A SysML-based business process modeling method for ship target characteristic data applications

Abstract

This invention belongs to the field of systems engineering technology and relates to a SysML-based modeling method for ship target characteristic data application business processes. Taking the ship target characteristic data application business process as a guide, and focusing on ship business scenarios, this method analyzes the interaction of each process step with target characteristic data through logical analysis and model building of the application links in the business process, and establishes the relationship between data application requirements and target characteristic data. The method mainly includes the following steps: (1) determining the ship target characteristic data modeling elements; (2) analyzing the ship target characteristic data application scenarios; (3) developing a ship target characteristic data application business process model; (4) defining ship target features and target characteristic data; (5) sorting out the ship target characteristic data application links; and (6) establishing the correlation between ship target characteristic data and characteristic data.

Description

Technical Field

[0001] This invention belongs to the field of model-based systems engineering technology, specifically relating to a SysML-based method for modeling business processes for ship target characteristic data applications. Background Technology

[0002] Target characteristic data refers to the features and attributes of a target collected and integrated from multiple sources. This data can cover various aspects of the target, including physical characteristics, behavioral patterns, and the target's surrounding environment. These diverse data sources provide comprehensive, multi-dimensional information about the target's characteristics.

[0003] Target characteristic and feature data, as one of the most important and fundamental resources for information security, influences the perception, inference, and decision-making regarding targets. It forms the foundation for supporting the development of information technology and leveraging information advantages. Research on the acquisition, processing, and application of target characteristic data is extremely important for the development of modern information technology. However, because target characteristic data encompasses a large number of target samples and observational data, the complexity of analyzing and mining target characteristic data is greatly increased.

[0004] Ship target characteristic data encompasses the generation, transmission, and application of data related to ship targets. With the development of information technology and sensor technology, new demands have arisen for the application of ship target characteristic data. Existing technologies for processing and modeling ship target characteristic data applications largely focus on how to utilize existing data and sensor parameters for theoretical calculations or processing to obtain characteristic data. They fail to explore the application processes of target characteristic data from the perspective of business workflows, and current technologies cannot establish the relationship between the application requirements of target characteristic data and the target feature data itself. Summary of the Invention

[0005] The purpose of this invention is to provide a SysML-based business process modeling method for ship target characteristic data applications, so as to improve the effective connection between target characteristic data application requirements and engineering technology research results, and fully utilize target characteristic data to serve the application chain.

[0006] To solve this technical problem, the technical solution of the present invention is as follows:

[0007] A SysML-based method for modeling business processes for ship target characteristic data applications includes the following steps:

[0008] Step 1: Determine the modeling elements for ship target characteristic data: Based on the application scope of ship target characteristic data, sort out and determine the basic concepts in the application of ship target characteristic data, and build modeling elements specific to the ship target characteristic data domain by integrating domain expertise based on SysML, including but not limited to entities, relationships, attributes, etc., to express the business process of ship target characteristic data application.

[0009] Step 2: Analyze the application scenarios of ship target characteristic data: Analyze the actual application environment and scenarios of ship target characteristic data, and describe the marine environment, target and the order of tasks performed by the ship when the ship target characteristic data is used;

[0010] Step 3: Develop a business process model for ship target characteristic data application: sort out the basic business application process of target characteristic data in the application scenario, establish a SysML activity diagram of the business application process according to the system architecture framework standard, and verify the model through simulation.

[0011] Step 4: Define ship target characteristics and target feature data: Organize and define the concepts in the ship target feature domain at different levels to ensure the representation of feature data concepts required for the coverage process, thus supporting the standardized modeling of application business processes.

[0012] Step 5: Analyze the application links of ship target characteristic data: Analyze the application links contained in each business process, identify the target characteristic data required for each application link, and build a model according to the system architecture framework standard;

[0013] Step 6: Establish the relationship between ship target characteristic data and feature data: Through SysML parameter graph, establish the relationship between target characteristic data and basic data, and form a data mapping relationship graph accordingly to facilitate the traceability of target characteristic model data application requirements.

