CN105136127A - Measuring method and system for surface features and terrain - Google Patents

Measuring method and system for surface features and terrain Download PDF

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Publication number
CN105136127A
CN105136127A CN201510450795.0A CN201510450795A CN105136127A CN 105136127 A CN105136127 A CN 105136127A CN 201510450795 A CN201510450795 A CN 201510450795A CN 105136127 A CN105136127 A CN 105136127A
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prism
point
total powerstation
tested point
measuring
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CN105136127B (en
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杨光
张�荣
林鸿
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Guangzhou Urban Planning Survey and Design Institute
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Guangzhou Urban Planning Survey and Design Institute
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002Active optical surveying means

Abstract

The invention discloses a measuring method for surface features and terrain. The method comprises the following steps that: a total station receives communication requests of a prism and establishes communication links with the prism, wherein the total station is erected at a starting point with known position, the prism is erected at a to-be-measured point, and the starting point and the to-be-measured point maintain intervisibility; the total station receives prism erection height and surface feature information of the to-be-measured point sent by the prism; the total station measures and calculates 3D coordinates of the to-be-measured point according to the prism erection height; the total station stores and outputs the surface feature information and three-dimensional coordinates of the to-be-measured point. Accordingly, the invention also discloses a measuring system for the surface features and terrain. With the measuring method and the measuring system provided by embodiments of the invention, acquisition efficiency and measuring accuracy of the surface features and terrain of the to-be-measured point can be improved.

Description

A kind of measuring method of atural object landform and system
Technical field
The present invention relates to Geodetic Technique field, particularly relate to a kind of measuring method and system of atural object landform.
Background technology
The atural object such as building, road, urban operating mechanism, boundary and massif, water system, landforms, vegetation, topographic entity are the carrying objects of the Activities such as human survival, production and construction.Along with socioeconomic development, all trades and professions for spatial positional information demand more and more accurately and extensively, quick, the precise acquisition of atural object, landform planimetric position and elevation information have become one of them key link.
At present, existing atural object topographical surveying generally adopts total powerstation, stadimeter or transit etc. to carry out a position and gathers, and its measuring method is unidirectional mode, is namely directly measured tested point by total powerstation.This measuring method not only causes Acquire and process mode operations efficiency lower, is difficult to the terrestrial object information directly obtaining tested point, and by manual intervention more, measuring accuracy is easily influenced.Meanwhile, this measuring method has higher technical requirement to survey crew, causes widespread popularity poor to a certain extent.
Summary of the invention
The embodiment of the present invention proposes a kind of measuring method and system of atural object landform, can improve collecting efficiency and the measuring accuracy of tested point place atural object landform.
The embodiment of the present invention provides a kind of measuring method of atural object landform, comprising:
Total powerstation receives the communication request of prism, sets up communication linkage with described prism; Described total powerstation is erected at known Fixed Initial Point place, position, and described prism holder is located at tested point place; Described Fixed Initial Point and described tested point keep intervisibility;
Described total powerstation receives the prism antenna height of described prism transmission and the terrestrial object information of described tested point;
Described total powerstation, according to described prism antenna height, is measured and calculates the three-dimensional coordinate of described tested point;
Described total powerstation is preserved and is exported terrestrial object information and the three-dimensional coordinate of described tested point.
Further, described total powerstation is according to described prism antenna height, and the three-dimensional coordinate of tested point described in survey calculation, specifically comprises:
Obtain the direction point B preset 1planimetric coordinates (X b, Y b); Described direction point B 1intervisibility is kept with described Fixed Initial Point;
Measure B 1p 0rotate clockwise P 0r ilevel angle α i, P 0r iand the vertical angle β between surface level iand P 0r ilength S i; Described total powerstation is set to a P 0, described prism is set to a R i, B 1p 0for the line of described direction point and described total powerstation, P 0r ifor the line of described total powerstation and described prism;
According to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point.
