CN102509509A

CN102509509A - Underground pipeline positioning method based on CORS (continuous operational reference system)

Info

Publication number: CN102509509A
Application number: CN201110302833XA
Authority: CN
Inventors: 孙作勇; 张培宏; 张继忠; 雷国锋
Original assignee: Sian Coal and Aeronautics Information Industry Co Ltd
Current assignee: Sian Coal and Aeronautics Information Industry Co Ltd
Priority date: 2011-10-09
Filing date: 2011-10-09
Publication date: 2012-06-20
Anticipated expiration: 2031-10-09
Also published as: CN102509509B

Abstract

The invention discloses an underground pipeline positioning method based on a CORS (continuous operational reference system). The method comprises the following steps of: I, establishing a CORS; II, collecting paper drawings: collecting the pipeline as-built drawings of all underground pipelines paved in an area to be positioned and the topographical map around each underground pipeline respectively; III, making an electronic map, wherein the making process comprises the steps of paper map electronization treatment, drawing scanning and pretreatment, raster image transfer, raster image orientation, image sector conversion, pipeline attribution information marking, edge matching treatment, projection conversion, data check, conversion into an embedded electronic map and the like; IV, transferring and visually displaying the electronic map; V, superposing the coordinate data of the electronic map; and VI, positioning the underground pipelines. The method disclosed by the invention is easy and convenient to use and operate, has a good using effect and high practical value, and can really realize accurate positioning of the underground pipelines and effectively solve the problems of inconvenience in positioning operation, relatively bad positioning effect and the like of the existing underground pipeline positioning method.

Description

Underground utilities localization method based on the CORS system

Technical field

The invention belongs to the electronic geographic-information processing technology field, especially relate to a kind of underground utilities localization method based on the CORS system.

Background technology

Along with the progress at full speed and the application popularization of GPS technology, its effect in urban survey is more and more important.Current; (the continuous operation satnav service colligate system (Continuous Operational Reference System is abbreviated as CORS) of (Real-time kinematic) technology foundation has become one of GPS Urban application and development focus to utilize many base station networks RTK.The CORS system is that high and new technologies such as satellite positioning tech, computer networking technology, digital communication technology are multi-faceted, the product of degree of depth crystallization.The CORS system is made up of base station net, data processing centre (DPC), data transmission system, location navigation data broadcasting system and five parts of user's application system; Link into an integrated entity through data transmission system in the heart in each base station and the monitoring analysis, form dedicated network.Wherein, the base station net is made up of equally distributed base station in the certain limit, and it is responsible for gathering the gps satellite observation data and is delivered to data processing centre (DPC), and system health property Monitoring Service is provided simultaneously.Data processing centre (DPC) is the control center of CORS system, is used to receive each base station data line data of going forward side by side and handles, and forms many base stations difference consumer positioning data, forms the data file of certain format, is distributed to the user.Data processing centre (DPC) is the core cell of CORS system, also is the key point that the high precision real-time dynamic positioning is achieved.The real-time monitored data that data processing centre (DPC) continuously gathered according to each base station in 24 hours are carried out whole modeling and are resolved in the zone; Automatically generate one corresponding to flowing the virtual reference station (comprising base station coordinate and GPS observed reading information) of website position and broadcast net through existing data communication network and wireless data; Need the user of measurement and navigation code phase/carrier phase difference update information to be provided to all kinds of, so that real-time resolving goes out the accurate position of rover station with international form.Data transmission system is the data transmission system between each base station and the data processing centre (DPC); During practical application; Each base station data transfers to monitoring analysis center (being data processing centre (DPC)) through the optical fiber special line, and this data transmission system comprises data transmission hardware device and software control module.The data broadcasting system is broadcast the location navigation data through forms such as mobile network, UHF radio station, Internet to the user.User's application system comprise user profile receiving system, network-type RTK positioning system, afterwards with fast precise positioning system and self-aid navigation system and monitoring location system etc.Different according to the precision of using, user's service subsystem can be divided into millimeter level custom system, centimetre-sized custom system, decimeter grade custom system, meter level custom system etc.; And different according to user's application, can be divided into mapping and engineering user (centimetre, decimeter grade), automobile navigation and consumer positioning (meter level), several types of high precision user's (processing afterwards), meteorological users etc.

The CORS system has thoroughly changed traditional RTK and has measured operating type, and its main advantage is embodied in: 1) improved initialization time, enlarged the scope of effective work; 2) adopt continuous base station, the user can observe at any time, and is easy to use, improved work efficiency; 3) have perfect data monitoring system, can eliminate systematic error effectively and jump, strengthen the reliability of difference operation with week; 4) user need not set up reference station, really realizes the unit operation, has reduced expense; 5) use fixing reliable data chainning communication modes, reduced noise; 6) remote I NTERNET is provided service, has realized sharing of data; 7) enlarged the range of application of GPS, more helped the precise navigation of vehicle, aircraft and boats and ships in dynamic field; 8) for building digitalized city new opportunity is provided.

Existing nowadays along with rapid economy development, demands for energy is increasing, and it is also more and more to be used for the laying of the underground utilities that the energy carries.Be accompanied by the continuous increase of underground utilities, to the searching of underground utilities and the location work difficulty further that also becomes.At present, pipeline digs disconnected incident and often takes place, and it is not only endangering the people's personal safety, has also caused enormous economic loss to country simultaneously, thereby how location, quickness and high efficiency ground underground utilities become current pressing for.

The method of existing location underground pipeline mainly contains following two kinds: one is based on the localization method of papery as-constructed drawing: this method is the conventional method of often using; Particularly: the as-constructed drawing of the hand-held papery of technician and according to map that marks on the drawing and annotation, and seek pipeline through identification mark property atural object; The advantage of this method is directly perceived, also is convenient to the handing-over of data; Two are based on the localization method of pipeline detection instrument: the positioning principle of this method be through transmitter to the underground pipeline electromagnetic signals, reflection wave is received device accept after, trend, the buried depth that can judge pipeline according to the numeral that shows or picture signal; For nonmetal pipeline, generally be employed in the method that the pipeline place buries metal spike line underground, utilize the metallic conduit detection instrument to survey nonmetal pipeline; The advantage of this method is to use operation fairly simple, is convenient to maintenance department and uses.

Nowadays at present; The method of above-mentioned two kinds of location pipelines is used all relatively extensively in pipeline management unit; But find that in actual use the two all exists obvious defects; Wherein the localization method based on the papery as-constructed drawing exists as-constructed drawing to be difficult for preserving, piping drawing is difficult for renewal, topomap can not upgrade, is difficult for consulting, can not shares and rely on on-the-spot object of reference location, especially just loses the defectives such as using value that pipeline is searched at the scene in the municipal administration large-scaled construction period; And having following defective based on the localization method of pipeline detection instrument: pipeline detection instrument electromagnetic wave signal is subject to disturb, can't accurately survey nonmetal pipeline; Though can install metal spike line (being tinsel) additional surveys nonmetal pipeline; But tinsel frangible in the construction; Be prone to produce in corrosion breakpoint and the construction and can't handle the interface problem of two wires well, thereby often be difficult to reach the purpose of hunting in the future.

