model provides an out-of-water reflectivity measuring system. Wherein, this system includes: the unmanned ship, the measuring device and the support frame; the measuring device comprises a measuring part and a signal acquisition part, wherein the signal acquisition part is electrically connected with the measuring part and comprises at least three probes for acquiring optical signals at a water surface measuring point; the supporting frame comprises a supporting part and a fixing part, wherein the supporting part is detachably connected with the fixing part and is rotatably arranged on the fixing part; the plane projection of the supporting part is positioned outside the unmanned ship; the fixing part is arranged on the unmanned ship; the signal acquisition part is arranged on the supporting part, and the longitudinal sections of the light receiving ends of the probes arranged on the supporting part are positioned on the same plane; the measuring part is used for generating the out-of-water reflectivity at the water surface measuring point according to the optical signal. The water leaving reflectivity measuring system can measure the water leaving reflectivity of a water body area which is inconvenient to reach by an operator.
Description
Technical Field
The utility model relates to the technical field of water color remote sensing, in particular to an off-water reflectivity measuring system.
Background
After the solar radiation is transmitted into the water body, part of the energy is absorbed by optical components such as suspended substances, chlorophyll and yellow substances in the water body and converted into heat energy to be retained in the water body, and the other part of the energy is scattered by the optical components of the water body to escape from the water surface, namely an out-of-water reflectivity signal. The water leaving reflectivity is one of the most commonly used water body apparent optical quantities in water color remote sensing and is also an important input parameter for water quality parameter inversion. When the water leaving reflectivity is measured, an operator is usually required to take a ship to reach a designated position to obtain water leaving reflectivity spectrum data, but the water leaving reflectivity cannot be measured in a water body area which cannot be reached by the operator.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide an out-of-water reflectivity measuring system which can measure out-of-water reflectivity of a water body area which is inconvenient for an operator to reach. The specific technical scheme is as follows:
the utility model provides an out-of-water reflectivity measuring system, comprising:
the unmanned ship, the measuring device and the support frame;
the measuring device comprises a measuring part and a signal acquisition part, wherein the signal acquisition part is electrically connected with the measuring part and comprises at least three probes for acquiring optical signals at a water surface measuring point; the optical signal comprises water body ascending radiance, skylight descending radiance and water surface descending irradiance;
the supporting frame comprises a supporting part and a fixing part, wherein the supporting part is detachably connected with the fixing part and is rotatably arranged on the fixing part;
the plane projection of the supporting part is positioned outside the unmanned ship; the fixing part is arranged on the unmanned ship; the signal acquisition part is arranged on the supporting part, and the longitudinal sections of the light receiving ends of the probes arranged on the supporting part are positioned on the same plane;
the measuring part is used for generating the out-of-water reflectivity at the water surface measuring point according to the optical signal.
Optionally, the support part specifically includes:
the first support rod, the second support rod, the third support rod and the connecting rod;
the first support rod, the second support rod and the third support rod are connected with the connecting rod, and the connecting rod is rotatably arranged on the fixing part; the probes are arranged on the first supporting rod, the second supporting rod and the third supporting rod;
the first support rod, the second support rod and the third support rod are positioned on the same plane, and the plane formed by the first support rod, the second support rod and the third support rod is vertical to the horizontal plane;
the second supporting rod is located between the first supporting rod and the third supporting rod, and the third supporting rod is perpendicular to the horizontal plane.
Optionally, the method further comprises:
a rotation mechanism;
the rotating mechanism is arranged on the connecting rod and can drive the connecting rod to rotate.
Optionally, the rotating mechanism specifically includes:
the device comprises a driving device, a rotating device and an angle calculating device;
the rotating device is arranged on the connecting rod, and the driving device is respectively connected with the rotating device and the measuring device; the angle calculation device is used for determining a rotation angle by utilizing the collected orientation information of the hull of the unmanned ship and the sunlight incidence angle information, and controlling the driving device to drive the rotating device to rotate based on the rotation angle so as to enable an included angle between a plane where a longitudinal section of the light receiving end of each probe is located and the sunlight incidence plane to be within a preset included angle range.
Optionally, the fixing portion specifically includes: a fastener and a support frame; the connecting rod passes through fastener with support frame rotatable coupling.