[0014] In step 4, which targets ships, the specific operations are as follows:

[0015] Step 41: Define ship target characteristics: sort out the original performance characteristics of ship targets, classify the original performance characteristics, and use the SysML model for standardized description and expression;

[0016] Step 42: Define ship target characteristic data: Analyze the core concepts and hierarchical structure of ship target characteristic data required in various business activity processes, sort out the target characteristic data, and use the SysML model for standardized description and expression.

[0017] In step 5, the specific steps for building the model for the ship target are as follows:

[0018] Step 51: Model the application process of ship target characteristic data: With the goal of a closed loop for the application process of ship target characteristic data, decompose the business process, sort out the domain concepts of the process links, and carry out modeling of each process link for ship targets; use SysML activity diagrams to analyze the application requirements of each process link for target characteristic data, and clarify the information exchange relationship between business activities and business elements.

[0019] Step 52: Establish a mapping between ship target characteristic data application links and business processes: Analyze and construct the correspondence between relevant application links and business processes to represent the application links included in the business process.

[0020] The specific operation of step 6 is as follows:

[0021] Step 61: Define and establish the relationship between ship target characteristic data: Define the constraints of target characteristic data and feature data through SysML parameter diagram, constrain the relationship between each parameter, and establish the association between ship target characteristic data and feature data;

[0022] Step 62: Establish data mapping relationship: Based on the constraint relationship of ship target characteristic parameters defined in the parameter diagram, form a data mapping relationship diagram to ensure the integrity and traceability of ship target characteristic data application requirements.

[0023] For ship targets, the entities include application systems, application nodes, business process activities, resource function activities, resource information, application scenarios, application links, tasks, scenario targets, conditions, location areas, environment, resources, observation objects, target characteristics, target characteristic data, and application data.

[0024] The relationships include sequence, phases, have, implements, perform, impact, input, output, and association. Sequence refers to one modeling element preceding another within a time frame; phase assignment refers to a scene objective being assigned to a task; have refers to one modeling element containing another; implement refers to how a higher-level abstract modeling element is implemented through a lower-level abstract modeling element; perform refers to the traceability between a modeling element and the activities it can perform; impact indicates that one modeling element is influenced by another; input and output relationships respectively indicate that one modeling element is an input or output of another; and association refers to a relationship that has a direct or indirect connection with another modeling element.

[0025] The attributes include the application environment, application location, and application system of the application scenario; the measurement of target features; the measurement of target characteristic data; the measurement of application data; and the target of the task.

[0026] When analyzing the application scenarios of ship target characteristic data, the elements involved include the application scenario, scenario target, and task.

[0027] The relationships involved may include the sequential relationship between task phases, the allocation phase relationship between scenario objectives and task phases, etc.

[0028] The attributes involved include those related to the application scenario, such as the application environment and application location.

[0029] The application environment attribute describes the environment in the application scenario, such as sea conditions: sea condition level 3, sea condition level 4, etc.

[0030] The application location attribute should describe the location area of ​​the sea area, such as the latitude and longitude of the sea area.

[0031] For ship targets, the business process described in step 3 includes detecting ship targets, collecting ship target feature data, preprocessing feature data, extracting characteristic data, estimating ship target features, and judging and identifying them.

[0032] The ship target characteristics mentioned in step 41 include geometric characteristics, structural characteristics, motion characteristics, and environmental coupling characteristics;

[0033] Geometric features include length, width, and shape outline;

[0034] Structural features include blade characteristics, material characteristics, and key equipment; blade characteristics include the number of blades and blade shaft frequency; material characteristics can be further refined into main material type and material distribution;

[0035] Motion characteristics primarily describe the speed of a ship target; motion characteristics include speed, distance, and heading.

[0036] Environmental coupling characteristics primarily consider wake characteristics; these include wake characteristics, infrared characteristics, etc. Furthermore, when defining target characteristics, the measurement units for each characteristic must be defined simultaneously.

