CN201780372U - Directional reflectance measurement rod - Google Patents
Directional reflectance measurement rod Download PDFInfo
- Publication number
- CN201780372U CN201780372U CN2009202139494U CN200920213949U CN201780372U CN 201780372 U CN201780372 U CN 201780372U CN 2009202139494 U CN2009202139494 U CN 2009202139494U CN 200920213949 U CN200920213949 U CN 200920213949U CN 201780372 U CN201780372 U CN 201780372U
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- CN
- China
- Prior art keywords
- pointer
- sounding rod
- zenith angle
- probe
- surface reflection
- Prior art date
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- Expired - Fee Related
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
A directional reflectance measurement rod consists of a zenith angle adjusting system, an azimuth angle adjusting system and a measuring rod. The zenith angle adjusting system consists of a probe rotary disc, a pointer and a counter weight, and the zenith angle adjusting system is connected with the azimuth angle adjusting system via the measuring rod. The probe rotary disc is provided with zenith angle indicating scales and a probe fixing tube. An included angle between the probe rotary disc and the pointer is adjustable. The pointer is vertical upwards during measurement. The measurement rod is certainly long so as to reduce interference of reflection radiation from a measurer as much as possible.
Description
Technical field
The utility model relate to a kind of direction earth surface reflection than sounding rod (Directional REflectance MeasurementPole, DREMP).
Background technology
The face of land changes with the different of observed ray with incident to the reflection potential of incident radiation.When calibrating, need the earth surface reflection ratio under the instrumented satellite observation visual angle in rail remote sensor place.The first measuring vertical earth surface reflection ratio of general use, (Bidirectional Reflectance Distribution Function BRDF) is adapted to the vertical face of land reflectance method that the moonscope visual angle is located to use face of land bidirectional reflectance distribution function again.The method needs at first to determine face of land BRDF.Can pass through to measure ground apparent bearing reflectance from different perspectives, and then the method for the Coefficient Look-up Table of calculating BRDF kernel function obtains BRDF.
The BRDF measurement mechanism synoptic diagram that uses is at present seen Fig. 1 both at home and abroad.This device mainly is made up of azimuth circle track 21, circumzenithal arc path 22, servo-drive system 23, control system 24, radioactivity detection, identificationm, and computation 25.Under the control of control system 24, servo-drive system 23 is positioned under certain observation angle direction earth surface reflection ratio with measurement target with radioactivity detection, identificationm, and computation 25 along azimuth circle track 21 and circumzenithal arc path 22.General orbit radius is greater than 2 meters, and complete machine weight is greater than double centner, and installation and debugging are comparatively complicated time-consuming when using in the open air.
The method of the earth surface reflection ratio under the another kind of instrumented satellite observation visual angle is direct direction of measurement earth surface reflection ratio along the satellite visual angle.But need before and after passing by, finish on satellite the measurement of a plurality of points during owing to the place bracketing in 1 hour.The existing instrument of measuring the earth surface reflection ratio at regulation visual angle has only BRDF measurement bay above-mentioned at present, but can't satisfy the requirement of measuring many groups in the short time.
The utility model content
Portable demand when measuring for adapting to open-air large tracts of land place, under the prerequisite of relaxing the angle orientation precision, the utility model proposes a kind of direction earth surface reflection than sounding rod (Directional REflectance Measurement Pole, DREMP).One man operation under the condition of this sounding rod unpowered support in the open air, can conveniently determine take measurement of an angle (zenith angle and the position angle) of radiation-measurment equipment, to obtain specifying the direction reflectance at observation visual angle, simultaneously can be by a plurality of angles measure face of land BRDF.
DREMP of the present utility model mainly is made up of zenith angle regulating system, azimuth adjustment system, sounding rod.This system is mainly used in the direction reflection ratio measuring of target under the outdoor physical environment.
Wherein the zenith angle regulating system is made up of probe rotating disk, pointer and counterweight, and zenith angle indicating graduation and probe stationary pipes are arranged on the probe rotating disk; Horizontal bubble is installed on the pointer.Probe rotating disk and pointer are fixed by the zenith angle set bolt, and unclamping the zenith angle set bolt is that the angle that scalable is popped one's head between rotating disk and pointer concerns.The probe rotating disk links to each other with sounding rod by the bolt that is rotationally connected with pointer, and pointer is installed down counterweight, and the direction that guarantees pointer when measurement straight up.The probe rotating disk is fixed on the zenith angle place that needs with probe when measuring in the open air, and rocking that sounding rod is slight will not influence the zenith angle that probe is maintained fixed.
The azimuth adjustment system is made up of compass, the position angle when being used for fixing probe measurement.
Sounding rod is used for connecting zenith angle regulating system and azimuth adjustment system, has certain-length simultaneously to reduce the interference from gauger's reflected radiation as far as possible.
Description of drawings
By the utility model embodiment and in conjunction with the description of its accompanying drawing, can further understand purpose, specific structural features and the advantage of its invention.Wherein, accompanying drawing is:
Fig. 1 is the structural representation of the present BRDF measurement mechanism of using always;
Fig. 2 a is the front view of sounding rod of the present utility model;
Fig. 2 b is the vertical view of sounding rod of the present utility model;
Fig. 2 c is the rear view of sounding rod of the present utility model;
Fig. 2 d is the side view of sounding rod of the present utility model.