Optionally, the signal acquisition unit specifically includes:
a first radiance probe, a second radiance probe and an irradiance probe;
the first radiance probe is arranged on the first supporting rod, the second radiance probe is arranged on the second supporting rod, and the irradiance probe is arranged on the third supporting rod; the longitudinal section of the light receiving end of the first radiance probe, the longitudinal section of the light receiving end of the second radiance probe and the longitudinal section of the light receiving end of the irradiance probe are positioned on the same plane;
the first radiance probe, the second radiance probe and the irradiance probe are all connected with the measuring part; the first radiance probe is used for collecting water body ascending radiance, the second radiance probe is used for collecting skylight descending radiance, and the irradiance probe is used for collecting surface of water descending irradiance.
Optionally, the measuring part specifically includes:
the device comprises a first spectrometer, a second spectrometer, a third spectrometer and electronic equipment;
the first spectrometer is connected with the first radiance probe and used for obtaining uplink radiance spectral data according to the uplink radiance of the water body;
the second spectrometer is connected with the second radiance probe and used for obtaining downlink radiance spectrum data according to the skylight downlink radiance;
the third spectrometer is connected with the irradiance probe and used for obtaining downward irradiance spectrum data according to the downward irradiance on the water surface;
the first spectrometer, the second spectrometer and the third spectrometer are all connected with the electronic device, and the electronic device is used for generating the spectral data of the out-of-water reflectivity at the water surface measuring point according to the spectral data of the upward radiance, the spectral data of the downward radiance and the spectral data of the downward irradiance; the water-leaving reflectance spectral data includes a plurality of water-leaving reflectances in one-to-one correspondence with wavelengths.
Optionally, the method further comprises:
a video capture device;
the video acquisition device is arranged on the first supporting rod and used for acquiring image information of a water area.
Optionally, the method further comprises:
a navigation device;
the navigation equipment is located on the unmanned ship and connected with the electronic equipment, the navigation equipment is used for collecting position information of the unmanned ship, and the electronic equipment is used for controlling the unmanned ship to run to a water surface measuring point according to the position information.
Optionally, the preset included angle ranges from 90 degrees to 135 degrees; the included angle formed by the first supporting rod and the second supporting rod is larger than the included angle formed by the second supporting rod and the third supporting rod.
The embodiment of the utility model provides an off-water reflectivity measuring system, which comprises an unmanned ship, a measuring device and a supporting frame; the measuring device comprises a signal acquisition part and a measuring part, wherein the signal acquisition part comprises at least three probes for acquiring optical signals at a water surface measuring point, and the support frame comprises a supporting part and a fixing part; the supporting part and the fixed part are detachably connected and the supporting part is rotatably arranged on the fixed part, so that the included angle between the plane of the longitudinal section of each probe on the supporting part and the sunlight incidence plane can be adjusted, and the influence of solar flare on the measurement of the water leaving reflectivity is reduced. The plane projection of the supporting part is positioned outside the unmanned ship, so that the shadow of the unmanned ship and the influence of water waves around the unmanned ship on the optical signals at the water surface measuring point collected by the signal collecting part can be avoided. The measuring unit generates an out-of-water reflectance at the water surface measuring point from the optical signal. According to the utility model, the measurement device is arranged on the unmanned ship, so that the out-of-water reflectivity of the water body area which is inconvenient for operators to reach can be measured.
Of course, it is not necessary for any product or method of practicing the utility model to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of an embodiment of an off-water reflectance measurement system;
FIG. 2 is a schematic electrical connection provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of an included angle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model utilizes the characteristic that the unmanned ship can run to the water area which is not easy for a measurer to enter, the off-water reflectivity measuring device is arranged on the unmanned ship, the off-water reflectivity measurement of the water area which is inconvenient for the operator to reach can be realized, and the flexibility and the convenience of the measurement operation can be improved because the measurer does not need to take the ship to the water to carry out the on-site measurement.
The present invention provides a water-leaving reflectance measuring system, as shown in fig. 1-2, comprising: unmanned ship 1, measuring device 2 and support frame 3. The measuring device comprises a measuring part 21 and a signal acquisition part 22, wherein the signal acquisition part is electrically connected with the measuring part and comprises at least three probes for acquiring optical signals at a water surface measuring point; the optical signal comprises water body ascending radiance, skylight descending radiance and water surface descending irradiance. The supporting frame comprises a supporting part and a fixing part, wherein the supporting part is detachably connected with the fixing part and is rotatably arranged on the fixing part; the plane projection of the supporting part is positioned outside the unmanned ship; the fixing part is arranged on the unmanned ship; the signal acquisition part is arranged on the supporting part, and the longitudinal sections of the light receiving ends of the probes arranged on the supporting part are positioned on the same plane; the measuring part is used for generating the out-of-water reflectivity at the water surface measuring point according to the optical signal.
