CN103808295B - A kind of method that uniform angle is measured for instrument with assize rifle - Google Patents
A kind of method that uniform angle is measured for instrument with assize rifle Download PDFInfo
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- CN103808295B CN103808295B CN201410076443.9A CN201410076443A CN103808295B CN 103808295 B CN103808295 B CN 103808295B CN 201410076443 A CN201410076443 A CN 201410076443A CN 103808295 B CN103808295 B CN 103808295B
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Abstract
The invention discloses a kind of method that uniform angle is measured for instrument with assize rifle.Being measured in forest individuality with assize rifle for instrument is with reference to the angle closing on two-by-two between trees with center tree, carries out data storage and process by computer, using bevel protractor computing formula, realizes the measuring and calculating of the individual Distribution Pattern of forest.Assize rifle is incorporated in uniform angle measurement, using assize rifle flexible Touchless manipulation advantage, angle between the individual trees two-by-two of forest in one standing forest of measurement, can facilitate and accurately measure the individual uniform angle of this forest, be forest management and forest assessment provides related data foundation.Overcome the blank of method in the individual Distribution Pattern's measuring and calculating of conventional forest, greatly reduce miscellaneous work amount and the measurement difficulty of interior field operation survey crew.
Description
First, technical field
The present invention relates to a kind of method that uniform angle is measured for instrument with assize rifle.
2nd, technical background
Traditional forest management inventory's system, the diameter of a cross-section of a tree trunk 1.3 meters above the ground of main investigation forest, the height of tree and accumulation and standing forest attribute
Statistical distribution (as diameter Distribution etc.) it is therefore an objective to for forest reserves condition survey service, and to forest stand spatial structure information and many
Sample information investigation is inadequate.According to the viewpoint of forest management and forest assessment, Mixed modes, Diameter differentiation, uniform angle are complete
The space structure of one standing forest of sign that can be appropriate is it might even be possible to here is suitable for the complicated standing forest of artificial implants on parameter basis
Structure.The tolerance of inter-species Mixed modes and ratio of stand has had the parameter that can use, and these parameters can be passed through
Ground investigation obtains.But the uniform angle for the individual Distribution Pattern of description, there is presently no simple and effective method.
Although both at home and abroad many researchs have been done to this, all successfully do not solve to obtain forest on the premise of not finding range
This difficult problem of Distribution Pattern on level ground, let alone by the individual distribution of sampling survey acquisition of information standing forest.This
Bright is to obtain data by using assize rifle, and carries out various effective process, by reach simplify field operation measurement, simultaneously using in terms of
Calculation machine carries out data storage and process, founding mathematical models, makes office work management more intelligent.This system combination tree breast diameter survey,
The multiple interior field operation processing functions such as range measurement, angular surveying, plane coordinates measurement are in one, the interior field process of General Promotion
Disposal ability.In interior field operation processing procedure, more intelligent and accuracy, effectively increase forest management and the forest reserves
The means of uniform angle factor measuring and calculating in the individual Distribution Pattern of examination technology, particularly forest.
3rd, content of the invention
For overcoming the blank of method in the individual Distribution Pattern's measuring and calculating of conventional forest, the miscellaneous work of interior field operation survey crew
Amount and measurement difficulty, it is forest individuality in a standing forest on instrument mensure level ground based on assize rifle that the present invention provides a kind of
The technical method of Distribution Pattern, is characterized in that：Being measured in forest individuality with assize rifle for instrument is with reference to two-by-two with center tree
Close on the angle between trees, data storage and process are carried out by computer, using bevel protractor computing formula, realize forest individual
Distribution Pattern measuring and calculating.
BROAD SUMMARY：
1. tree breast-height diameter, oblique distance, inclination angle and azimuth measurement
2. between setting two-by-two, angle measures
3. uniform angle factor measuring and calculating
This invention has advantages below compared with the conventional method：
(1) assize rifle is incorporated in uniform angle measurement, using assize rifle flexible Touchless manipulation advantage, measures one
Angle between the individual trees two-by-two of forest in standing forest, can facilitate and accurately measure the individual uniform angle of this forest, be gloomy
Lin manager and forest assessment provide related data foundation.
(2) overcome the blank of method in the individual Distribution Pattern's measuring and calculating of conventional forest, greatly reduce interior field operation measurement
The miscellaneous work amount of personnel and measurement difficulty.
4th, brief description
The present invention is further described with example below in conjunction with the accompanying drawings.
Tree and its nearest neighbor wood clamp angular measurement schematic diagram centered on Fig. 1
Fig. 2 is uniform angle instrumentation plan
5th, specific embodiment：
Measure the technical method of the individual Distribution Pattern of forest in a standing forest on level ground based on assize rifle for instrument
Implementation be characterized in particular in：
1) in standing forest, P point disposes assize rifle, at trunk 1.3m, using assize rifle, center tree is measured, pulls and pull
Machine record oblique distance L0, inclination angle δ0And azimuth angle alpha0, in real-time storage to computer；
2) keep assize rifle motionless in the position of P point, according to closure teeter clockwise, successively to other 4
The operation of tree repeat step 1, record oblique distance Li, inclination angle δ i and azimuth angle alpha i, i=1,2,3,4；
3) with P point as the center of circle, with the oblique distance of P point and center tree as x-axis, set up plane coordinate system, be utilized respectively mathematical model 1.Calculate the plane coordinates (X of center tree0, Y0),
d0Centered on tree the diameter of a cross-section of a tree trunk 1.3 meters above the ground；Using mathematical model 2.
