Background technology:
Remote sensing technology is a kind of earth observation technology that grows up the sixties in last century, receives the electromagnetic wave of ground return and the record that inverting obtains surface state with sensor.Along with development of aviation and aerospace technology, before and after 2000, it is ripe that remote sensing technology is tending towards, and the satellite data of polytype different resolution can be provided, and obtains many achievements in fields such as resource exploration, disaster alarm, environmental monitorings.In the engineering field, remote sensing has some application for solving some problem as a kind of complementary means in the part engineering.
Engineering is the project of building in specific ground scope, and ground and underground condition have restrictive function to engineering, and the purpose of survey and design work is exactly to select suitable ground scope, evades the unfavorable factor of natural conditions, selects rational technical scheme.The common engineering survey and design is divided into feasibility study stage, concept phase, construction documents design phase, utilizes existing topomap, carries out the selection in circuit or factory site, determines design proposal.But mostly the middle small-scale topographical map that uses is what produced the seventies in last century at present, has than big-difference with reality.The image that remote sensing technology obtains is the real conditions on recent ground, an area, can replace old line to draw topomap, as the basic data of engineering design, for specialties such as the required measurement of engineering design, geology, hydrometeorology, environmental protection water guarantor provide technical information.
The utility model content:
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of remote sensing system that is used for engineering survey is provided:
Comprise remote sensing in early stage module 1, remote sensing in mid-term module 2, later stage remote sensing module 3 and information extraction modules 4;
Described remote sensing in early stage module 1, remote sensing in mid-term module 2 and later stage remote sensing module 3 are connected with information extraction modules 4 respectively;
Early stage, remote sensing module 1 was made up of middle class resolution ratio satellite, the engineering district was made 1: 200000-1: 50000 satellite image map in early stage, and satellite image map input information extraction module 4 in earlier stage;
Remote sensing in mid-term module 2 is made up of middle-and-high-ranking resolution satellite, the engineering district is made 1: 25000-1: 10000 satellite image map in mid-term, and with satellite image map input information extraction module 4 in mid-term;
Later stage remote sensing module 3 is made up of high class resolution ratio satellite, the engineering district is made 1: 2000-1: 10000 later stage satellite image map, and with later stage satellite image map input information extraction module 4;
Satellite image map and later stage satellite image map were analyzed, were compared and judge the satellite image map in early stage that information extraction modules 4 will receive, mid-term, extract the technical information of specialties such as geology, hydrometeorology, measurement, environmental protection water guarantor respectively, thereby finish the remote sensing engineering survey of engineering district topographic(al) data.
The class resolution ratio satellite is Landsat LANDSAT or mini-bus landsat CERBS in described, middle class resolution ratio satellite image ground resolution 10-30m.
Described middle-and-high-ranking resolution satellite is French SPOT satellite or India P6 satellite, satellite image ground resolution 2.5-10m.
Described high class resolution ratio satellite is that fast bird QuickBird or Ikonos or Orbview commercial satellite receive, or aeroplane photography obtains image ground resolution 0.3-2.4m.
Described information extraction modules 4 is handled automatically by computing machine and the artificial visual decipher constitutes, and purpose is to extract the professional technique information that comprises in the different stage image, satisfies the needs of engineering different phase design.
The utility model is introduced remote sensing technology in the engineering survey project, in the different phase of design effort, select different remote sensing work means according to the requirement of different specialties, extracts the technical information that needs, and is the engineering design work service.The present invention has improved the technology content of engineering survey, has strengthened information-based application level, has important economic value and social effect.
Embodiment:
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
In the stages such as the feasibility study of engineering survey, primary design, working drawing designs, along with the raising of working stage, the action of requirement is more and more, and precision is more and more higher.Propose to adopt intermediate resolution satellite data, middle high-resolution satellite data, high-resolution satellite data or aviation image image base map in view of the above as work, extract the technical information of geology, measurement specialty, hydrometeorology specialty, environmental protection water guarantor specialty etc. respectively, in the engineering survey design effort, realize multistage, many means, multi-specialized comprehensive remote sensing investigation method, for accelerating the progress of engineering survey work, the technical merit that improves exploration work lays the foundation.