Summary of the invention

Technical matters to be solved by this invention is to above-mentioned deficiency of the prior art; A kind of underground utilities localization method based on the CORS system is provided; The accurate location that its use is easy and simple to handle, result of use good, practical value is high and can really realize underground utilities can effectively solve problems such as the positioning action that has the method for positioning underground pipeline existence now is inconvenient, locating effect is relatively poor.

For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of underground utilities localization method based on the CORS system is characterized in that this method may further comprise the steps:

Step 1, CORS system building: one or more GPS fixed reference station are laid in the area to be targeted of carrying out the underground utilities location at need, and said GPS fixed reference station is the motionless GPS receiving system of stationkeeping; Carry out two-way communication through data transmission system between said GPS fixed reference station and the data service center; And carry out two-way communication through location navigation data broadcasting system between data service center and the portable data processing terminal handed by pipeline location staff, the quantity of said portable data processing terminal is one or more and it comprises data processor and the parameter input unit and the display unit that join with said data processor respectively; Said GPS fixed reference station, data service center, said data transmission system, said location navigation data broadcasting system and said portable data processing terminal are formed the complete CORS system of a cover;

Step 2, paper drawing are collected: the pipeline as-constructed drawing of all underground utilities of laying in the area to be targeted and all side topomap of all sides of each underground utilities are collected said pipeline as-constructed drawing and all side topomap are paper drawing and the quantity of the two is one or more respectively; Collection work just obtains many pending paper drawings after accomplishing;

In the paper drawing collection process, also need artificially synchronously the geographical position coordinates data of all underground utilities of laying in the area to be targeted to be collected in the step 2;

Step 3, electronic cartography, its manufacturing process may further comprise the steps:

301, the paper map electronization is handled: many collected in the step 2 pending paper drawings are carried out electronization respectively handle, and many electronic maps of corresponding acquisition; And the electronic processing method of many pending paper drawings is all identical, and for arbitrary pending paper drawing, its electronic processing procedure is following:

3011, drawing scanning: adopt scanning device to treat the processing paper drawing and scan, and generate pending grating image;

3012, grating image transmits: the pending grating image described in the step 3012 is sent to data processing equipment;

3013, grating image is directed: adopt said data processing equipment and according to the orientation method of conventional grating image, said pending grating image is carried out geographical space registration and correction;

3014, grating image vector conversion: said data processing equipment calls the image vector modular converter; And grating image vector conversion method according to routine; Said pending grating image after geographical space registration and correction is carried out the vector conversion, and acquisition and the pending corresponding digital vector image of paper drawing;

3015, pipeline attribute information mark: said data processing equipment calls labeling module; And geographical position coordinates data according to all underground utilities of laying in the area to be targeted of collecting in the step 2; Pipeline attribute information to each underground utilities in the said data vector image marks, and obtains the electronic map complete; Said pipeline attribute information comprises the geographical position coordinates data of pipeline title and pipeline, and the pipeline title of each underground utilities and the geographical position coordinates data of pipeline are carried out related through associative cell;

302, edge fit is handled: said data processing equipment calls the edge fit processing module, and according to the edge fit disposal route of conventional electrical map, several electronic maps that obtain in the step 301 is carried out edge fit handle, and obtain the complete electronic chart of area to be targeted;

Step 4, electronic chart transmit and directly perceived the demonstration: with the complete electronic chart of area to be targeted described in the step 302; Through data link transmit and stores synchronized to the data processor of said portable data processing terminal in, and the display unit through said portable data processing terminal intuitively shows the complete electronic chart of area to be targeted;

Step 5, the stack of electronic chart coordinate data: said portable data processing terminal is through said location navigation data broadcasting system; The spatial data of the position, area to be targeted that data service centre is sent receives, and in spatial data stores synchronized to the said data processor with received position, area to be targeted; Said data processor calls the volume coordinate laminating module, and the spatial data of position, area to be targeted is superimposed on the complete electronic chart of said area to be targeted;

Simultaneously, said portable data processing terminal gets access to the spatial data of pipeline location staff's current location synchronously through carrying out two-way communication with data service center;

Step 6, underground utilities location: need the pipeline title or the geographical position coordinates data of inquiry underground utilities, said data processor to call pipeline target navigation module and in the complete electronic chart of area to be targeted, find out through the parameter input unit input of said portable data processing terminal and need the inquiry underground utilities according to the geographical position coordinates data of need inquiry underground utilities; Afterwards, pipeline location staff compares analysis through the geographical position coordinates data to need inquiry underground utilities with the spatial data of current location, draws the distance between the orientation that needs to inquire about underground utilities and itself and the current location.

Above-mentioned underground utilities localization method based on the CORS system is characterized in that: the set inside of data processor described in the step 1 has pipeline target navigation module, map view to browse module, pipeline acceptance survey module, pipeline information inquiry module and vertical and horizontal section analysis module;

Wherein, said pipeline target navigation module is used for the geographical position coordinates data according to need inquiry underground utilities, in the complete electronic chart of area to be targeted, need inquiry underground utilities is searched, and needing to realize the real-time navigation function of inquiry underground utilities;

Said map view is browsed module, is used for the input instruction according to said parameter input unit, on said display unit, the complete electronic chart of area to be targeted is carried out a plurality of angles and browses;

Said pipeline acceptance survey module; Be used for behind arbitrary underground utilities generation rebuilding construction; Geographical position coordinates data to transforming the back underground utilities are gathered in real time, and generate new pipeline geographical position coordinates data and carry out stores synchronized according to real-time image data;

Said pipeline information inquiry module; Needing to be used for the pipeline title of inquiry underground utilities according to said parameter input unit input; Transfer out synchronously the pipeline attribute information that needs the inquiry underground utilities and intuitively show, and the pipeline attribute information that falls to take out is made amendment and amended pipeline attribute information is carried out stores synchronized according to the modification information command of said parameter input unit input through said display unit;

Said vertical and horizontal section analysis module is used for when the practice of construction excavation underground pipeline, being used for importing according to said parameter input unit the pipeline title of current institute excavation underground pipeline, and the current underground utilities that excavate are carried out vertical section and crossed section analysis.