Calculate the plane coordinates (X of other four treesi, Yi), diFor the diameter of a cross-section of a tree trunk 1.3 meters above the ground of other four trees, (Xp, Yp) for P point plane coordinates；
4) according to the cosine law 3. β=arccos ((c asking for during the angle of both sides2+b2-a2)/2bc), set up actual number
Learn model 4.Wherein S0, iCentered on tree with i-th tree plane sit
Target distance, S0, i+1Centered on tree with i+1 tree plane coordinates distance, SI, i+1For i-th tree and i+1 tree
The distance of plane coordinates, to obtain the angle between every two trees；
5) according to mathematical model 5.WhereinObtain
Uniform angle.
Claims (1)
1. a kind of method measuring uniform angle for instrument with assize rifle, is characterized in that：Individual for instrument measurement forest with assize rifle
In be with reference to the angle closing on two-by-two between trees with center tree, data storage and process are carried out by computer, using angle square
Degree computing formula, realizes the measuring and calculating of the individual Distribution Pattern of forest, comprises the following steps that：
1) in standing forest, P point disposes assize rifle, at trunk 1.3m, using assize rifle, center tree is measured, and cocking is remembered
Record oblique distance L0, inclination angle δ0And azimuth angle alpha0, in real-time storage to computer；
2) keep assize rifle motionless in the position of P point, according to closure teeter clockwise, successively to other 4 tree weights
The operation of multiple step 1, record oblique distance Li, inclination angle δ i and azimuth angle alpha i, i=1,2,3,4；
3) with P point as the center of circle, with the oblique distance of P point and center tree as x-axis, set up plane coordinate system, be utilized respectively mathematical model 1.Calculate the plane coordinates (X of center tree0, Y0),
d0Centered on tree the diameter of a cross-section of a tree trunk 1.3 meters above the ground；Using mathematical model 2.
Calculate the plane coordinates (X of other four treesi, Yi), diFor the diameter of a cross-section of a tree trunk 1.3 meters above the ground of other four trees, (Xp, Yp) for P point plane coordinates；
4) according to the cosine law 3. β=arccos ((c asking for during the angle of both sides2+b2-a2)/2bc), set up actual mathematical modulo
Type is 4.Wherein S0, iCentered on tree with i-th tree plane coordinates away from
From S0, i+1Centered on tree with i+1 tree plane coordinates distance, SI, i+1Plane for i-th tree and i+1 tree is sat
Target distance, to obtain the angle between every two trees；
5) according to mathematical model 5.WhereinObtain angle square
Degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410076443.9A CN103808295B (en) | 2014-03-04 | 2014-03-04 | A kind of method that uniform angle is measured for instrument with assize rifle |
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| CN201410076443.9A CN103808295B (en) | 2014-03-04 | 2014-03-04 | A kind of method that uniform angle is measured for instrument with assize rifle |
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| CN103808295A CN103808295A (en) | 2014-05-21 |
| CN103808295B true CN103808295B (en) | 2017-03-08 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104089554A (en) * | 2014-07-11 | 2014-10-08 | 北京林业大学 | Method for measuring forest structure parameters through angle gauge counting trees |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246521A (en) * | 2008-01-11 | 2008-08-20 | 中国林业科学研究院林业研究所 | Forest community point sampling investigation method |
| CN101349553A (en) * | 2008-06-27 | 2009-01-21 | 北京农学院 | Method for measuring tree mixing degree by common compass or theodolite |
| RU2416193C1 (en) * | 2009-09-09 | 2011-04-20 | Государственное образовательное учреждение высшего профессионального образования Марийский государственный технический университет | Method to make measurements in order to identify forest ravine profile |
| CN103542822A (en) * | 2013-10-08 | 2014-01-29 | 北京林业大学 | Method for measuring and calculating forest structure by using an electronic angle gauge function of tree measuring gun |
-
2014
- 2014-03-04 CN CN201410076443.9A patent/CN103808295B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246521A (en) * | 2008-01-11 | 2008-08-20 | 中国林业科学研究院林业研究所 | Forest community point sampling investigation method |
| CN101349553A (en) * | 2008-06-27 | 2009-01-21 | 北京农学院 | Method for measuring tree mixing degree by common compass or theodolite |
| RU2416193C1 (en) * | 2009-09-09 | 2011-04-20 | Государственное образовательное учреждение высшего профессионального образования Марийский государственный технический университет | Method to make measurements in order to identify forest ravine profile |
| CN103542822A (en) * | 2013-10-08 | 2014-01-29 | 北京林业大学 | Method for measuring and calculating forest structure by using an electronic angle gauge function of tree measuring gun |
Non-Patent Citations (1)
| Title |
|---|
| 手持式数字化多功能电子测树枪的研制与试验;徐伟恒等;《农业工程学报》;20130228;第29卷(第3期);第90-99页 * |
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