When the out-of-water reflectivity is measured, three probes are required to be used at the same time, wherein one radiance probe is used for measuring the up-going radiance of the water body, one radiance probe is used for measuring the down-going radiance of skylight, and one irradiance probe is used for measuring the down-going irradiance of the water surface; if more than three probes are installed, the data collected by the probes with the same function can be integrated, the data loss caused by the damage of one probe is avoided, and therefore the signal collecting part with at least three probes is installed on the supporting part for measurement. And the longitudinal sections of the light receiving ends of the probes arranged on the supporting part are ensured to be positioned on the same plane, so that the included angle between the plane and the sunlight incidence plane is adjusted by rotating the supporting part, and the influence of solar flare on the measurement of the off-water reflectivity is reduced. In addition, the plane projection of the supporting part is positioned outside the unmanned ship, so that the shadow of the unmanned ship and the influence of water waves around the unmanned ship on the optical signals at the water surface measuring point collected by the signal collecting part can be avoided.
As an alternative embodiment, the support portion includes: a first support bar 31, a second support bar 32, a third support bar 33, and a connecting bar 34. The first support rod, the second support rod and the third support rod are connected with a connecting rod, and the connecting rod is rotatably arranged on the fixing part; probes are arranged on the first supporting rod, the second supporting rod and the third supporting rod. The probes arranged on one supporting rod are probes with the same function, and the number of the probes arranged on one supporting rod can be 1 or more.
The first supporting rod, the second supporting rod and the third supporting rod are located on the same plane, and a plane formed by the first supporting rod, the second supporting rod and the third supporting rod is perpendicular to the horizontal plane. The three support rods are ensured to be positioned on the same plane, so that the longitudinal sections of the light receiving ends of the probes arranged on the support rods are positioned on the same plane. The second supporting rod is positioned between the first supporting rod and the third supporting rod, and the third supporting rod is vertical to the horizontal plane. Optionally, an included angle formed by the first supporting rod and the second supporting rod is larger than an included angle formed by the second supporting rod and the third supporting rod. The included angle formed by the first supporting rod and the second supporting rod ranges from 90 degrees to 110 degrees, and is preferably 100 degrees; the included angle between the second support bar and the third support bar is in the range of 30-50 degrees, and is preferably 40 degrees.
Of course, the supporting portion may further include a first arc rod 312 and a second arc rod 323 besides the first support rod, the second support rod and the third support rod, one end of the first arc rod is connected to the first support rod, the other end of the first arc rod is connected to the second support rod, one end of the second arc rod is connected to the second support rod, and the other end of the second arc rod is connected to the third support rod. The first arc-shaped bar 312 plays a role of supporting the first support bar and the second support bar, and the second arc-shaped bar 323 plays a role of supporting the second support bar and the third support bar.
As an optional implementation manner, the signal acquisition part includes: a first radiance probe 221, a second radiance probe 222, and an irradiance probe 223. The first radiance probe is arranged on the first supporting rod, the second radiance probe is arranged on the second supporting rod, and the irradiance probe is arranged on the third supporting rod; the longitudinal section of the light receiving end of the first radiance probe, the longitudinal section of the light receiving end of the second radiance probe and the longitudinal section of the light receiving end of the irradiance probe are positioned on the same plane. The first radiance probe, the second radiance probe and the irradiance probe are connected with the measuring part through optical fibers; the first radiance probe is used for collecting the up radiance of a water body, the second radiance probe is used for collecting the down radiance of skylight, and the irradiance probe is used for collecting the down irradiance of a water surface.
Optionally, the measuring part comprises: a first spectrometer 211, a second spectrometer 212, a third spectrometer 213, and electronics 214. The first spectrometer is connected with the first radiance probe through an optical fiber and used for obtaining uplink radiance spectral data according to the uplink radiance of the water body. The second spectrometer is connected with the second radiance probe through an optical fiber and used for obtaining downlink radiance spectral data according to the downlink radiance of the skylight. The third spectrometer is connected with the irradiance probe through an optical fiber and used for obtaining downward irradiance spectrum data according to the downward irradiance on the water surface. The first spectrometer, the second spectrometer and the third spectrometer are all connected with electronic equipment, and the electronic equipment is used for generating the spectral data of the out-of-water reflectivity at the water surface measuring point according to the uplink radiance spectral data, the downlink radiance spectral data and the downlink irradiance spectral data. The water-leaving reflectance spectral data includes a plurality of water-leaving reflectances in one-to-one correspondence with wavelengths, the wavelength range being 310nm to 900nm, one water-leaving reflectance for each wavelength.