[0037] The ship target characteristic data mentioned in step 42 includes optical target characteristic data, acoustic target characteristic data, electromagnetic target characteristic data, and infrared target characteristic data;

[0038] Acoustic target characteristic data includes acoustic radiation characteristic data and acoustic scattering characteristic data. For ship targets, the acoustic radiation characteristic data includes modulation spectrum characteristic data, line spectrum characteristic data, transient signals, time-frequency distribution characteristics, azimuth rate of change, and broadband characteristics; the acoustic scattering characteristic data includes echo characteristics, echo intensity, and echo spot intensity. The modulation spectrum characteristic data is measured by the number of modulation line spectra, modulation line spectrum frequency, and modulation depth. When defining ship target characteristic data, the metrics for the target characteristics must be determined.

[0039] Preferably, in step 61, the relationship between the parameters is constrained by analytical expressions or data lookup tables.

[0040] The beneficial effects of this invention are:

[0041] This invention uses the business process of ship target characteristic data application as a guide, focusing on ship business scenarios. Through logical analysis and model building of the application links in the business process, it analyzes the interaction of each process link with target characteristic data, and establishes the relationship between ship target characteristic data application requirements and target feature data. This method associates ship target characteristic data application requirements with feature data, which helps to identify target characteristics in business applications to detect anomalies and provide early warnings. It can also help in decision-making and strategy formulation, and has strong practical application value.

[0042] (1) The present invention provides a modeling method for the application business process of ship target characteristic data based on SysML. Considering the application scenarios of ship target characteristic data, by using the system architecture method and SysML language, the application requirements of ship target characteristic data are effectively connected with the target characteristics based on sorting out the application process of ship target characteristic data, and the results of ship target characteristic data are fully used to serve the application link.

[0043] (2) This invention reduces the complexity of mining target characteristic data application requirements by modeling the business process of ship target characteristic data application and analyzing the target characteristics covered by the target characteristic data.

[0044] (3) The present invention can realize the association of behavior between models and the association of information between data, ensuring the traceability and reusability of ship target characteristic data application requirements. Attached Figure Description

[0045] To more clearly illustrate the technical solutions implemented in this invention, the accompanying drawings used in the embodiments of this invention will be briefly explained below. Obviously, the drawings described below are merely some embodiments of this invention. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0046] Figure 1 This is a schematic diagram of the steps in the method of the present invention;

[0047] Figure 2 Example diagram of ship target characteristic data modeling elements in the method of the present invention;

[0048] Figure 3 This is a diagram defining the elements for modeling ship target characteristic data in an embodiment of the present invention.

[0049] Figure 4 This is an analysis diagram of the application scenarios in the embodiments of the present invention;

[0050] Figure 5This is the business process model in the implementation examples of the present invention;

[0051] Figure 6 This is a diagram defining the target features in an embodiment of the present invention;

[0052] Figure 7 This is a diagram defining the target characteristic data in an embodiment of the present invention;

[0053] Figure 8 This is a model of the application process in the implementation examples of this invention;

[0054] Figure 9 This is a mapping diagram of the application links and business processes in the implementation examples of this invention;

[0055] Figure 10 This is a diagram showing the constraint relationship between target characteristic data and feature data in an embodiment of the present invention.

[0056] Figure 11 This is a data mapping relationship diagram in an embodiment of the present invention. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] The features of various aspects of the embodiments of the present invention will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can also be practiced without these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples. The invention is not limited to any specific setups and methods provided below, but covers all improvements, substitutions, etc., to product structures and methods without departing from the spirit of the invention.

[0059] In the various accompanying drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the invention.

[0060] The process of the method of the present invention is as follows: Figure 1As shown, taking the acoustic target characteristic data and the ship target features it reflects in the ship target characteristic data as an example, this invention applies a SysML-based business process modeling method for ship target characteristic data applications. Specifically, this implementation case uses modulation spectrum characteristic data and echo characteristic data in the acoustic target characteristic data as a simple example to describe the method, which mainly includes the following steps:

[0061] Step 1: Determine the modeling elements for ship target characteristic data. Based on the application scope of ship target characteristic data, identify the basic concepts and elements in the application of ship target characteristic data. Using SysML as the foundation and integrating domain expertise, construct modeling elements specific to the ship target characteristic data domain, including but not limited to entities, relationships, attributes, and constraints, to express the business processes of ship target characteristic data application.

