CN113420982A - Aerospace remote sensing mapping fusion application method and system - Google Patents
Aerospace remote sensing mapping fusion application method and system Download PDFInfo
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Abstract
The invention relates to a method and a system for fusion application of space remote sensing mapping, wherein the method comprises the following steps: a. collecting user requirements and uniformly arranging satellite observation tasks; b. uniformly processing the original data to produce standard products; c. and producing professional products according to the user requirements, and constructing a remote sensing target situation. The fusion application mode has the characteristics of strong universality of a technical system and high operation integration degree, is particularly suitable for comprehensive application of the remote sensing satellite with the stereo imaging capability, and is also suitable for comprehensive construction and combined application of two ground systems such as a surveying and mapping satellite, the remote sensing satellite and the like.
Description
Technical Field
The invention relates to an application method and system for aerospace remote sensing mapping fusion.
Background
In the prior art, a satellite ground system is a special system, and a remote sensing satellite ground system and a surveying and mapping satellite ground system have differences in requirements description elements, basic data product definition, data correction processing and data association relation for satellite observation tasks, and have difficulty in product fusion application due to the fact that remote sensing products and surveying and mapping products are inconsistent in scale and precision. When the remote sensing data product application needs to support the mapping product, the remote sensing satellite ground system submits the mapping product requirement to the mapping satellite ground system, and the mapping satellite ground system sends the existing mapping product in the system to the remote sensing satellite ground system.
Disclosure of Invention
The invention aims to provide a method and a system for fusion application of space remote sensing mapping.
In order to achieve the purpose, the invention provides a method and a system for fusion application of space remote sensing mapping, wherein the method comprises the following steps:
a. collecting user requirements and uniformly arranging satellite observation tasks;
b. uniformly processing the original data to produce standard products;
c. and producing professional products according to the task type, and constructing a remote sensing target situation.
According to one aspect of the invention, in step (a), the observation task requirements are divided into remote sensing requirements and surveying and mapping requirements according to user requirements;
and carrying out format standardization processing on the remote sensing requirement and the surveying and mapping requirement, determining a requirement planning criterion, and uniformly arranging satellite observation tasks according to the requirement planning criterion.
According to one aspect of the invention, the remote sensing requirements include target information, target location, imaging mode, imaging time, data type;
the mapping requirements include imaging region, stereo imaging mode, imaging time, data type.
According to one aspect of the invention, quantification, time sequence analysis and conflict resolution are performed on each demand based on satellite platform load constraint, mapping base height ratio constraint and ground station transit time.
According to one aspect of the invention, the demand planning criterion comprises task priority, timeliness priority and comprehensive benefit priority, and the satellite observation demand is generated based on the demand planning criterion and used as the input of satellite mission planning.
According to one aspect of the invention, in step (b), satellite raw data is received, and decryption, decompression and formatting are performed on the raw data;
based on the formatted data, carrying out data preprocessing, image radiation correction, geometric correction and other processing to complete the production of 0-2 level common basic products;
respectively carrying out remote sensing professional processing and surveying and mapping professional processing according to different task types;
when the production and surveying and mapping professional treatment of 0-2 level common basic products are carried out, satellite attitude and orbit data are combined;
and producing 0-2 level common basic products by adopting a uniform data product information format and standard specifications.
According to one aspect of the invention, in the step (c), the basic elevation information provided by the DEM product produced by mapping professional processing is used for producing a standard product of satellite images in the same area;
the method comprises the steps of producing remote sensing professional products and surveying and mapping professional products according to product types, wherein the surveying and mapping professional products provide basic base maps with uniform spatial reference, uniform scale and precision characteristics for remote sensing application, and on the basis, the remote sensing professional products are utilized to construct a remote sensing target situation map.
According to one aspect of the invention, the base map comprises an orthophoto map, a digital elevation model, a digital line drawing, and a digital grid model.
Space remote sensing survey and drawing fuses application system includes:
the basic service layer comprises a set of data, software and specifications for supporting remote sensing service and surveying and mapping service operation;
the common service layer comprises a common processing function set oriented to remote sensing application, mapping application and fusion application thereof;
and the business processing layer is used for realizing fusion of business processing flows, scheduling each functional module of the common service layer, and completing overall planning of remote sensing surveying and mapping requirements, observation task planning and basic data unified production.