When the out-of-water reflectivity is measured, the three probes simultaneously measure the radiant quantity to obtain the water body ascending radiance, the skylight descending radiance and the water surface descending irradiance, and the spectral ranges of the two radiance probes and the irradiance probe are 310nm-900 nm. The electronic device calculates the out-of-water reflectance using the following formula:
wherein Rrs (λ) is the water-leaving reflectance at a wavelength of λ, Lu(lambda) is the water up-run radiance at wavelength lambda, Lsky(λ) is the downlight radiance of the skylight at wavelength λ, Es(lambda) isIrradiance, r, of the water surface descending at wavelength λskyThe coefficient is determined according to the position of the sun, the included angle between the probe for measuring the downward radiance of the skylight and the irradiance probe and the wind speed and the wind direction, and when the included angle between the probe for measuring the downward radiance of the skylight and the irradiance probe (namely the observation zenith angle) is 40 degrees, r is calculated according to a Freenel formula to obtain rsky＝0.0245。
Because the probe does not need to be turned over when the water leaving reflectivity is measured, the influence of the change of an incident light field is avoided, and the water surface spectrum measurement can be instantly finished. The unmanned ship starts to measure the spectral data of the water leaving reflectivity after the water surface is stable, the spectrometer simultaneously obtains three probe data for 30-60 s, a plurality of spectral data are obtained through measurement, the measurement time exceeds a plurality of wave periods, and therefore the spectral data which are greatly influenced by the external environment can be eliminated during later data processing, and the accuracy of the water leaving reflectivity measurement is improved. After the measurement of one water surface measuring point is finished, the unmanned ship can automatically drive to another water surface measuring point to measure the out-of-water reflectivity.
As an optional embodiment, the fixing portion includes: a fastener 35 and a support bracket; the connecting rod passes through fastener and support frame rotatable coupling.
Optionally, the support frame comprises: horizontal bracket 36, vertical bracket 37 and inclined bracket 38. The bottom of the vertical support is arranged at the position, close to the stern, of the unmanned ship, the top of the vertical support and the top of the inclined support are both connected with the horizontal support, and the bottom of the inclined support is arranged at the position, close to the bow, of the unmanned ship. The length of the horizontal support is larger than the length of the unmanned ship, the plane projection of the head of the horizontal support is outside the plane projection of the unmanned ship, and the fastener is arranged at the head of the horizontal support. In order to improve the stability of the support frame, the support frame may further include a middle bracket 39, the bottom of the middle bracket is disposed in the middle of the hull, and the top of the middle bracket is connected with the horizontal bracket. Optionally, the horizontal support 36 has two parallel rods; the vertical bracket 37 and the intermediate bracket 39 each have two vertical rods and a horizontal rod connecting the two vertical rods, the horizontal rods and the rods of the horizontal bracket being on the same plane; the tilting bracket 38 has two tilting bars and a horizontal bar connecting the two tilting bars, the horizontal bar and the bar of the horizontal bracket being in the same plane. Of course, besides the supporting frame structure shown in fig. 1, the supporting frame may have various implementations, such as only using the inclined bracket as the supporting frame, or using the inclined bracket and the arc-shaped bracket to form the supporting frame, or using the tripod as the supporting frame.
In order to reduce the influence of solar flare on the measurement of the off-water reflectivity, the included angle between the plane of the longitudinal section of the light receiving end of each probe and the sunlight incident plane needs to be adjusted within a preset included angle range, when the preset included angle range is 90-140 degrees, the influence of the solar flare can be effectively reduced, and when the included angle between the plane of the longitudinal section of the light receiving end of each probe and the sunlight incident plane is 135 degrees, the included angle is the optimal angle, so that the influence of the solar flare can be reduced, and the difference of the off-water radiance brightness observed by the cross section is small. Fig. 3 is a schematic diagram showing an included angle between a sunlight incident plane and a longitudinal section of a light receiving end of the probe, and fig. 3 is a top view of the water-leaving reflectivity measuring system. The angle can be adjusted in two ways, wherein an alternative mode is to manually adjust the angle before the unmanned ship starts, and another alternative mode is to automatically adjust the angle when the unmanned ship runs.