Above-mentioned underground utilities localization method based on the CORS system is characterized in that: the location navigation data broadcasting system of unifying of the data transmission system described in the step 1 is the GPRS wireless communication system;

Data processor described in the step 6 calls pipeline target navigation module and in the complete electronic chart of area to be targeted, finds out when needing the inquiry underground utilities; Said data processor calls pipeline target navigation module and in the complete electronic chart of area to be targeted, the need inquiry underground utilities that find is marked, and through said display unit need inquiry underground utilities is shown synchronously; And said data processor pipeline location staff's in the complete electronic chart of area to be targeted current location marks, and through said display unit current location is shown synchronously.

Above-mentioned underground utilities localization method based on the CORS system; It is characterized in that: after edge fit was finished dealing with in the step 302, said data processing equipment also need adopt eSuperMap Embedded GIS development system to convert the complete electronic chart of said area to be targeted into the embedded electronic map; The software function module of said pipeline target navigation module on eSuperMap Embedded GIS development system, being developed.

Above-mentioned underground utilities localization method based on the CORS system is characterized in that: the quantity of the fixed reference station of GPS described in the step 1 is one, and said CORS system is a single base station CORS system.

Above-mentioned underground utilities localization method based on the CORS system is characterized in that: the scanning device described in the step 3011 is that chromoscan equipment and said pending grating image are tiff format; Carry out in the step 3013 before the conversion of grating image vector, also need adopt said data processing equipment to go dirty point, smooth treatment, broken line repairing to handle and micronization processes successively pending grating image.

Above-mentioned underground utilities localization method based on the CORS system; It is characterized in that: adopt said data processing equipment that said pending grating image is carried out geographical space registration and timing in the step 3013, said data processing equipment calls the MicroStation software function module and carries out geographical space registration and correction; And actual geographical space registration and the timing of carrying out; Through a plurality of reference mark that are evenly distributed and can after scanning, generate accurately definite geographic coordinate data in the pending grating image of on pending paper drawing described in the step 3011, choosing, said pending grating image is carried out geographical space registration and correction; The quantity at said reference mark is no less than 4.

Above-mentioned underground utilities localization method based on the CORS system; It is characterized in that: after edge fit is finished dealing with in the step 302; Said data processing equipment also need call the projection modular converter and according to the numerical map projection conversion method of routine; Complete electronic chart to the area to be targeted carries out the projection conversion process, makes that the coordinate system of complete electronic chart of area to be targeted is unified.

Above-mentioned underground utilities localization method based on the CORS system is characterized in that: during the distributing GPS fixed reference station, also need set up horizontal control network and vertical control network in the area to be targeted in the step 1; When setting up horizontal control network and vertical control network; Adopt conventional with the translocation of IGS tracking station and utilize precise ephemeris the geographical position coordinates of foundation GPS fixed reference station to be carried out translocation as the method for starting at data, so that the GPS fixed reference station is unified in the WGS84 coordinate frame; Simultaneously; Adopt conventional and the translocation of IGS tracking station and utilize precise ephemeris the local reference mark and the local leveling point in GPS fixed reference station zone of living in to be carried out translocation respectively, all be transformed into local coordinate system with elevation system that the plane coordinate system of set up horizontal control network and vertical control network is unified as the method for starting at data; The geographical position coordinates of the GPS fixed reference station of setting up with and after the local reference mark in zone of living in and local leveling point translocation finish, then accomplish IGS translocation process;

When the area to be targeted is the district of survey among a small circle below 50 square kilometres; After accomplishing IGS translocation process; According to " GPS standard " respective level GPS net requirement to the GPS fixed reference station; And utilize the HDS2003 the poster processing soft to carry out baseline and handle and two-dimensional adjustment, and adopt four conventional parameters to add plane conversion parameter and the height fitting parameter of the corresponding WGS84 of the solving coordinate of elevation approximating method, then accomplish the process of setting up of horizontal control network and vertical control network to local coordinate;

When the area to be targeted is the district of survey on a large scale more than 50 square kilometres; After accomplishing IGS translocation process; According to " GPS standard " respective level GPS net requirement to the GPS fixed reference station; And utilize the HDS2003 the poster processing soft to carry out baseline and handle and two-dimensional adjustment, and adopt corresponding seven conversion parameters that solve the WGS84 coordinate to local coordinate of seven conventional parameter coordinate transformation methods, then accomplish the process of setting up of horizontal control network and vertical control network.

Above-mentioned underground utilities localization method based on the CORS system; It is characterized in that: in the step 1 in the distributing GPS fixed reference station process of area to be targeted; When the pier position of GPS fixed reference station is selected; Selected pier position is to be easy to settle height around GPS receiving system and the visual field more than 10 degree, the do not have position of broad view of barrier and the object, high-power wireless electricity emissive source and the remote high voltage transmission line that do not have large-area waters, strong jammer satellite signal to receive near the selected pier position; The observation pier of said GPS fixed reference station is the reinforced concrete knoll that is built on the load-bearing pillar;

When building said observation pier, on said load-bearing pillar, bore four borings that are square arrangement earlier, the degree of depth of said boring is that 10cm～30cm, diameter are that spacing between Φ 4cm ± 1cm and adjacent two borings is 20cm ± 2cm; Afterwards; In four said borings, implant a diameter respectively and be Φ 2cm ± 0.5cm and be vertically to the deformed bar of laying; It is consistent with the height of said observation pier that four deformed bars being implanted in four said boring are formed the height of main muscle and said deformed bar of said observation pier, adopts the multiple tracks transverse steel of laying that four deformed bar colligations are fixed as one again from top to bottom; Then; The wooden frame that makes in advance and be used to build the said observation pier of moulding is sleeved on the said main muscle outside; And with the vertical square center that is installed on four boring compositions of the fixed pedestal of design and installation in advance on said observation pier, and keep antenna to force the centering sign vertically in the installation process with metal tube; At last, after said observation pier carried out concrete pouring construction and treat institute's casting concrete final set, remove said wooden frame, just accomplish the construction work progress of said observation pier;

Build in the said observation pier process, before fixed pedestal and metal tube are installed, also need pvc pipe, and in said metal tube and said pvc pipe, adorn a drag wire at the pre-buried diameter of phi 5cm ± 1cm in the bottom of fixed pedestal and metal tube.

The present invention compared with prior art has the following advantages:

1, uses easy and simple to handle and be easy to and grasp, can accurately realize the functions such as navigation, location, information inquiry, pipeline acceptance survey, vertical section and transversal section analysis-by-synthesis of underground utilities through hand-held lead navigating instrument.

2, reasonable in design and be easy to promote the use of; Only need to convert to vector embedded electronic map such as pipeline as-constructed drawing sweep vector format conversion and input to hand-held lead navigating instrument; Utilize the CORS system that sets up in advance afterwards, just can indicate current location simultaneously to the distance and the direction that need the inquiry pipeline through hand-held lead navigating instrument.

3, pipeline navigation efficient is high, utilizes the embedded development language to realize the embedded excavation management system of handheld device, and the hand-held lead navigating instrument of staff can be quickly navigate to target pipeline.