Further, described according to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point, specifically comprise:
According to described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, adopt planimetric coordinates computing formula, calculate the planimetric coordinates (X obtaining described tested point i, Y i); Wherein, described planimetric coordinates computing formula is as follows:
X i=X P+S i×cosβ i×cos(A P-Bi);
Y i=Y P+S i×cosβ i×sin(A P-Bi);
sgn ( Y B - Y P ) = { 1 , Y B - Y P > 0 0 , Y B - Y P = 0 - 1 , Y B - Y P < 0 ;
According to the height Z of described Fixed Initial Point p, described length S i, described vertical angle β i, described total powerstation antenna height h pwith described prism antenna height j i, adopt high computational formula, calculate the elevation coordinate Z obtaining described tested point i; Wherein, described high computational formula is as follows:
Z i=Z P+S i×sinβ i+H P-j i
Obtain the three-dimensional coordinate (X of described tested point i, Y i, Z i).
Further, preserve at described total powerstation and after the terrestrial object information exporting described tested point and three-dimensional coordinate, also comprise:
Described total powerstation sends communication to described prism and turns off instruction, disconnects the communication linkage with described prism.
Preferably, the terrestrial object information of described tested point comprises the image of the title of described tested point, terrain object attribute coding and the described tested point that collects of described prism and periphery thereof.
Accordingly, the embodiment of the present invention also provides a kind of measuring system of atural object landform, comprises total powerstation and prism; Described total powerstation is erected at known Fixed Initial Point place, position, and described prism holder is located at tested point place; Described Fixed Initial Point and described tested point keep intervisibility;
Described total powerstation comprises:
Communication request receiver module, for receiving the communication request of described prism, sets up communication linkage with described prism;
Information receiving module, for receiving the prism antenna height and the terrestrial object information of described tested point that described prism sends;
Measurement of coordinates module, for according to described prism antenna height, measures and calculates the three-dimensional coordinate of described tested point; And,
Message output module, for preserving and exporting terrestrial object information and the three-dimensional coordinate of described tested point.
Further, described measurement of coordinates module specifically comprises:
Direction point acquiring unit, for obtaining default direction point B 1planimetric coordinates (X b, Y b); Described direction point B 1intervisibility is kept with described Fixed Initial Point;
Measuring unit, for measuring B 1p 0rotate clockwise P 0r ilevel angle α i, P 0r iand the vertical angle β between surface level iand P 0r ilength S i; Described total powerstation is set to a P 0, described prism is set to a R i, B 1p 0for the line of described direction point and described total powerstation, P 0r ifor the line of described total powerstation and described prism; And,
Computing unit, for according to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point.
Further, described computing unit specifically comprises:
Planimetric coordinates computation subunit, for according to described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, adopt planimetric coordinates computing formula, calculate the planimetric coordinates (X obtaining described tested point i, Y i); Wherein, described planimetric coordinates computing formula is as follows:
X i=X P+S i×cosβ i×cos(A P-Bi);
Y i=Y P+S i×cosβ i×sin(A P-Bi);
sgn ( Y B - Y P ) = { 1 , Y B - Y P > 0 0 , Y B - Y P = 0 - 1 , Y B - Y P < 0 ; And,
Elevation coordinate computation subunit, for the height Z according to described Fixed Initial Point p, described length S i, described vertical angle β i, described total powerstation antenna height h pwith described prism antenna height j i, adopt high computational formula, calculate the elevation coordinate Z obtaining described tested point i; Wherein, described high computational formula is as follows:
Z i=Z P+S i×sinβ i+H P-j i
Three-dimensional coordinate obtains subelement, for obtaining the three-dimensional coordinate (X of described tested point i, Y i, Z i).
Further, described total powerstation also comprises communication shutoff module;
Described communication turns off module and is used for sending communication shutoff instruction to described prism, disconnects the communication linkage with described prism.