When the included angle between the plane of the longitudinal section of the light receiving end of each probe and the sunlight incidence plane is manually adjusted, before the unmanned ship starts, the included angle between the plane formed by the first supporting rod, the second supporting rod and the third supporting rod and the sunlight incidence plane is manually rotated to be within the preset included angle range, when the included angle is within the preset included angle range, the included angle between the plane of the longitudinal section of the light receiving end of each probe arranged on each supporting rod and the sunlight incidence plane can be further ensured to be within the preset included angle range, and at the moment, the connecting rod is fixed by the fastening piece of the fixing part.
When the included angle between the plane of the longitudinal section of the light receiving end of each probe and the sunlight incidence plane is automatically adjusted, a rotating mechanism is arranged in the off-water reflectivity measuring system and is arranged on a connecting rod, and the rotating mechanism can drive the connecting rod to rotate, so that the included angle between the plane formed by the first supporting rod, the second supporting rod and the third supporting rod and the sunlight incidence plane is within the range of a preset included angle.
Optionally, the rotation mechanism comprises: a driving device 41, a rotating device 42 and an angle calculating device. The driving device and the angle calculating device are arranged on the unmanned ship. The rotating device is arranged on the connecting rod, and the driving device is respectively connected with the rotating device and the measuring device. The angle calculation device is used for determining a rotation angle by utilizing the collected orientation information of the unmanned ship body and the sunlight incidence angle information, and controlling the driving device to drive the rotating device to rotate based on the rotation angle so that an included angle between a plane where a longitudinal section of the light receiving end of each probe is located and the sunlight incidence plane is within a preset included angle range. Optionally, the angle calculation means comprises angle measurement means 43 and electronics 214; the angle measuring device is connected with the electronic equipment, the electronic equipment is connected with the driving device, and the driving device is connected with the rotating device; the angle measuring device is used for collecting the azimuth information and the sunlight incident angle information of the unmanned ship body; the electronic equipment is used for determining a rotation angle according to the azimuth information of the unmanned ship body and the sunlight incidence angle information, and controlling the driving device to drive the rotating device to rotate based on the rotation angle. Of course, the angle calculation device may also integrate the angle measurement device and the electronics in one device.
As an optional embodiment, the water-leaving reflectance measuring system further comprises: and a video acquisition device 5. The video acquisition device is arranged on the first supporting rod and used for acquiring image information of a water area. Optionally, the video capture device is connected to an electronic device, and the electronic device is configured to store the water image information captured by the video capture device. When the data abnormal condition occurs in the water-leaving reflectivity spectrum data, the reason for the abnormal condition can be further analyzed through the water area image information. Of course, a plurality of video acquisition devices can be arranged, and other video acquisition devices except the video acquisition device arranged on the first supporting rod acquire environmental information, so that the following operators can observe the surrounding conditions of the water area conveniently.
As an optional embodiment, the water-leaving reflectance measuring system further comprises: a navigation device 6. The navigation equipment is located on the unmanned ship and connected with the electronic equipment, the navigation equipment is used for collecting position information of the unmanned ship, and the electronic equipment is used for controlling the unmanned ship to run to a water surface measuring point according to the position information.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. An off-water reflectance measurement system, comprising:
the unmanned ship, the measuring device and the support frame;
the measuring device comprises a measuring part and a signal acquisition part, wherein the signal acquisition part is electrically connected with the measuring part and comprises at least three probes for acquiring optical signals at a water surface measuring point; the optical signal comprises water body ascending radiance, skylight descending radiance and water surface descending irradiance;
the supporting frame comprises a supporting part and a fixing part, wherein the supporting part is detachably connected with the fixing part and is rotatably arranged on the fixing part;
the plane projection of the supporting part is positioned outside the unmanned ship; the fixing part is arranged on the unmanned ship; the signal acquisition part is arranged on the supporting part, and the longitudinal sections of the light receiving ends of the probes arranged on the supporting part are positioned on the same plane;
the measuring part is used for generating the out-of-water reflectivity at the water surface measuring point according to the optical signal.