Embodiment
Below, 2a～2d describes in detail according to preferred embodiment of the present utility model in conjunction with the accompanying drawings.For convenience of description and highlight the utility model, omitted existing associated components in the prior art in the accompanying drawing, and will omit description these well-known components.
DREMP in the present embodiment is made up of zenith angle regulating system, azimuth adjustment system, sounding rod.
Wherein the zenith angle regulating system is made up of with counterweight 3 probe rotating disk 1, pointer 2, and zenith angle indicating graduation 4 and probe stationary pipes 5 are arranged on the probe rotating disk 1; Horizontal bubble 6 is installed on the pointer 2.Probe rotating disk 1 is fixing by zenith angle set bolt 7 with pointer 2, and the angle that unclamps zenith angle set bolt 7 and be scalable probe rotating disk 1 and 2 on pointer concerns.Probe rotating disk 1 links to each other with sounding rod 9 (referring to Fig. 2 b) by the bolt 8 that is rotationally connected with pointer 2, and pointer 2 times is installed counterweight 3, and the direction that guarantees pointer 2 when measurement straight up.Probe rotating disk 1 is fixed on the zenith angle place that needs with the probe of radiation meter when measuring in the open air, and rocking that sounding rod is slight can not influence the zenith angle that probe is maintained fixed.
The azimuth adjustment system is made up of compass 10, the position angle when being used for fixing the optical head measurement.
Sounding rod 9 is used for connecting zenith angle regulating system and azimuth adjustment system, has certain-length (more than or equal to 1.5 meters) simultaneously to reduce the interference from gauger's reflected radiation as far as possible.
At special occasions (as because wind is when causing counterweight to be difficult for stablize greatly), can zenith angle regulating system and sounding rod be fixed together by screwing rotating disk set bolt 11, guarantee the vertical of pointer by the gauger at this moment.
At first unclamp the zenith angle set bolt in use, regulate pointer scale, screw the zenith angle set bolt to the zenith angle that needs; Probe with radiation meter is fixed in the probe stationary pipes then; Again the sounding rod flush end is crossed chest, visual compass, the gauger suitably turns, and makes compass needle point to the position angle that requires, and regulates the angle of sounding rod, makes the horizontal bubble in the compass be positioned at the center, and this moment, the position angle adjusted was good.Because zenith angle can satisfy voluntarily, can begin this moment to measure.
Described in this instructions is several preferred embodiment of the present utility model, and above embodiment is only in order to the explanation the technical solution of the utility model but not to restriction of the present utility model.All those skilled in the art comply with design of the present utility model by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be within scope of the present utility model.
Claims (7)
1. a direction earth surface reflection compares sounding rod, form by zenith angle regulating system, azimuth adjustment system and sounding rod, it is characterized in that the zenith angle regulating system is made up of probe rotating disk, pointer and counterweight, the zenith angle regulating system is connected by sounding rod with the azimuth adjustment system.
2. direction earth surface reflection as claimed in claim 1 is characterized in that than sounding rod zenith angle indicating graduation and probe stationary pipes are arranged on the probe rotating disk.
3. direction earth surface reflection as claimed in claim 2 is characterized in that than sounding rod, horizontal bubble is installed on the pointer.
4. direction earth surface reflection as claimed in claim 3 is characterized in that than sounding rod probe rotating disk and pointer are fixed by the zenith angle set bolt, and unclamping the zenith angle set bolt is that the angle that scalable is popped one's head between rotating disk and pointer concerns.
5. direction earth surface reflection as claimed in claim 4 is characterized in that than sounding rod, and the probe rotating disk links to each other with sounding rod by the bolt that is rotationally connected with pointer, and pointer is installed counterweight down, and the direction that guarantees pointer when measurement straight up.
6. direction earth surface reflection as claimed in claim 5 is characterized in that than sounding rod the azimuth adjustment system is a compass.
7. direction earth surface reflection as claimed in claim 6 is characterized in that than sounding rod the length of sounding rod is more than or equal to 1.5 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202139494U CN201780372U (en) | 2009-11-20 | 2009-11-20 | Directional reflectance measurement rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202139494U CN201780372U (en) | 2009-11-20 | 2009-11-20 | Directional reflectance measurement rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201780372U true CN201780372U (en) | 2011-03-30 |
Family
ID=43793583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202139494U Expired - Fee Related CN201780372U (en) | 2009-11-20 | 2009-11-20 | Directional reflectance measurement rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201780372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109684712A (en) * | 2018-12-20 | 2019-04-26 | 国家卫星气象中心 | A kind of creation method, device, electronic equipment and the storage medium of BRDF model |
-
2009
- 2009-11-20 CN CN2009202139494U patent/CN201780372U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109684712A (en) * | 2018-12-20 | 2019-04-26 | 国家卫星气象中心 | A kind of creation method, device, electronic equipment and the storage medium of BRDF model |
| CN109684712B (en) * | 2018-12-20 | 2023-02-24 | 国家卫星气象中心 | BRDF (bidirectional reflectance distribution function) model creating method and device, electronic equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20131120 |