Preferably, the terrestrial object information of described tested point comprises the image of the title of described tested point, terrain object attribute coding and the described tested point that collects of described prism and periphery thereof.
Implement the embodiment of the present invention, there is following beneficial effect:
The measuring method of the atural object landform that the embodiment of the present invention provides and system, the communication connection of total powerstation and prism can be set up, make prism that the atural object landform relevant information of tested point is directly sent to total powerstation, realize quick, the precise acquisition of total powerstation to tested point place atural object landform, the fields such as locus is determined, construction work, municipal public use, communication navigation, mapping, public safety, mobile location-based service, water conservancy, agriculture and forestry can be widely used in; The image of the tested point that the title of tested point, terrain object attribute coding and prism collect by prism and periphery thereof directly sends to total powerstation, is conducive to user when the atural object terrain rendering topomap measured by utilizing as auxiliary reference.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of an embodiment of the measuring method of atural object landform provided by the invention;
Fig. 2 is a schematic diagram of total station survey in the measuring method of atural object landform provided by the invention;
Fig. 3 is another schematic diagram of total station survey in the measuring method of atural object landform provided by the invention;
Fig. 4 is the structural representation of an embodiment of the measuring system of atural object landform provided by the invention;
Fig. 5 is the structural representation of another embodiment of the measuring system of atural object landform provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, be the schematic flow sheet of an embodiment of the measuring method of atural object landform provided by the invention, comprise:
S1, total powerstation receive the communication request of prism, set up communication linkage with described prism; Described total powerstation is erected at known Fixed Initial Point place, position, and described prism holder is located at tested point place; Described Fixed Initial Point and described tested point keep intervisibility;
S2, described total powerstation receive the prism antenna height of described prism transmission and the terrestrial object information of described tested point;
S3, described total powerstation, according to described prism antenna height, are measured and calculate the three-dimensional coordinate of described tested point;
S4, described total powerstation are preserved and are exported terrestrial object information and the three-dimensional coordinate of described tested point.
Wherein, as shown in Figure 3, Fixed Initial Point P is the Fixed Initial Point of the three-dimensional coordinate of all tested points, should have known accurate three-dimensional coordinate (X p, Y p, Z p).If there is no the some position of known coordinate as Fixed Initial Point, the modes such as satellite precise location or tracerse survey can be adopted in advance to ask for Fixed Initial Point three-dimensional coordinate.In addition, be keep and intervisibility to be measured, the higher some position of general chosen position is as Fixed Initial Point.
Total powerstation is a kind of common apparatus adopting electromagnetic distance measurement and the angle measurement of electronics scale.Total powerstation can adopt type of automatically the sighting product of band intelligent operating system, as TOPCONGPT-9000A, TimbleS6 or SOKKIAM series etc.The total powerstation of current domestic and international all series substantially all has the bidirectional data communication instruction of complete set, guarantees that total powerstation carries out exchanges data by internal processes and external unit.After Fixed Initial Point place erection total powerstation, measure the height h of total powerstation pand stored in total powerstation.
Reflecting prism is a kind of common device, is set up in tested point place, assists total station survey angle and distance to obtain the landform of tested point by reflection electromagnetic wave.The prism adopted in the present embodiment increases radio transmission apparatus in existing reflecting prism, realizes the communication with total powerstation by the communication such as wireless data sending, GPRS, CDMA or Wifi.After tested point place erection prism, measure the height j of prism iand stored in prism.
When measuring, prism sends the communication request of " ready " to total powerstation by wireless signal, after total powerstation replys this communication request, set up bi-directional communication links with this prism.After link is set up, the terrestrial object information of tested point is directly sent to total powerstation by prism, meanwhile, by prism height j itotal powerstation is sent to measure for total powerstation.The terrestrial object information of tested point and three-dimensional coordinate, after measuring the three-dimensional coordinate of tested point, are preserved and export by total powerstation, to carry out showing or applying.