According to one aspect of the invention, the basic service layer comprises software interfaces and tools such as basic data products, professional application product resource catalogs, secondary development of professional application processing plug-ins, data products, a general basic service calling interface, user permission verification, process modeling and driving and the like;
the common service layer functions comprise remote sensing mapping requirement normalization processing, original data processing, attitude and orbit data processing, system-level geometric correction and radiation correction and basic data organization and management.
According to one scheme of the invention, the integrated acceptance and planning analysis of the remote sensing and surveying and mapping application requirements is realized, the requirement integration and conflict resolution are carried out from the requirement level, the requirement contradiction can be effectively reduced, and the utilization efficiency of satellite resources is improved.
According to one scheme of the invention, the unification of basic product specifications is realized, the integrated high-efficiency processing of remote sensing and surveying and mapping common basic products is realized based on a common infrastructure environment, and a foundation is provided for the fusion application of two types of products.
According to one scheme of the invention, a basic geographic framework with unified spatial reference, scale and precision is provided, and a basic condition is provided for application of remote sensing one graph. The image positioning precision can be further improved, and the remote sensing application precision based on the prior knowledge base can also be further improved.
Drawings
FIG. 1 is a block diagram schematically illustrating an application system for mapping and fusion of space remote sensing according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a flow chart of demand orchestration planning processing in a method for applying fusion of space remote sensing mapping according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a unified production flow chart of common basic products in the method for applying the fusion of space remote sensing mapping according to an embodiment of the present invention;
fig. 4 schematically shows a fusion application flowchart under a unified space reference framework in the aerospace remote sensing mapping fusion application method according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
Referring to fig. 1, the aerospace (satellite) remote sensing mapping fusion application method provided by the invention comprises the steps of performing integrated demand planning according to the demands of users, performing professional processing according to original data, uniformly processing the original data, producing standard products, and finally constructing a remote sensing target situation based on a uniform space reference framework. As shown in fig. 1, to implement the method of the present invention, three technical frameworks facing the fusion application need to be established, including a basic service layer, a common service layer, and a business processing layer, so as to implement self-observation task orchestration (shaking sensing drawing demand orchestration planning), raw data processing, basic data unified management, common data unified production, and data product fusion application. Certainly, the system also comprises a cloud basic supporting environment, wherein the cloud basic supporting environment is a computing, storage and network resource pool which can be distributed, dynamically expanded and elastically stretched according to needs and is constructed on the basis of physical computing, storage, network equipment, an operating system, a database and other general software and hardware equipment through a virtualization technology of a cloud platform, and a basic supporting environment is provided for upper-layer business application.
The basic service layer comprises a set of data, software and specifications for supporting remote sensing service and surveying and mapping service operation. Therefore, the basic service layer mainly provides basic support such as data, software, specifications and the like for the remote sensing surveying and mapping service, and has small relevance with specific processing service. The basic service layer specifically comprises basic software, interfaces, data and tools such as basic data products and professional application product resource catalog management, secondary development of professional application processing plug-ins, data product specification, universal basic service calling interfaces, user right verification, process modeling and driving (process support).
The common service layer is a set of common processing functions oriented to remote sensing application, mapping application and fusion application thereof, and the specific functions comprise remote sensing mapping requirement normalization processing (unified establishment of remote sensing and mapping observation task requirements), original data processing, attitude and orbit data processing, system-level geometric correction and radiation correction and basic data organization management.
The business processing layer is used for realizing fusion business processing according to a definable business processing flow, scheduling each functional module of the common service layer, and completing remote sensing mapping demand planning, observation task planning and basic data unified production. Therefore, the business processing layer can realize business functions and processes such as data product demand planning, satellite observation task planning, standard image production, data product fusion application and the like. The surveying and mapping product is obtained based on the production of a standard image product, after the production of a Digital Elevation Model (DEM) in the product is finished, the product is stored in a basic database of the system, elevation information is automatically provided for the next production of the standard image product in the same area, the influence of the elevation on the image positioning precision can be greatly reduced, and the method has a better effect particularly on the satellite large-side-swing imaging or mountainous area imaging conditions. The business process of integrating the surveying and mapping product into the standard product production realizes the forward feedback of the remote sensing surveying and mapping product integration application, can further improve the image positioning precision, and can further improve the target detection precision based on the prior knowledge base.