4, the underground utilities positioning result is accurate, and the present invention receives the Continuous Operating GPS Reference data through hand-held terminal device and utilizes the real time differential algorithm of CORS system, has improved the GPS bearing accuracy greatly, has guaranteed that bearing accuracy is at decimeter grade.

5, through the GPRS communication module, realized the information transmission between handheld terminal and the data service center, and realized the real-time update of spatial data and pipeline attribute data.

6, practical value is high; The present invention becomes the embedded electronic map intuitively to be illustrated on the hand-held data terminal pipeline data creating; Utilize the CORS system to obtain accurate geographic coordinate simultaneously; And the accurate coordinates stacked data that is obtained is added on the embedded electronic map, and, current position coordinates and target pipeline position coordinates need the distance and bearing of inquiry pipeline apart from current location through being compared just can orient.The hand-held data terminal can realize fast query and editting function and the function of the construction and excavation pipeline being carried out vertical section and crossed section analysis of real-time update function, the pipeline attribute information of the various functions of browse of embedded electronic map, the rapid navigation function that need search pipeline, pipeline acceptance survey data; Perfect in shape and function and realization are convenient; Can realize omnidirectional high-accuracy, scientific excavation, effectively having avoided blindly, excavation causes the destruction to underground utilities.

In sum; The accurate location that the present invention uses is easy and simple to handle, result of use good, practical value is high and can really realize underground utilities, problem such as can solve effectively that the drawing that existing method for positioning underground pipeline exists is difficult for preserving, is difficult for consulting, detection instrument is subject to disturb, positioning action inconvenience, locating effect are relatively poor.

Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.

Description of drawings

Method flow block diagram when Fig. 1 carries out the underground utilities location for the present invention.

Fig. 2 by the present invention carry out underground utilities when location the schematic block circuit diagram of employing hardware system.

Method flow block diagram when Fig. 3 makes electronic chart for the present invention.

Description of reference numerals:

The 1-GPS fixed reference station; The 2-data service center; 3-hand-held pipeline navigating instrument.

Embodiment

Like Fig. 1, Fig. 2 and shown in Figure 3, the underground utilities localization method based on the CORS system of the present invention may further comprise the steps:

Step 1, CORS system building: one or more GPS fixed reference station 1 are laid in the area to be targeted of carrying out the underground utilities location at need, and said GPS fixed reference station 1 is the motionless GPS receiving system of stationkeeping.Carry out two-way communication through data transmission system between said GPS fixed reference station 1 and the data service center 2; And carry out two-way communication through location navigation data broadcasting system between data service center 2 and the portable data processing terminal handed by pipeline location staff, the quantity of said portable data processing terminal is one or more and it comprises data processor and the parameter input unit and the display unit that join with said data processor respectively; Said GPS fixed reference station 1, data service center 2, said data transmission system, said location navigation data broadcasting system and said portable data processing terminal are formed the complete CORS system of a cover.

In the present embodiment, for said portable data processing terminal, said data processor set inside has pipeline target navigation module, map view to browse module, pipeline acceptance survey module, pipeline information inquiry module and vertical and horizontal section analysis module.

In the actual use, said data processing pipeline is browsed module, pipeline acceptance survey module, pipeline information inquiry module and 5 functional modules of vertical and horizontal section analysis module according to the automatic invocation target navigation module of steering order, map view.

In the present embodiment, said portable data processing terminal is a hand-held pipeline navigating instrument 3, and actual use operation is very easy, and easy to carry.

In the present embodiment, the quantity of said GPS fixed reference station 1 is one, and said CORS system is single base station CORS system, and the said data transmission system location navigation data broadcasting system of unifying is the GPRS wireless communication system.In the actual use, according to the concrete needs of reality, said CORS system also can adopt many base stations CORS system, and the quantity of set GPS fixed reference station 1 is a plurality of in many base stations CORS system.Simultaneously, the said data transmission system location navigation data broadcasting system of unifying also can adopt the wireless communication system of other type.

In the present embodiment; In distributing GPS fixed reference station 1 process of area to be targeted; When the pier position of GPS fixed reference station 1 is selected; Selected pier position is to be easy to settle height around GPS receiving system and the visual field more than 10 degree, the do not have position of broad view of barrier and the object, high-power wireless electricity emissive source and the remote high voltage transmission line that do not have large-area waters, strong jammer satellite signal to receive near the selected pier position; The observation pier of said GPS fixed reference station 1 is the reinforced concrete knoll that is built on the load-bearing pillar.

Thereby; Actual selection is continuously during the position, pier position (being website) of the GPS fixed reference station 1 of operation; Should be noted that following item: website should select the position that is easy to settle GPS receiving equipment and broad view; The height barrier that more than 10 degree, do not have around the visual field is in order to avoid gps signal is absorbed or blocks; Near the object that water field of big area or strong jammer satellite signal receive that do not have the website is to weaken the influence of multipath effect; Website should be away from high-power wireless electricity emissive source (like TV station, microwave station etc.), and its distance preferably is not less than 200m; Website is away from high voltage transmission line, and its distance must not be less than 50m, to avoid the interference of electromagnetic field to gps signal.Simultaneously, the stationary installation stablizing and be used for fixing receiving antenna also need be provided, and also reliable electric power system and wireless telecommunication system need be provided on the website, make things convenient for the access of civil power and the Internet, settle and protection GPS reference station equipment.When unmanned guard, can guarantee device security, prevented that the people from deliberately destroying.In addition, website should be selected the flourishing place of traffic, and convenient arrival carried out examination and maintenance.

When reality is built GPS fixed reference station 1 pier mark; GPS fixed reference station 1 is placed in the buildings top to be gone up so that insert power supply and netting twine; Simultaneously also more comparatively safe; And the height of buildings also helps transmitting RTK and DGPS data to RTK and GIS rover station, and the construction geodetic network.Generally, adopt the suitable mode that installs and fixes that gps antenna is fixed and want on the roof, and the communication apparatus of GPS receiver and power supply (comprising PC) is placed in the room under the roof, convenient like this power supply and the netting twine of connecting.Usually; Settle gps antenna high more favourable more, but neither all be fit to set up GPS fixed reference station 1 by all types of buildingss, be not suitable for settling gps antenna like the buildings of steeple shape, skyscraper formula; Because under the bigger situation of wind-force, occur rocking through regular meeting.And medium altitude (ten floors below), flat-top top that ground is firm are comparatively suitable.Attention: in the place of sweltering heat, small inclination and distortion can appear because of sunshine in very high pier mark or buildings.Simultaneously, the observation pier is built on the load-bearing pillar, and chiseling a thermofin at place, position or the area of cement layer during construction is 40cm * 40cm, dark 5cm～10cm.