Preferably, the terrestrial object information of described tested point comprises the image of the title of described tested point, terrain object attribute coding and the described tested point that collects of described prism and periphery thereof.
Title, the terrain object attribute of total powerstation automatic reception tested point are encoded and image.Wherein, terrain object attribute is encoded to the character string of particular number of bits, for identifying the attributive character of this atural object, as building, river, steep bank etc.In order to just with transmission, by prism send data encode, coded format be " * prism ID, * title, * terrain object attribute coding, * prism is high, * image ".Wherein, * is data segment identifier.Total powerstation, after these data of reception, is analyzed by data segment identifier, therefrom extracts the information such as the high and image of prism ID, roll-call, attribute, prism respectively.
The atural object terrain information of all tested points can be shown directly to user or apply it, and terrain object attribute coding and the image collected can when drawing the topomap of tested point as auxiliary references.
Further, described total powerstation is according to described prism antenna height, and the three-dimensional coordinate of tested point described in survey calculation, specifically comprises:
Obtain the direction point B preset 1planimetric coordinates (X b, Y b); Described direction point B 1intervisibility is kept with described Fixed Initial Point;
Measure B 1p 0rotate clockwise P 0r ilevel angle α i, P 0r iand the vertical angle β between surface level iand P 0r ilength S i; Described total powerstation is set to a P 0, described prism is set to a R i, B 1p 0for the line of described direction point and described total powerstation, P 0r ifor the line of described total powerstation and described prism;
According to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point.
It should be noted that, before measuring, also need to arrange a direction point B 1, as shown in Figure 2, and known this direction point B 1planimetric coordinates (X b, Y b).Wherein, planimetric coordinates is the coordinate on surface level.Meanwhile, at direction point B 1upper erection prism, facilitates total powerstation to measure.
Further, described according to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point, specifically comprise:
According to described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, adopt planimetric coordinates computing formula, calculate the planimetric coordinates (X obtaining described tested point i, Y i); Wherein, described planimetric coordinates computing formula is as follows:
X i=X P+S i×cosβ i×cos(A P-Bi);
Y i=Y P+S i×cosβ i×sin(A P-Bi);
sgn ( Y B - Y P ) = { 1 , Y B - Y P > 0 0 , Y B - Y P = 0 - 1 , Y B - Y P < 0 ;
According to the height Z of described Fixed Initial Point p, described length S i, described vertical angle β i, described total powerstation antenna height h pwith described prism antenna height j i, adopt high computational formula, calculate the elevation coordinate Z obtaining described tested point i; Wherein, described high computational formula is as follows:
Z i=Z P+S i×sinβ i+H P-j i
Obtain the three-dimensional coordinate (X of described tested point i, Y i, Z i).
When measuring, as shown in Figures 2 and 3, total powerstation is successively to B 1-P 0-R ihorizontal sextant angle α i, P 0r ivertical angle β between line and surface level iwith a P 0to a R ibetween distance measure, the three-dimensional coordinate (X of tested point R can be calculated according to the value measured i, Y i, Z i).In planimetric coordinates computing formula, A p-Bfor P 0b 1the grid azimuth of line, namely from P 0the north pointer direction line of point rises, and rotates to P in the direction of the clock 0b 1the level angle of line.Sgn, for getting sign function, namely works as Y b-Y pwhen being greater than 0, function returns 1, Y b-Y pwhen equaling 0, function returns 0, Y b-Y pwhen being less than 0, function returns-1.
Further, preserve at described total powerstation and after the terrestrial object information exporting described tested point and three-dimensional coordinate, also comprise:
Described total powerstation sends communication to described prism and turns off instruction, disconnects the communication linkage with described prism.
After measurement, the communication that total powerstation sends " measuring complete " to prism turns off instruction, disconnects the communication linkage with described prism.After prism receives this communication shutoff instruction, state of deactivating, extinguishes its relay indicating light, this prism holder can be located at other tested point measure to point out survey crew.