[0062] Specifically, the basic concepts and elements of the acoustic target characteristic data considered in the application:

[0063] Entities include application systems, application nodes, business process activities, resource function activities, resource information, application scenarios, application links, tasks, scenario objectives, conditions, actual conditions, location areas, actual location areas, environment, actual environment, resources, observation objects, target characteristics, target characteristic data, and application data. The difference between an entity and an "actual" entity lies in the entity definition type; an actual entity represents an instance of the defined class. For example, "environment" defines the sea state level 4 in which the scenario occurs, while "actual environment" can represent a more detailed instance of sea state level 4: waves with distinct shapes, wave heights of 2 meters, and widespread white waves on the sea surface.

[0064] Relationships include sequence, phases, implementations, performance, input, and output.

[0065] The attributes include the application environment, application location and application system of the application scenario, the measurement of target characteristics, the measurement of target characteristic data, the measurement of application data, and the goal of the task.

[0066] After determining the modeling elements for ship target characteristics data, the elements included in each modeling step and the constructed view form are analyzed, and a model view is formed based on the system mechanism modeling platform. For example... Figure 3 As shown, the modeling elements for analyzing ship target characteristic data application scenarios in step 2 include application scenario, application link, task, scenario target, conditions, actual conditions, location area, actual location area, environment, and actual environment; the modeling elements for conducting ship target characteristic data application link modeling in step 51 include resource function activities and resource parameters.

[0067] Step 2: Analyze the application scenarios of ship target characteristic data. For example... Figure 4 The illustration shows an analysis of a practical application environment and scenario for acoustic target characteristic data. The scenario takes place in a sea area with a sea state of level 4, and the task is to identify an unknown target in that sea area. In this scenario, a series of tasks are carried out sequentially: target discovery, data collection and analysis, and target assessment and identification. The objective of target discovery is to successfully locate the target when it appears; the objective of data collection and analysis is to complete data collection; and the objective of target assessment and identification is to identify whether the target is friend or foe, and its type.

[0068] Step 3: Develop a business process model for applying ship target characteristic data. The business application process for acoustic target characteristic data in the application scenario includes detecting ship targets, collecting ship target feature data, preprocessing feature data, extracting characteristic data, estimating ship target features, and determining and identifying them. A SysML activity graph model is constructed using a system architecture modeling platform. The model includes the above business process steps, such as... Figure 5 As shown, the architecture simulation function of the system architecture modeling platform can be used to verify the business model.

[0069] Step 4: Define ship target features and target characteristic data. Organize and define the concepts in the ship target characteristic domain at different levels to ensure the expression of characteristic data concepts required for the coverage process, thereby supporting the standardized modeling of application business processes.

[0070] Step 41: Define Ship Target Characteristics. Identify the original performance characteristics of the ship target, including geometric features, structural features, kinematic features, and environmental coupling features. Geometric features include length and width; structural features include blade characteristics and material characteristics. Blade characteristics include the number of blades and shaft frequency, while material characteristics can be refined to the main material type; kinematic features primarily describe the ship target's speed; environmental coupling features mainly consider wake characteristics. Define and reference target characteristics and their measures hierarchically using a SysM module definition diagram, such as... Figure 6 As shown.

[0071] Step 42: Define Ship Target Characteristic Data. Define the core concepts and hierarchical structure of acoustic target characteristic data required in various business processes. Acoustic target characteristic data includes acoustic radiation characteristic data and acoustic scattering characteristic data. Ship acoustic radiation characteristic data includes modulation spectrum characteristic data, line spectrum characteristic data, transient signals, etc.; acoustic scattering characteristic data includes echo characteristics, echo intensity, and echo spot intensity, etc. The measures of modulation spectrum characteristic information include the number of modulation line spectra, modulation line spectrum frequency, and modulation depth. Define the acoustic target characteristic data and its measures hierarchically through the SysML module definition diagram, such as... Figure 7 As shown.

[0072] Step 5: Analyze the application stages of ship target characteristic data. Analyze the application stages included in each business process, identify the target characteristic data required for each application stage, and build a model according to the system architecture framework standard.