Actual when building said observation pier, on said load-bearing pillar, bore four borings that are square arrangement earlier, the degree of depth of said boring is that 10cm～30cm, diameter are that spacing between Φ 4cm ± 1cm and adjacent two borings is 20cm ± 2cm; Afterwards; In four said borings, implant a diameter respectively and be Φ 2cm ± 0.5cm and be vertically to the deformed bar of laying; It is consistent with the height of said observation pier that four deformed bars being implanted in four said boring are formed the height of main muscle and said deformed bar of said observation pier, adopts the multiple tracks transverse steel of laying that four deformed bar colligations are fixed as one again from top to bottom; Then; The wooden frame that makes in advance and be used to build the said observation pier of moulding is sleeved on the said main muscle outside; And with the vertical square center that is installed on four boring compositions of the fixed pedestal of design and installation in advance on said observation pier, and keep antenna to force the centering sign vertically in the installation process with metal tube; At last, after said observation pier carried out concrete pouring construction and treat institute's casting concrete final set, remove said wooden frame, just accomplish the construction work progress of said observation pier.

Simultaneously, build in the said observation pier process, before fixed pedestal and metal tube are installed, also need pvc pipe, and in said metal tube and said pvc pipe, adorn a drag wire at the pre-buried diameter of phi 5cm ± 1cm in the bottom of fixed pedestal and metal tube.

In the present embodiment; The diameter of said boring is that the spacing between Φ 4cm and adjacent two borings is 20cm; The diameter of deformed bar is that Φ 2cm and its length are 1.5m～2m; Said transverse steel around said main muscle outer felt around and colligation fix and it is the reinforcing bar of diameter of phi 8mm, the spacing between the adjacent twice transverse steel is 20cm.Actual when fixed pedestal and metal tube are installed, keep vertically for making fixed pedestal and metal tube, can use three waddys at interval 120 degree directions support as interim, and instrument such as usage level chi keeps antenna to force the centering sign vertically.Institute's casting concrete final set and remove said wooden frame after, stick emmarble clump appearance.Simultaneously, tiltedly bury the pvc pipe of a diameter 5cm in advance in the bottom of fixed pedestal and metal tube, and in metal tube and pvc pipe, install a drag wire in advance and be convenient to connect up from now on.

Said data service center 2 is a brand computer that server software ZNCaster and router are housed.

The actual network that carries out generally uses optical fiber or ADSL online when connecting.Optical fiber is generally fixedly IP, and ADSL is dynamic IP mostly.Network insertion can directly insert by special line, also can hint obliquely at outer net IP through LAN and insert.

During distributing GPS fixed reference station 1, also need set up horizontal control network and vertical control network in the area to be targeted in the step 1.When setting up horizontal control network and vertical control network; Adopt conventional with the translocation of IGS tracking station and utilize precise ephemeris the geographical position coordinates of foundation GPS fixed reference station 1 to be carried out translocation as the method for starting at data, so that GPS fixed reference station 1 is unified in the WGS84 coordinate frame.Simultaneously; Adopt conventional and the translocation of IGS tracking station and utilize precise ephemeris the local reference mark and the local leveling point in GPS fixed reference station 1 zone of living in to be carried out translocation respectively, all be transformed into local coordinate system with elevation system that the plane coordinate system of set up horizontal control network and vertical control network is unified as the method for starting at data.The geographical position coordinates of the GPS fixed reference station 1 of setting up with and after the local reference mark in zone of living in and local leveling point translocation finish, then accomplish IGS translocation process.

When the area to be targeted is the district of survey among a small circle below 50 square kilometres; After accomplishing IGS translocation process; According to " GPS standard " respective level GPS net requirement to GPS fixed reference station 1; And utilizing the static the poster processing soft of HDS2003 to carry out baseline handles and two-dimensional adjustment; And adopt four conventional parameters to add plane conversion parameter and the height fitting parameter of the corresponding WGS84 of the solving coordinate of elevation approximating method to local coordinate, then accomplish the process of setting up of horizontal control network and vertical control network.

When the area to be targeted is the district of survey on a large scale more than 50 square kilometres; After accomplishing IGS translocation process; According to " GPS standard " respective level GPS net requirement to GPS fixed reference station 1; And utilize the HDS2003 the poster processing soft to carry out baseline and handle and two-dimensional adjustment, and adopt corresponding seven conversion parameters that solve the WGS84 coordinate to local coordinate of seven conventional parameter coordinate transformation methods, then accomplish the process of setting up of horizontal control network and vertical control network.

When reality is built the CORS system; The unify unification of elevation system is very important to plane coordinate system; Especially when a plurality of GPS fixed reference station 1, all GPS fixed reference station 1 are unified under the same set of coordinate system parameter, and must use bench level during the elevation translocation.

In the present embodiment, for GPS fixed reference station 1, the geographical position coordinates of GPS fixed reference station 1 (specifically being geocentric coordinate) need be carried out the translocation of IGS tracking station.The purpose of IGS tracking station translocation is that newly-established GPS fixed reference station 1 (being the base station of CORS system) is fixed in the WGS84 coordinate frame in the whole world; Base station is done 24 hours continuous static observation; Introduce WUHN; The observation data same period at station, the whole world such as KUNM, SHAO, LHAS, POL2, GUAM adopts precise ephemeris afterwards afterwards, under the ITRF2000 framework, carries out baseline with GAMIT software to resolve; In the net adjustment, strong constraint is carried out as known point in station, the whole world.Through the translocation of IGS tracking station, can establish the accurate geocentric coordinate of base station.Simultaneously; Owing to will the plane coordinate system elevation system of unifying be transformed into local coordinate system; Thereby need carry out the IGS tracking station translocation of local reference mark and leveling point, after translocation is accomplished, according to the respective level GPS net requirement of " GPS standard "; Utilize the HDS2003 the poster processing soft to carry out baseline and handle and two-dimensional adjustment, and find the solution plane conversion parameter and height fitting parameter or seven parameters of WGS84 to local coordinate.

Specifically; When the area to be targeted is the district of survey among a small circle below 20～50 square kilometres; Gather two or more local coordinate points and add the elevation approximating method and carry out the RTK measurement, can among a small circle, make the planimetric coordinates of measurement point and the precision of elevation reach the requirement of control net with four parameters.Known point both can only provide the plane or only provide level high point, also can the plane, three-dimensional point that elevation is all known, but the known point of finding the solution four parameters preferably includes in the coverage of survey area and requires and is evenly distributed.The leveling point that carries out the translocation of IGS tracking station also must be evenly distributed and more than three at least, and three or three above leveling points can carry out the plane fitting of elevation, and six or six above leveling points can carry out the surface fitting of elevation.Elevation (H)-height anomaly data (N) of high (the h)=WGS84 of level.