After the measurement completing a tested point, total powerstation replys next tested point, sets up communication linkage with the prism of next tested point, and total powerstation continues the atural object landform measuring this tested point.And so forth, final three-dimensional coordinate and the terrestrial object information obtaining all tested points in appointed area.
The measuring method of the atural object landform that the embodiment of the present invention provides, the communication connection of total powerstation and prism can be set up, make prism that the atural object landform relevant information of tested point is directly sent to total powerstation, realize quick, the precise acquisition of total powerstation to tested point place atural object landform, the fields such as locus is determined, construction work, municipal public use, communication navigation, mapping, public safety, mobile location-based service, water conservancy, agriculture and forestry can be widely used in; The image of the tested point that the title of tested point, terrain object attribute coding and prism collect by prism and periphery thereof directly sends to total powerstation, is conducive to user when the atural object terrain rendering topomap measured by utilizing as auxiliary reference.
Accordingly, the present invention also provides a kind of measuring system of atural object landform, can realize all flow processs of the measuring method of the atural object landform in above-described embodiment.
See Fig. 4, be the structural representation of an embodiment of the measuring system of atural object landform provided by the invention, comprise total powerstation 1 and prism 2; Described total powerstation 1 is erected at known Fixed Initial Point place, position, and described prism 2 is erected at tested point place; Described Fixed Initial Point and described tested point keep intervisibility;
Described total powerstation 1 comprises:
Communication request receiver module 11, for receiving the communication request of described prism 2, sets up communication linkage with described prism 2;
Information receiving module 12, for receiving the prism antenna height and the terrestrial object information of described tested point that described prism 2 sends;
Measurement of coordinates module 13, for according to described prism antenna height, measures and calculates the three-dimensional coordinate of described tested point; And,
Message output module 14, for preserving and exporting terrestrial object information and the three-dimensional coordinate of described tested point.
Preferably, the terrestrial object information of described tested point comprises the image of the title of described tested point, terrain object attribute coding and the described tested point that collects of described prism and periphery thereof.
In the present embodiment, prism 2 comprises radio transmission apparatus, control store, wide-angle CCD camera and LED relay indicating light.Wherein, radio transmission apparatus adopts the wireless data transmission module that technology is comparatively ripe, and it can reach more than 1km in outdoor transmissions distance.Control store adopts PDA or industrial handbook, and it is controlled radio transmission apparatus and CCD camera by serial ports and USB interface, and controls the switch of LED relay indicating light.
Further, described measurement of coordinates module 13 specifically comprises:
Direction point acquiring unit, for obtaining default direction point B 1planimetric coordinates (X b, Y b); Described direction point B 1intervisibility is kept with described Fixed Initial Point;
Measuring unit, for measuring B 1p 0rotate clockwise P 0r ilevel angle α i, P 0r iand the vertical angle β between surface level iand P 0r ilength S i; Described total powerstation is set to a P 0, described prism is set to a R i, B 1p 0for the line of described direction point and described total powerstation, P 0r ifor the line of described total powerstation and described prism; And,
Computing unit, for according to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point.
Further, described computing unit specifically comprises:
Planimetric coordinates computation subunit, for according to described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, adopt planimetric coordinates computing formula, calculate the planimetric coordinates (X obtaining described tested point i, Y i); Wherein, described planimetric coordinates computing formula is as follows:
X i=X P+S i×cosβ i×cos(A P-Bi);
Y i=Y P+S i×cosβ i×sin(A P-Bi);
sgn ( Y B - Y P ) = { 1 , Y B - Y P > 0 0 , Y B - Y P = 0 - 1 , Y B - Y P < 0 ; And,
Elevation coordinate computation subunit, for the height Z according to described Fixed Initial Point p, described length S i, described vertical angle β i, described total powerstation antenna height h pwith described prism antenna height j i, adopt high computational formula, calculate the elevation coordinate Z obtaining described tested point i; Wherein, described high computational formula is as follows:
Z i=Z P+S i×sinβ i+H P-j i
Three-dimensional coordinate obtains subelement, for obtaining the three-dimensional coordinate (X of described tested point i, Y i, Z i).