2. The system according to claim 1, wherein the support comprises:
the first support rod, the second support rod, the third support rod and the connecting rod;
the first support rod, the second support rod and the third support rod are connected with the connecting rod, and the connecting rod is rotatably arranged on the fixing part; the probes are arranged on the first supporting rod, the second supporting rod and the third supporting rod;
the first support rod, the second support rod and the third support rod are positioned on the same plane, and the plane formed by the first support rod, the second support rod and the third support rod is vertical to the horizontal plane;
the second supporting rod is located between the first supporting rod and the third supporting rod, and the third supporting rod is perpendicular to the horizontal plane.
3. The away-water reflectance measurement system according to claim 2, further comprising:
a rotation mechanism;
the rotating mechanism is arranged on the connecting rod and can drive the connecting rod to rotate.
4. The system according to claim 3, wherein the rotation mechanism comprises:
the device comprises a driving device, a rotating device and an angle calculating device;
the rotating device is arranged on the connecting rod, and the driving device is respectively connected with the rotating device and the measuring device; the angle calculation device is used for determining a rotation angle by utilizing the collected orientation information of the hull of the unmanned ship and the sunlight incidence angle information, and controlling the driving device to drive the rotating device to rotate based on the rotation angle so as to enable an included angle between a plane where a longitudinal section of the light receiving end of each probe is located and the sunlight incidence plane to be within a preset included angle range.
5. The system according to claim 2, wherein the fixing portion comprises: a fastener and a support frame; the connecting rod passes through fastener with support frame rotatable coupling.
6. The system for measuring an out-of-water reflectance according to claim 2, wherein the signal collection unit specifically comprises:
a first radiance probe, a second radiance probe and an irradiance probe;
the first radiance probe is arranged on the first supporting rod, the second radiance probe is arranged on the second supporting rod, and the irradiance probe is arranged on the third supporting rod; the longitudinal section of the light receiving end of the first radiance probe, the longitudinal section of the light receiving end of the second radiance probe and the longitudinal section of the light receiving end of the irradiance probe are positioned on the same plane;
the first radiance probe, the second radiance probe and the irradiance probe are all connected with the measuring part; the first radiance probe is used for collecting water body ascending radiance, the second radiance probe is used for collecting skylight descending radiance, and the irradiance probe is used for collecting surface of water descending irradiance.
7. The system according to claim 6, wherein the measuring unit includes:
the device comprises a first spectrometer, a second spectrometer, a third spectrometer and electronic equipment;
the first spectrometer is connected with the first radiance probe and used for obtaining uplink radiance spectral data according to the uplink radiance of the water body;
the second spectrometer is connected with the second radiance probe and used for obtaining downlink radiance spectrum data according to the skylight downlink radiance;
the third spectrometer is connected with the irradiance probe and used for obtaining downward irradiance spectrum data according to the downward irradiance on the water surface;
the first spectrometer, the second spectrometer and the third spectrometer are all connected with the electronic device, and the electronic device is used for generating the spectral data of the out-of-water reflectivity at the water surface measuring point according to the spectral data of the upward radiance, the spectral data of the downward radiance and the spectral data of the downward irradiance; the water-leaving reflectance spectral data includes a plurality of water-leaving reflectances in one-to-one correspondence with wavelengths.
8. The away-water reflectance measurement system according to claim 2, further comprising:
a video capture device;
the video acquisition device is arranged on the first supporting rod and used for acquiring image information of a water area.
9. The away-water reflectance measurement system according to claim 7, further comprising:
a navigation device;
the navigation equipment is located on the unmanned ship and connected with the electronic equipment, the navigation equipment is used for collecting position information of the unmanned ship, and the electronic equipment is used for controlling the unmanned ship to run to a water surface measuring point according to the position information.
10. The system of claim 4, wherein the predetermined included angle is in the range of 90 ° -135 °; the included angle formed by the first supporting rod and the second supporting rod is larger than the included angle formed by the second supporting rod and the third supporting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550198.9U CN216386766U (en) | 2021-10-22 | 2021-10-22 | Water leaving reflectivity measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122550198.9U CN216386766U (en) | 2021-10-22 | 2021-10-22 | Water leaving reflectivity measuring system |
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| CN216386766U true CN216386766U (en) | 2022-04-26 |
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| CN202122550198.9U Active CN216386766U (en) | 2021-10-22 | 2021-10-22 | Water leaving reflectivity measuring system |
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2021
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