When the area to be targeted is the district of survey on a large scale of (especially more than 100 square kilometres) more than 50 square kilometres; Four parameters add the requirement that the elevation approximating method often can not reach control net precision; Will use seven parameter coordinate transformation methods to carry out seven parametric solutions this moment; Concrete operation method is following: at first need do control survey and measurement of the level; In surveying the district, do static control on the reference mark of known coordinate, before the net adjustment, a selected reference mark is as the WGS84 known coordinate of static network adjustment in surveying the district; Afterwards; Use a static instrument to fix and carry out 24 single-point location surveys more than as a child (if coverage of survey area is less relatively at this reference mark; Can use under the low relatively situation of accuracy requirement observation time in the static network the single-point mean value of long point as the WGS84 constraint coordinate of static network adjustment); Again this single-point elements of a fix mean value is noted the WGS84 known coordinate as this point afterwards; Then the control net is carried out the three-dimensional constraining adjustment of a known point, calculate the three-dimensional coordinate of other some position, select and be evenly distributed on coverage of survey area at least three group coordinates and carry out seven parametric solutions; At last, be input in the handbook RTK software and get final product finding the solution seven parameters that obtain.

Step 2, paper drawing are collected: the pipeline as-constructed drawing of all underground utilities of laying in the area to be targeted and all side topomap of all sides of each underground utilities are collected said pipeline as-constructed drawing and all side topomap are paper drawing and the quantity of the two is one or more respectively; Collection work just obtains many pending paper drawings after accomplishing.

In the present embodiment, when collecting paper drawing, mainly be that the relevant drawing (like the as-constructed drawing of pipeline and the topomap of pipeline periphery etc.) to all underground utilities of laying in the area to be targeted is collected.

Wherein, the as-constructed drawing of pipeline generally is kept at pipeline management and pipeline construction unit, the accurate coordinate data when having write down pipeline construction in the as-constructed drawing of pipeline, thereby it is the basic data of pipeline location.All side topomap of pipeline periphery can be from the planimetric map in the as-constructed drawing, also can be the national standard topomap of buying to Mapping departments (like 1: 10000 topomap), and all side topomap have reflected the basic topography and geomorphology of pipeline periphery.

In the paper drawing collection process, also needing artificially synchronously the geographical position coordinates data of all underground utilities of laying in the area to be targeted to be collected in the step 2, specifically is the geographical position coordinates data of in the as-constructed drawing of pipeline, putting out each underground utilities in order.Wherein, the geographical position coordinates data of underground utilities comprise the geographical position coordinates data of this underground utilities position along the line of being write down in the as-constructed drawing of pipeline.

3011, drawing scanning: adopt scanning device to treat the processing paper drawing and scan, and generate pending grating image.

In the present embodiment, said scanning device is that chromoscan equipment and said pending grating image are tiff format.Thereby during actual scanning, each pending paper drawing is carried out chromoscan respectively, and data scanning resolution is 300dpi, scanning is that unit and document format data are TIFF by former map sheet.In the present embodiment, carry out before the conversion of grating image vector, also need adopt said data processing equipment to go dirty point, smooth treatment, broken line repairing to handle and micronization processes successively pending grating image.Carry out in the drawing scanning process in the step 3011; Because all factors in the former plot quality of paper map, content, engineer's scale and the scanning process; Thereby when scanning still can have various noises and unwanted some other information according to the graphical element of paper drawing with the slice map that color property extracts, in order to obtain correctly and clean data, before digitizing; Need go pre-treatment step such as dirty, smooth, broken line repairing, micronization processes, to guarantee the quality of raster data.

3012, grating image transmits: the pending grating image described in the step 3012 is sent to data processing equipment.

The actual grating image that carries out can adopt conventional data transfer equipment to transmit when transmitting.

3013, grating image is directed: adopt said data processing equipment and according to the orientation method of conventional grating image, said pending grating image is carried out geographical space registration and correction.

In the present embodiment, adopt said data processing equipment that said pending grating image is carried out geographical space registration and timing, said data processing equipment calls the MicroStation software function module and carries out geographical space registration and correction; And actual geographical space registration and the timing of carrying out; Through a plurality of reference mark that are evenly distributed and can after scanning, generate accurately definite geographic coordinate data in the pending grating image of on pending paper drawing described in the step 3011, choosing, said pending grating image is carried out geographical space registration and correction; The quantity at said reference mark is no less than 4.

The process that said pending grating image is carried out geographical space registration and correction; Exactly raster data is carried out correction procedure; In fact be exactly the drawing orientation; Under MicroStation and I/RASB software, carry out during correction, and according to the mapborder coordinate figure of theory, adopt four point control point (also claiming orientation point) more than corresponding correct algorithm correct.Orientation point answers branch evenly, rationally and should select for use mapborder point or point of square control network as orientation point.The relatively poor relevant regulations that is not more than of raster data and gross data is checked undesirable person, must correct processing again; If when still failing to satisfy precision, check former papery drawing, too big like the paper drawing distortion, can suitably relax precision.

3014, grating image vector conversion: said data processing equipment calls the image vector modular converter; And grating image vector conversion method according to routine; Said pending grating image after geographical space registration and correction is carried out the vector conversion, and acquisition and the pending corresponding digital vector image of paper drawing.

The conversion of grating image vector is the map digitizing process, and digitizing is carried out under the 2-D data form, adopts unified key element layered sheet, line style storehouse and symbolic library.In the digitized process, rule is faithful to base map, and annotation presses atural object not break off.

During each key element digitizing, following requirement is arranged on the map:

Key element on the topomap can be divided into a key element, line feature, face key element and annotation, when digitizing, should strictly carry out the data hierarchy scheme, according to correct method each key element is gathered respectively;

During the digitizing of some key element, all directions are fixed or direction-free point symbol is only gathered its anchor point;

When gathering the wire key element, should guarantee that lines are smooth, constantly adjust the collection point spacing according to the curvature of wire key element, the density of putting on the wire key element is undistorted with geometric configuration to be principle, and the density of point should increase with the increase of curvature; The continuity that will keep the wire key element during digitizing;

Area pattern should constitute closed polygonal, suspension must not occur.Common edge with multiple attribute, digitizing is once only;

Simultaneously, each key element must not self intersection and repetition digitizing on the topomap.

3015, pipeline attribute information mark: said data processing equipment calls labeling module; And geographical position coordinates data according to all underground utilities of laying in the area to be targeted of collecting in the step 2; Pipeline attribute information to each underground utilities in the said data vector image marks, and obtains the electronic map complete; Said pipeline attribute information comprises the geographical position coordinates data of pipeline title and pipeline, and the pipeline title of each underground utilities and the geographical position coordinates data of pipeline are carried out related through associative cell.

