CN103148844B - A kind of take total powerstation as the forest land sample trees repositioning method of instrument - Google Patents

Abstract

It take total powerstation as the forest land sample trees repositioning method of instrument that the present invention discloses a kind of, take total powerstation as the coordinate of every sample trees in instrument Measurement accuracy standing forest, every sample trees are listed numbering simultaneously, by PDA (Personal Digital Assistant, personal electric assistant) carry out data storage, when the information measurement of second time sample trees, total powerstation polar method is used to carry out sample trees reset, accurately find the sample trees losing numbering, losing problem for sample trees position in the work of forestry field investigation provides new technical method.

Description

A kind of take total powerstation as the forest land sample trees repositioning method of instrument

One, technical field

The present invention relates to sample trees resetting technique in a kind of forest survey, particularly utilize total powerstation to coordinate the sample trees repositioning method of PDA (Personal DigitalAssistant, personal electric assistant).

Two, technical background

In traditional measuring forest technological means, owing to needing to be grasped the details of every sample trees, therefore every sample trees to be numbered and fixing steel is listed at height of tree 1.3m place, be convenient to carry out repetition measurement to every sample trees next time simultaneously, but because repetition measurement is longer for interval time, often due to artificial or natural cause, loss of listing cannot confirm that sample trees are numbered, Forestry Investigation work is caused and affects significantly, but aobvious both at home and abroad there is the good method solving this problem.

The present invention obtains every sample trees coordinate information by using total powerstation, utilizes PDA (Personal Digital Assistant, personal electric assistant) to carry out data Storage and Processing simultaneously, adopts polar method to complete and resets to loss numbering sample trees.The method utilizes advanced surveying instrument, adopts polar coordinate method to complete accurate reset to sample trees, and method is efficient, simple and have degree of precision, efficiently solves sample trees reset issues in forest survey technique.

Three, summary of the invention

For solving the sample trees numbering loss problem occurred in Forestry Investigation repetition measurement, realize the accurate reset of forest land sample trees, the invention provides a kind of take total powerstation as the forest land sample trees repositioning method of instrument, it is characterized in that: first set up measurement control point at standing forest center O point, settle total powerstation, measurement of coordinates is carried out to every sample trees in standing forest, real-time storage is in PDA, when second time carries out sample trees information acquisition, find that the sample trees being numbered P are listed loss, these sample trees cannot be found, utilize reference mark O, 1. sample trees P and any sample trees A three coordinate information, utilize Polar Coordinate Model $\mathrm{\β}={\mathrm{\α}}_{\mathrm{OP}}-{\mathrm{\α}}_{\mathrm{OA}}=\arctan \left(\frac{y_P-y_O}{x_P-x_O}\right)-\arctan \left(\frac{y_A-y_O}{x_A-x_O}\right)$ With model 2. resolve OP and OA horizontal sextant angle β and OP distance S; Secondly at standing forest center O point erection total powerstation, make collimation telescope sample trees A and by horizontal angle zero setting, turn clockwise telescope β angle, ensure that telescope sight line overlaps with sample trees P direction line, then place prism in the direction in which, coordinate prism measuring distance, control prism according to instrument prompting and move forward and backward, until when reference mark O and prism distance are S, be with the sample trees of prism place same position the sample trees P losing and number and list.

This invention has the following advantages compared with the conventional method:

(1) significantly improve the work efficiency of sample trees measurement, in traditional trees factor investigation, measure and need to use instruments such as surveying chi, box compass, diameter of a cross-section of a tree trunk 1.3 meters above the ground chi, need registrar to carry out on-the-spot hand-kept, operation is loaded down with trivial details simultaneously.This research, using reflectorless total station as assize instrument, coordinates PDA to carry out field notes simultaneously, achieves the intellectuality of surveying instrument, integration, real-time, high reliability.Alleviate measurement operation intensity to a certain extent, expand the business scope of instrument of surveying and mapping.

(2) the accurate reset to forest land sample trees is achieved, PDA is coordinated accurately to measure and record sample trees coordinate information by total powerstation, when checking sample trees information, adopt polar coordinates computing method accurately to calculate to search and lose horizontal angle required for numbering sample trees and distance, thus complete the accurate reset to sample trees.

Four, accompanying drawing explanation

Below in conjunction with accompanying drawing and example, the present invention is further described.

Fig. 1 is sample trees reset schematic diagram.

Five, embodiment

The forest land sample trees repositioning method taking total powerstation as instrument is different from existing method, is specifically:

(1) measurement control point is set up at standing forest center O point, requiring that steel nail built by cement can persistence, settle reflectorless total station, measurement of coordinates is carried out to every sample trees in standing forest, in real-time storage to PDA, ensures every sample trees label and coordinate one_to_one corresponding simultaneously;

(2) when the information measurement of second time sample trees, find that the sample trees being numbered P are listed loss, cannot find these sample trees, utilize reference mark O, 1. sample trees P and any sample trees A three coordinate information, utilize Polar Coordinate Model $\mathrm{\β}={\mathrm{\α}}_{\mathrm{OP}}-{\mathrm{\α}}_{\mathrm{OA}}=\arctan \left(\frac{y_P-y_O}{x_P-x_O}\right)-\arctan \left(\frac{y_A-y_O}{x_A-x_O}\right)$ With model 2. $S=\sqrt{{(x_P-x_O)}^2+{(y_P-y_O)}^2}$ Resolve OP and OA horizontal sextant angle β and OP distance S;

(3) at standing forest center O point erection total powerstation, make collimation telescope sample trees A and by horizontal angle zero setting, turn clockwise telescope β angle, ensure that telescope sight line overlaps with sample trees P direction line, then place prism in the direction in which, in figure, P ' is the first placement location of prism, controls prism move forward and backward according to instrument prompting, until when reference mark O and prism distance are S, be now with the sample trees of prism place same position the sample trees P losing and number and list.

Claims (1)

1. one kind take total powerstation as the forest land sample trees repositioning method of instrument, it is characterized in that: the coordinate taking total powerstation as every sample trees in instrument Measurement accuracy standing forest, every sample trees are listed numbering simultaneously, by PDA (Personal Digital Assistant, personal electric assistant) carry out data storage, when the information measurement of second time sample trees, use total powerstation polar method to carry out sample trees reset, accurately find the sample trees losing numbering, concrete steps are as follows:

1) measurement control point is set up at standing forest center O point, settle total powerstation, measurement of coordinates is carried out to every sample trees in standing forest, real-time storage is in PDA, and second time is when carrying out sample trees information acquisition, and the sample trees finding to be numbered P are listed loss, these sample trees cannot be found, utilize reference mark O, 1. sample trees P and any sample trees A three coordinate information, utilize Polar Coordinate Model $\mathrm{\β}={\mathrm{\α}}_{\mathrm{OP}}-{\mathrm{\α}}_{\mathrm{OA}}=\arctan \left(\frac{y_P-y_O}{x_P-x_O}\right)-\arctan \left(\frac{y_A-y_O}{x_A-x_O}\right)$ Resolve OP and OA horizontal sextant angle β, utilize Polar Coordinate Model 2. $S=\sqrt{{(x_P-x_O)}^2+{(y_P-y_O)}^2}$ Resolve OP distance S;

2) at standing forest center O point erection total powerstation, make collimation telescope sample trees A and by horizontal angle zero setting, turn clockwise telescope β angle, ensure that telescope sight line overlaps with sample trees P direction line, then place prism in the direction in which, coordinate prism measuring distance, control prism according to instrument prompting and move forward and backward, until when reference mark O and prism distance are S, be with the sample trees of prism place same position the sample trees P losing and number and list.