Referring to fig. 2, when the satellite observation requirements (product requirements) are planned uniformly, the system uniformly remote sensing, mapping and measuring the requirement submitting inlet, and the requirement standardization and formatting processing are realized. The requirements are quantized, refined and integrated, mutual time sequence and relevance of the requirements are analyzed and determined, and different task planning criteria such as timeliness priority, task priority and comprehensive benefit priority are established. Specifically, user requirements are collected and divided into remote sensing requirements and mapping requirements according to task types. And then, uniformly arranging satellite observation tasks according to the remote sensing requirements and mapping requirements reported by the users and collected by the system. And carrying out format standardization processing on the remote sensing requirements and the surveying and mapping requirements, determining a requirement planning criterion, and uniformly arranging satellite observation tasks according to the requirement planning criterion. The remote sensing demand report comprises target information, a target position, an imaging mode, imaging time, a data type and the like; the survey requirement report comprises an imaging area, a stereo imaging mode, imaging time, data types and the like. The method is characterized in that different types of requirements are normalized, arranged and unified in format, and quantification, time sequence analysis and conflict resolution are carried out on the requirements based on constraint conditions such as satellite platform load constraint, mapping base height ratio constraint and ground station transit time. In the invention, the requirement planning criteria comprise task priority, aging priority, comprehensive benefit priority and the like, and the satellite observation requirements can be generated based on the different requirement planning criteria so as to be used as the input of satellite task planning.
Referring to fig. 3, when the general production of the generic basic product is performed, the data storage, the preprocessing, the image radiation correction, the geometric correction and the like are uniformly completed (based on the formatted data) on the basis of the uniform information format and the data product specification, so that the integrated rapid production and the real-time push of the satellite 0-2 level basic data product are realized. Namely, firstly, standard products are produced according to original data, and remote sensing professional processing and surveying and mapping professional processing are respectively carried out according to task types. Specifically, the satellite ground station receives the satellite raw data and uses a unified raw data processing device to decrypt, decompress and format the raw data. And then, uniformly performing data storage, preprocessing, image radiation correction, geometric correction and other processes on the original data by using the integrated computing cluster equipment to realize the production of 0-2-level common basic products. And finally, respectively carrying out remote sensing professional processing and surveying and mapping professional processing according to different task types. Wherein, when the production and surveying and mapping professional treatment of 0-2 level common basic products are carried out, satellite attitude and orbit data are combined. And the production of 0-2 level common basic products is carried out by adopting a uniform data product information format and standard specifications.
Referring to fig. 4, the fusion application of the present invention under the unified spatial reference framework comprises two layers. Firstly, mapping products produced by the system provide basic base maps including an orthophoto map, a digital elevation model, a digital line drawing, a digital grid model and the like for remote sensing application, unify spatial reference, unified scale and precision, and provide basic conditions for building a remote sensing target situation on one map. The method is characterized in that a diagram refers to the space reference, scale and precision characteristics of consistency of remote sensing target situations constructed by a plurality of remote sensing application products under the support of surveying and mapping professional products. In addition, the DEM product produced by mapping processing can provide basic elevation information for the production of standard products of satellite images in the same area, so that the image positioning precision is improved, and the capacity and level of remote sensing application are further improved. Therefore, in the invention, professional products are produced according to the requirements of users, and then the remote sensing target situation is constructed on one graph. Specifically, the standard products of the satellite images in the same area are produced by using the basic elevation information provided by the DEM products produced by mapping. And then, producing a remote sensing professional product and a surveying and mapping professional product according to the product types, wherein the surveying and mapping professional product provides a basic base map, a uniform space reference, a uniform scale and precision for remote sensing application. And finally, constructing a remote sensing target situation in one image by using a remote sensing professional product.
In summary, the aerospace satellite remote sensing mapping fusion application method of the invention unifies common business functions such as observation requirement processing (standardized observation requirement processing), raw data processing, attitude and orbit data processing, system level geometric correction and radiation correction, and basic data organization management on the basis of unification such as unified resource catalog, secondary development standardization, data standardization (basic data product standardization), (processing) service interface, authority verification, and process support, and provides a processing process from observation task planning and raw data processing to data product fusion application, so that mapping products are fused into the business process of standard product production, and remote sensing mapping requirement planning, basic data management, common data unified production, and data product fusion application are realized. The process is realized under the three-layer technical framework of basic service, common service and business processing oriented to the fusion application. The method has the characteristics of strong universality of a technical system and high operation integration degree, is particularly suitable for the comprehensive application of the remote sensing satellite with the stereo imaging capability, and can expand the application of the remote sensing satellite. The method is also suitable for the design and development of ground systems with the tasks of satellite remote sensing and surveying and mapping, namely the comprehensive construction and combined application of two ground systems such as a surveying and mapping satellite, a remote sensing satellite and the like. Therefore, the ground system constructed by the method has the characteristics of strong adaptability of diversified tasks, good system universality and high integration level, and can effectively improve the construction benefit of the ground system and the on-orbit application efficiency of the satellite.