Actual carrying out pipeline attribute information when mark; Said pipeline attribute information can also comprise that pipeline lays time, the concrete purposes of pipeline at first, whether carried out that the back is transformed and information such as position and transformation time are transformed in corresponding transformation number of times and each time, and the while can also comprise that some other need write down and the important information relevant with pipeline.In the actual mechanical process, carry out in the pipeline attribute information mark process, the topological relation of also corresponding completion electronic chart is set up process.

In the present embodiment; After the conversion of grating image vector is accomplished with pipeline attribute information mark; Need the electronic map that completes is carried out quality check and drawing ornamenting; Be meant that specifically each key element collection is carried out preliminary quality check after accomplishing on the map, mainly check, guarantee not have bigger mistake from data precision, data hierarchy aspect; Afterwards, carry out the ornamenting of drawing, form initial achievements.

In the present embodiment, after in the step 3015 the pipeline attribute information of each underground utilities in the said data vector image being marked, said data processing equipment also need call the SDB map that the supmap software function module converts said electronic map into the SDB form.That is to say, need the data-switching of said electronic map is the SDB form under the supmap software, when Data Format Transform, need carry out the audit-in-depth of data.

302, edge fit is handled: said data processing equipment calls the edge fit processing module, and according to the edge fit disposal route of conventional electrical map, several electronic maps that obtain in the step 301 is carried out edge fit handle, and obtain the complete electronic chart of area to be targeted.

Edge fit is handled and is promptly carried out sheet join, and the purpose of sheet join is to keep the drawing data continuity.Because the area to be targeted is made up of several electronic maps; There is more serious not edge fit phenomenon in the electronic map datum of directly making; Analyzing and processing for ease of other subsystem; Carry out geometry edge fit and attribute edge fit to each adjoining sheet layering, the edge fit precision of map sheet will satisfy the national accuracy requirement of corresponding proportion chi.

After edge fit is finished dealing with in the step 302; Said data processing equipment also need call the projection modular converter and according to the numerical map projection conversion method of routine; Complete electronic chart to the area to be targeted carries out the projection conversion process, makes that the coordinate system of complete electronic chart of area to be targeted is unified.

Owing to after data-switching and edge fit are handled, formed vector data file,, specifically be to be the WGS84 coordinate system with coordinate system is unified for guaranteeing that All Files all under unified coordinate system, need carry out the projection conversion.

In the present embodiment, after projection converts, also need carry out data check, data check can be divided into following two types:

The first kind, sequencing inspection: but the data service routine is carried out the inspection of layer, look, can find out those and the key element that layer, color table can not mate automatically, the operating personnel corrects.Correct the back rerun procedure successively, the look inspection, the final elimination " string layer ", " colour contamination " phenomenon; Second type, specific aim inspection: mainly be the place that inspection easy error and program can't be checked through, this is the necessary complement to program checkout, mainly comprises graphical quality inspection, attribute and topological relation inspection, directionality problem inspection, area pattern inspection etc.

Simultaneously, after edge fit was finished dealing with in the step 302, said data processing equipment also need adopt eSuperMap Embedded GIS development system to convert the complete electronic chart of said area to be targeted into the embedded electronic map.To sum up, the embedded electronic map that finally completes is by the electronic chart of paper drawing through processing, and this embedded electronic map can intuitively show the position of each underground utilities and the atural object situation around the pipeline.

In the present embodiment, specifically be data check accomplish and confirm errorless after, errorless and converted the SDB map of SDB form into on inspection, the translation function that carries through Beijing hypergraph software converts .pmr file and .pmw file under the esupermap software into.

Step 4, electronic chart transmit and directly perceived the demonstration: with the complete electronic chart of area to be targeted described in the step 302; Through data link transmit and stores synchronized to the data processor of said portable data processing terminal in, and the display unit through said portable data processing terminal intuitively shows the complete electronic chart of area to be targeted.

Step 5, the stack of electronic chart coordinate data: said portable data processing terminal is through said location navigation data broadcasting system; The spatial data of the position, area to be targeted that data service centre 2 is sent receives, and in spatial data stores synchronized to the said data processor with received position, area to be targeted; Said data processor calls the volume coordinate laminating module, and the spatial data of position, area to be targeted is superimposed on the complete electronic chart of said area to be targeted;

Simultaneously, said portable data processing terminal gets access to the spatial data of pipeline location staff's current location synchronously through carrying out two-way communication with data service center 2.Owing to built the CORS system among the present invention, thereby the spatial data precision of the pipeline that is obtained location staff's current location is very high.

In the present embodiment; Pipeline target navigation module, the map view of data processor browsed module, pipeline acceptance survey module, pipeline information inquiry module and vertical and horizontal section analysis module and is the software function module of on eSuperMap Embedded GIS development system, being developed in the said portable data processing terminal, to satisfy the processing demands to the embedded electronic map.

In the present embodiment; It is developing instrument that said pipeline target navigation module, map view are browsed module, pipeline acceptance survey module, pipeline information inquiry module and vertical and horizontal section analysis module employing VS2005; Use C# to be development language, the Embedded GIS development platform is the Esupmap 6.0 of Supermap company.

In the actual use; When need are browsed the complete electronic chart of area to be targeted; Instruct through parameter input unit (specifically being writing pencil) input operation; Said data processor invocation map views browsing module, and browse module through map view and can be conveniently go up the various functions of browse that realize electronic chart at hand-held pipeline navigating instrument 3 (specifically being) at display unit, comprise electronic chart draw that frame amplifies, dwindles, translation, full figure, amount calculate functions such as distance, amount calculation area.

When need carry out the underground utilities navigation; Need earlier pipeline data (specifically being the geographical position coordinates data of each underground utilities) the hand-held pipeline navigating instrument 3 of packing in advance; Pipeline during data from pipeline construction the completion data or look for the high precision pipe network coordinate of the pipe network mapping company mapping of specialty, specifically be the pipeline attribute information that is labeled on the electronic chart; Later stage excavates when safeguarding underground utilities, only needs to import the pipeline title or the geographical position coordinates data of the target underground utilities that will search, and hand-held pipeline navigating instrument 3 can carry out the pipeline navigation in real time.

Because the hardware system that the present invention adopted has the high-precision location function; Can gather the geographical position coordinates data of underground utilities in real time; And respective synchronization is kept in local the point diagram layer and face figure layer; Thereby after the geographical position coordinates data acquisition completion, said data processor can directly generate new pipeline data with the geographical position coordinates data of newly gathering through calling pipeline acceptance survey module.

When need are inquired about the pipeline attribute information of a certain underground utilities; Need only to need the underground utilities title of inquiry through the parameter input unit input; Said data processor just can call pipeline information inquiry module, checks the pipeline attribute information of these underground utilities rapidly, and can edit easily and safeguard the pipeline attribute information of these underground utilities; Practice thrift the archives material of pipeline greatly, and reduced the maintenance cost of underground utilities.