Further, described total powerstation 1 also comprises communication shutoff module;
Described communication turns off module and is used for sending communication shutoff instruction to described prism, disconnects the communication linkage with described prism.
See Fig. 5, it is the structural representation of another embodiment of the measuring system of atural object landform provided by the invention.
The measuring system of the atural object landform that the embodiment of the present invention provides comprises the total powerstation P being set up in Fixed Initial Point 0, be set up in the first prism R of the first tested point 1, be set up in the second prism R of the second tested point 2with the i-th prism R being set up in the i-th tested point i.Total powerstation P 0successively with the first prism R 1, the second prism R 2with the i-th prism R iset up communication linkage, receive the terrestrial object information of each tested point, and by being set up in the prism B of orientation point 1measure the terrain information of each tested point successively, thus realize the Quick Acquisition to the atural object landform of tested point.
The measuring system of the atural object landform that the embodiment of the present invention provides, the communication connection of total powerstation and prism can be set up, make prism that the atural object landform relevant information of tested point is directly sent to total powerstation, realize quick, the precise acquisition of total powerstation to tested point place atural object landform, the fields such as locus is determined, construction work, municipal public use, communication navigation, mapping, public safety, mobile location-based service, water conservancy, agriculture and forestry can be widely used in; The image of the tested point that the title of tested point, terrain object attribute coding and prism collect by prism and periphery thereof directly sends to total powerstation, is conducive to user when the atural object terrain rendering topomap measured by utilizing as auxiliary reference.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims (10)

1. a measuring method for atural object landform, is characterized in that, comprising:
Total powerstation receives the communication request of prism, sets up communication linkage with described prism; Described total powerstation is erected at known Fixed Initial Point place, position, and described prism holder is located at tested point place; Described Fixed Initial Point and described tested point keep intervisibility;
Described total powerstation receives the prism antenna height of described prism transmission and the terrestrial object information of described tested point;
Described total powerstation, according to described prism antenna height, is measured and calculates the three-dimensional coordinate of described tested point;
Described total powerstation is preserved and is exported terrestrial object information and the three-dimensional coordinate of described tested point.
2. the measuring method of atural object landform as claimed in claim 1, it is characterized in that, described total powerstation is according to described prism antenna height, and the three-dimensional coordinate of tested point described in survey calculation, specifically comprises:
Obtain the direction point B preset 1planimetric coordinates (X b, Y b); Described direction point B 1intervisibility is kept with described Fixed Initial Point;
Measure B 1p 0rotate clockwise P 0r ilevel angle α i, P 0r iand the vertical angle β between surface level iand P 0r ilength S i; Described total powerstation is set to a P 0, described prism is set to a R i, B 1p 0for the line of described direction point and described total powerstation, P 0r ifor the line of described total powerstation and described prism;
According to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point.
3. the measuring method of atural object landform as claimed in claim 2, is characterized in that, described according to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point, specifically comprise:
According to described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, adopt planimetric coordinates computing formula, calculate the planimetric coordinates (X obtaining described tested point i, Y i); Wherein, described planimetric coordinates computing formula is as follows:
X i=X P+S i×cosβ i×cos(A P-Bi);
Y i=Y P+S i×cosβ i×sin(A P-Bi);
sgn ( Y B - Y P ) = { 1 , Y B - Y P > 0 0 , Y B - Y P = 0 - 1 , Y B - Y P < 0 ;
According to the height Z of described Fixed Initial Point p, described length S i, described vertical angle β i, described total powerstation antenna height h pwith described prism antenna height j i, adopt high computational formula, calculate the elevation coordinate Z obtaining described tested point i; Wherein, described high computational formula is as follows:
Z i=Z P+S i×sinβ i+H P-j i
Obtain the three-dimensional coordinate (X of described tested point i, Y i, Z i).