According to the technical scheme that the present invention proposes, reached from coarse to fine, deeply be familiar with gradually engineering project.Be familiar with in early stage and adopt the low data source of precision in few, summary information is provided; Data obtaining to adopt when technical scheme is selected in engineering reply back degree of precision provide basic data; In job design, adopt the high accuracy data source, the particulars on providing a little as required.This process can effectively be evaded unfavorable factor according to the order of human knowledge's things, reduces the modification repeatedly of design effort, saves time, and reduces labour intensity.
Referring to Fig. 1, a kind of remote sensing system that is used for engineering survey:
Comprise remote sensing in early stage module 1, remote sensing in mid-term module 2, later stage remote sensing module 3 and information extraction modules 4;
Described remote sensing in early stage module 1, remote sensing in mid-term module 2 and later stage remote sensing module 3 are connected with information extraction modules 4 respectively;
Early stage, remote sensing module 1 was made up of middle class resolution ratio satellite, the engineering district was made 1: 200000-1: 50000 satellite image map in early stage, and satellite image map input information extraction module 4 in earlier stage;
In the engineering feasibility study stage in early stage, main task determines tentatively whether this engineering is feasible in this area, need be in screening in a big way.Adopt intermediate resolution satellite data such as Landsat LANDSAT, mini-bus landsat CERBS this moment, makes 1: 200000-1: 50000 satellite image maps represent the overall picture in engineering district.Satellite ground resolution 10-30m, main topography and geomorphology classification of extracting the regional extent macroscopic view, tectonic structure complexity, traffic and economic profile, affiliated hydrology basin, climate type, ecologic environment overviews etc. need corresponding proportion chi topomap and subregion data in the work, operating accuracy requires lower, in conjunction with professional requirement, preferred path or addressing scheme, the working time needs 20-30 days usually.
Remote sensing in mid-term module 2 is made up of middle-and-high-ranking resolution satellite, the engineering district is made 1: 25000-1: 10000 satellite image map in mid-term, and with satellite image map input information extraction module 4 in mid-term;
In the concept phase in mid-term, path or site are determined, need find out the engineering specifications of determining that the area is concrete.Can adopt middle high-resolution satellite image such as SPOT image this moment, the P-6 image of India etc., and data ground resolution 2.5-10m makes 1: 25000~1: 10000 satellite map.According to the result of works scope and last level remote sensing work, the coverage of selected data should be slightly larger than path or site scope, but will comprise that possible ratio selects scheme.The technical information of paying close attention to is the present status of land utilization of formation lithology, unfavorable geology phenomenon, atural object detailed distribution, the detailed features to the influential lake of arriving, river of engineering, path or site scope etc., the data and the topomap of corresponding proportion chi in early stage that the decipher need of work is more detailed, the working time generally needs about 1 month.
Later stage remote sensing module 3 is made up of high class resolution ratio satellite, the engineering district is made 1: 2000-1: 10000 later stage satellite image map, and with later stage satellite image map input information extraction module 4;
In the construction documents design phase in later stage, utilize aerial survey orthophotoquad or High Resolution Satellite Images such as QuickBird, Ikonos etc., data space resolution 0.3-2.4m makes 1: 2000~1: 10000 high definition image map.In route selection, to avoid the location of geologic condition, hydrometeorological condition difference, select beneficial zone to arrange the tower position.In the engineering of site, instruct the layout of other investigation and prospecting, be aided with necessary field checking work.Each buildings or controlled some position certain limit are done detailed specialized information extraction, can set up and just penetrate model, the field measurement topographic(al) data, the working time can be adjusted as required.
The satellite image map in early stage that information extraction modules 4 will receive, mid-term, satellite image map and later stage satellite image map were handled automatically by computing machine and the professional technique information that comprises in the different stage image is extracted in the artificial visual decipher, as the basic data of engineering different phase design, thereby finish the remote sensing engineering survey of engineering district topographic(al) data.
By above elaboration, the remote sensing technology overall application in the engineering survey process, for each specialty of engineering survey provides unified technology platform, exploration work means and achievement content have been enriched.
Above content is to further describing that the utility model is done in conjunction with concrete preferred implementation; can not assert that embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by claims of being submitted to.