Simultaneously; When the construction and excavation pipeline; Utilize hand-held pipeline navigating instrument 3 (specifically being to call the vertical and horizontal section analysis module) that the target excavation underground pipeline is carried out vertical section and crossed section analysis through data processor; Realize omnidirectional high-accuracy, scientific excavation, effectively having avoided blindly, excavation causes the destruction to underground utilities.

The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit changes any simple modification, change and the equivalent structure that above embodiment did according to the present invention, all still belongs in the protection domain of technical scheme of the present invention.

Claims

1. underground utilities localization method based on the CORS system is characterized in that this method may further comprise the steps:

Step 1, CORS system building: one or more GPS fixed reference station (1) are laid in the area to be targeted of carrying out the underground utilities location at need, and said GPS fixed reference station (1) is the motionless GPS receiving system of stationkeeping; Carry out two-way communication through data transmission system between said GPS fixed reference station (1) and the data service center (2); And carry out two-way communication through location navigation data broadcasting system between data service center (2) and the portable data processing terminal handed by pipeline location staff, the quantity of said portable data processing terminal is one or more and it comprises data processor and the parameter input unit and the display unit that join with said data processor respectively; Said GPS fixed reference station (1), data service center (2), said data transmission system, said location navigation data broadcasting system and said portable data processing terminal are formed the complete CORS system of a cover;

Step 5, the stack of electronic chart coordinate data: said portable data processing terminal is through said location navigation data broadcasting system; The spatial data of the position, area to be targeted that data service centre (2) is sent receives, and in spatial data stores synchronized to the said data processor with received position, area to be targeted; Said data processor calls the volume coordinate laminating module, and the spatial data of position, area to be targeted is superimposed on the complete electronic chart of said area to be targeted;

Simultaneously, said portable data processing terminal gets access to the spatial data of pipeline location staff's current location synchronously through carrying out two-way communication with data service center (2);

2. according to the described underground utilities localization method based on the CORS system of claim 1, it is characterized in that: the set inside of data processor described in the step 1 has pipeline target navigation module, map view to browse module, pipeline acceptance survey module, pipeline information inquiry module and vertical and horizontal section analysis module;

3. according to claim 1 or 2 described underground utilities localization methods based on the CORS system, it is characterized in that: the location navigation data broadcasting system of unifying of the data transmission system described in the step 1 is the GPRS wireless communication system;

4. according to claim 1 or 2 described underground utilities localization methods based on the CORS system; It is characterized in that: after edge fit was finished dealing with in the step 302, said data processing equipment also need adopt eSuperMap Embedded GIS development system to convert the complete electronic chart of said area to be targeted into the embedded electronic map; The software function module of said pipeline target navigation module on eSuperMap Embedded GIS development system, being developed.

5. according to claim 1 or 2 described underground utilities localization methods based on the CORS system, it is characterized in that: the quantity of the fixed reference station of GPS described in the step 1 (1) is one, and said CORS system is a single base station CORS system.

6. according to claim 1 or 2 described underground utilities localization methods based on the CORS system, it is characterized in that: the scanning device described in the step 3011 is that chromoscan equipment and said pending grating image are tiff format; Carry out in the step 3013 before the conversion of grating image vector, also need adopt said data processing equipment to go dirty point, smooth treatment, broken line repairing to handle and micronization processes successively pending grating image.

7. according to claim 1 or 2 described underground utilities localization methods based on the CORS system; It is characterized in that: adopt said data processing equipment that said pending grating image is carried out geographical space registration and timing in the step 3013, said data processing equipment calls the MicroStation software function module and carries out geographical space registration and correction; And actual geographical space registration and the timing of carrying out; Through a plurality of reference mark that are evenly distributed and can after scanning, generate accurately definite geographic coordinate data in the pending grating image of on pending paper drawing described in the step 3011, choosing, said pending grating image is carried out geographical space registration and correction; The quantity at said reference mark is no less than 4.

8. according to claim 1 or 2 described underground utilities localization methods based on the CORS system; It is characterized in that: after edge fit is finished dealing with in the step 302; Said data processing equipment also need call the projection modular converter and according to the numerical map projection conversion method of routine; Complete electronic chart to the area to be targeted carries out the projection conversion process, makes that the coordinate system of complete electronic chart of area to be targeted is unified.

9. according to claim 1 or 2 described underground utilities localization methods, it is characterized in that: during distributing GPS fixed reference station (1), also need set up horizontal control network and vertical control network in the area to be targeted in the step 1 based on the CORS system; When setting up horizontal control network and vertical control network; Adopt conventional with the translocation of IGS tracking station and utilize precise ephemeris the geographical position coordinates of foundation GPS fixed reference station (1) to be carried out translocation as the method for starting at data, so that GPS fixed reference station (1) is unified in the WGS84 coordinate frame; Simultaneously; Adopt conventional and the translocation of IGS tracking station and utilize precise ephemeris the local reference mark and the local leveling point in GPS fixed reference station (1) zone of living in to be carried out translocation respectively, all be transformed into local coordinate system with elevation system that the plane coordinate system of set up horizontal control network and vertical control network is unified as the method for starting at data; The geographical position coordinates of the GPS fixed reference station of setting up (1) with and after the local reference mark in zone of living in and local leveling point translocation finish, then accomplish IGS translocation process;

When the area to be targeted is the district of survey among a small circle below 50 square kilometres; After accomplishing IGS translocation process; According to " GPS standard " respective level GPS net requirement to GPS fixed reference station (1); And utilize the HDS2003 the poster processing soft to carry out baseline and handle and two-dimensional adjustment, and adopt four conventional parameters to add plane conversion parameter and the height fitting parameter of the corresponding WGS84 of the solving coordinate of elevation approximating method, then accomplish the process of setting up of horizontal control network and vertical control network to local coordinate;

When the area to be targeted is the district of survey on a large scale more than 50 square kilometres; After accomplishing IGS translocation process; According to " GPS standard " respective level GPS net requirement to GPS fixed reference station (1); And utilize the HDS2003 the poster processing soft to carry out baseline and handle and two-dimensional adjustment, and adopt corresponding seven conversion parameters that solve the WGS84 coordinate to local coordinate of seven conventional parameter coordinate transformation methods, then accomplish the process of setting up of horizontal control network and vertical control network.

10. according to claim 1 or 2 described underground utilities localization methods based on the CORS system; It is characterized in that: in the step 1 in area to be targeted distributing GPS fixed reference station (1) process; When the pier position of GPS fixed reference station (1) is selected; Selected pier position is to be easy to settle height around GPS receiving system and the visual field more than 10 degree, the do not have position of broad view of barrier and the object, high-power wireless electricity emissive source and the remote high voltage transmission line that do not have large-area waters, strong jammer satellite signal to receive near the selected pier position; The observation pier of said GPS fixed reference station (1) is the reinforced concrete knoll that is built on the load-bearing pillar;