4. the measuring method of atural object landform as claimed in claim 1, is characterized in that, preserves and after the terrestrial object information exporting described tested point and three-dimensional coordinate, also comprise at described total powerstation:
Described total powerstation sends communication to described prism and turns off instruction, disconnects the communication linkage with described prism.
5. the measuring method of the atural object landform as described in any one of Claims 1-4, is characterized in that, the terrestrial object information of described tested point comprises the image of described tested point that the title of described tested point, terrain object attribute coding and described prism collect and periphery thereof.
6. a measuring system for atural object landform, is characterized in that, comprises total powerstation and prism; Described total powerstation is erected at known Fixed Initial Point place, position, and described prism holder is located at tested point place; Described Fixed Initial Point and described tested point keep intervisibility;
Described total powerstation comprises:
Communication request receiver module, for receiving the communication request of described prism, sets up communication linkage with described prism;
Information receiving module, for receiving the prism antenna height and the terrestrial object information of described tested point that described prism sends;
Measurement of coordinates module, for according to described prism antenna height, measures and calculates the three-dimensional coordinate of described tested point; And,
Message output module, for preserving and exporting terrestrial object information and the three-dimensional coordinate of described tested point.
7. the measuring system of atural object landform as claimed in claim 6, it is characterized in that, described measurement of coordinates module specifically comprises:
Direction point acquiring unit, for obtaining default direction point B 1planimetric coordinates (X b, Y b); Described direction point B 1intervisibility is kept with described Fixed Initial Point;
Measuring unit, for measuring B 1p 0rotate clockwise P 0r ilevel angle α i, P 0r iand the vertical angle β between surface level iand P 0r ilength S i; Described total powerstation is set to a P 0, described prism is set to a R i, B 1p 0for the line of described direction point and described total powerstation, P 0r ifor the line of described total powerstation and described prism; And,
Computing unit, for according to described prism antenna height, described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, calculate the three-dimensional coordinate of described tested point.
8. the measuring system of atural object landform as claimed in claim 7, it is characterized in that, described computing unit specifically comprises:
Planimetric coordinates computation subunit, for according to described direction point B 1planimetric coordinates (X b, Y b), described level angle α i, described vertical angle β iwith described length S i, adopt planimetric coordinates computing formula, calculate the planimetric coordinates (X obtaining described tested point i, Y i); Wherein, described planimetric coordinates computing formula is as follows:
X i=X P+S i×cosβ i×cos(A P-Bi);
Y i=Y P+S i×cosβ i×sin(A P-Bi);
sgn ( Y B - Y P ) = { 1 , Y B - Y P > 0 0 , Y B - Y P = 0 - 1 , Y B - Y P < 0 ; And,
Elevation coordinate computation subunit, for the height Z according to described Fixed Initial Point p, described length S i, described vertical angle β i, described total powerstation antenna height h pwith described prism antenna height j i, adopt high computational formula, calculate the elevation coordinate Z obtaining described tested point i; Wherein, described high computational formula is as follows:
Z i=Z P+S i×sinβ i+H P-j i
Three-dimensional coordinate obtains subelement, for obtaining the three-dimensional coordinate (X of described tested point i, Y i, Z i).
9. the measuring system of atural object landform as claimed in claim 6, is characterized in that, described total powerstation also comprises communication and turns off module;
Described communication turns off module and is used for sending communication shutoff instruction to described prism, disconnects the communication linkage with described prism.
10. the measuring system of the atural object landform as described in any one of claim 6 to 9, is characterized in that, the terrestrial object information of described tested point comprises the image of described tested point that the title of described tested point, terrain object attribute coding and described prism collect and periphery thereof.
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