Therefore, the invention relates to links such as satellite data processing, remote sensing application product and surveying and mapping professional product production, product sharing and distribution and the like besides demand planning. Mainly from the integration of earth observation satellite remote sensing and surveying and mapping application, the system architecture, the application process, the product specification and other contents are mainly designed. The method is mainly suitable for the comprehensive application of the remote sensing satellite with the stereo imaging capability and also suitable for the comprehensive construction and the combined application of two ground systems such as a surveying and mapping satellite, the remote sensing satellite and the like.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An application method of aerospace remote sensing mapping fusion comprises the following steps:
a. collecting user requirements and uniformly arranging satellite observation tasks;
b. uniformly processing the original data to produce standard products;
c. and producing professional products according to the user requirements, and constructing a remote sensing target situation.
2. The fusion application method of space remote sensing, surveying and mapping according to claim 1, wherein in the step (a), the user requirements are divided into remote sensing requirements and surveying and mapping requirements according to task types;
and carrying out format standardization processing on the remote sensing requirement and the surveying and mapping requirement, determining a requirement planning criterion, and uniformly arranging satellite observation tasks according to the requirement planning criterion.
3. The fusion application method of space remote sensing mapping according to claim 2, wherein the remote sensing requirements include target information, target location, imaging mode, imaging time, data type;
the mapping requirements include imaging region, stereo imaging mode, imaging time, data type.
4. The fusion application method of space remote sensing mapping according to claim 2, wherein quantification, timing analysis and conflict resolution are performed on each demand based on satellite platform load constraint, mapping base height ratio constraint and ground station transit time.
5. The fusion application method of space remote sensing, surveying and mapping according to claim 2, wherein the demand planning criteria include task priority, aging priority and comprehensive benefit priority, and a satellite observation demand is generated based on the demand planning criteria as an input of satellite mission planning.
6. The method for fusion application of space remote sensing mapping according to claim 1, wherein in step (b), satellite raw data is received, and the raw data is decrypted, decompressed and formatted;
based on the formatted data, performing image radiation correction and geometric correction to complete the production of 0-2 level common basic products;
respectively carrying out remote sensing professional processing and surveying and mapping professional processing according to different task types;
when the production and surveying and mapping professional treatment of 0-2 level common basic products are carried out, satellite attitude and orbit data are combined;
and producing 0-2 level common basic products by adopting a uniform data product information format and standard specifications.
7. The fusion application method for space remote sensing mapping according to claim 6, wherein in step (c), the basic elevation information provided by DEM products produced by mapping professional processing is used for producing standard products of satellite images in the same area;
the method comprises the steps of producing remote sensing professional products and surveying and mapping professional products according to product types, wherein the surveying and mapping professional products provide basic base maps with uniform spatial reference, uniform scale and precision characteristics for remote sensing application, and on the basis, the remote sensing professional products are utilized to construct a remote sensing target situation map.
8. The fusion application method for space remote sensing, mapping and mapping according to claim 7, wherein the base map comprises an orthophoto map, a digital elevation model, a digital line drawing, and a digital grid model.
9. A system for implementing the method for fusion application of space remote sensing mapping according to any one of claims 1-8, comprising:
the basic service layer comprises a set of data, software and specifications for supporting remote sensing service and surveying and mapping service operation;
the common service layer comprises a common processing function set oriented to remote sensing application, mapping application and fusion application thereof;
and the business processing layer is used for realizing fusion of business processing flows, scheduling each functional module of the common service layer, and completing overall planning of remote sensing surveying and mapping requirements, observation task planning and basic data unified production.
10. The fusion application system of space remote sensing mapping according to claim 9, wherein the basic service layer comprises basic data product and professional application product resource directory, secondary development of professional application processing plug-in, data product, universal basic service calling interface, user permission verification, process modeling and driving interface and tool;
the common service layer functions comprise remote sensing mapping requirement normalization processing, original data processing, attitude and orbit data processing, system-level geometric correction and radiation correction and basic data organization and management.
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