[0073] Step 51: Conduct modeling of the ship target characteristic data application process. With the goal of creating a closed-loop process for ship target characteristic data application, decompose the business process and clarify the domain concepts of related process steps, such as... Figure 8 The diagram illustrates the modeling of each process step using SysML activity diagrams. The acoustic radiation characteristic identification process includes target detection, noise radiation, data acquisition, noise feature extraction, and target feature estimation. The information exchanged between the noise feature extraction and target feature estimation steps includes modulation spectrum characteristics and line spectrum characteristics. The noise feature extraction step can be further refined and structured, including preprocessing, bandpass filtering, and detection activities, which will not be elaborated upon here.

[0074] Step 52: Establish a mapping between ship target characteristic data application stages and business processes. Based on the application stages identified in Step 51, analyze and construct the correspondence between data elements in the relevant application stages and the business processes in Step 2, such as... Figure 9 As shown, the horizontal axis represents the application stage, the vertical axis represents the business process, and the arrows indicate the implementation relationship between the two. For example, application stages such as low-pass filtering and power spectrum analysis are all related to the characteristic data extraction business process.

[0075] Step 6: Establish the correlation between ship target characteristic data and feature data. Using SysML parametric diagrams, establish the correlation and dependency relationships between target characteristic data and basic data, and form a data mapping relationship diagram accordingly, facilitating the traceability of target characteristic model data application requirements.

[0076] Step 61: Define and establish the relationships between relevant data of ship target characteristics. Define the constraints between target characteristic data and feature data through SysML parametric diagrams. Rely on analytical expressions or data lookup tables to constrain the parameters and establish the mapping relationship between target characteristic data and target feature data.

[0077] For example, the relationship between Doppler shift and target velocity is shown in equation (1).

[0078]

[0079] In this formula, the sign is positive when the target is close and negative when it is far away; c is the speed of sound in seawater, and f is the frequency of the incident wave. This is used when the active sonar operates at a frequency of 100kHz and the speed of sound in seawater is 1500m / s.

[0080] Based on this constraint, a relationship is established between echo characteristic data and ship geometric features, such as... Figure 10 As shown. The left side shows the length, number of propeller blades, propeller shaft frequency, and speed of the ship target characteristics; the right side shows the echo characteristics and modulation spectrum characteristics of the ship target characteristic data; and the middle shows the description of the constraint relationship between the two when extracting data.

[0081] Step 62: Establish data mapping relationships.

[0082] Based on the constraints of ship target characteristic parameters defined in the parametric diagram, ship target characteristic data is associated with target features to form a data mapping diagram. This allows the application requirements of ship target characteristic data to be traced back to the target features. For example... Figure 11 As shown, the modulation spectrum characteristics data can be traced back to the structural features of the ship target. Figure 11 (a) shows the hierarchical structure of ship target features, and (b) shows the target characteristic data traceability relationship.

[0083] It should be noted that the above process operations can be combined to varying degrees. For the sake of simplicity, the implementation methods of various combinations will not be elaborated further. Those skilled in the art can flexibly adjust or combine the order of the steps of the above method (or the position of the components of the product) according to the actual situation.

[0084] It should be noted that the functional components shown in the above embodiments can be implemented in hardware, software, or a combination of both.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A method for modeling business processes for ship target characteristic data applications based on SysML, characterized in that, Includes the following steps: Step 1: Determine the modeling elements for ship target characteristic data: Based on the application scope of ship target characteristic data, sort out and determine the basic concepts in the application of ship target characteristic data, and construct the modeling elements of the ship target characteristic data domain based on SysML, including entities, relationships, and attributes, to express the business process of ship target characteristic data application. Step 2: Analyze the application scenarios of ship target characteristic data: Analyze the actual application environment and scenarios of ship target characteristic data, and describe the marine environment, target and the order of tasks performed by the ship when the ship target characteristic data is used; Step 3: Develop a business process model for ship target characteristic data application: sort out the business application process of target characteristic data in the application scenario, establish a SysML activity diagram of the business application process according to the system architecture framework standard, and verify the model through simulation. Step 4: Define ship target characteristics and target feature data: Organize and define the concepts in the ship target feature domain at different levels to ensure the representation of feature data concepts required for the coverage process, thus supporting the standardized modeling of application business processes. Step 5: Analyze the application links of ship target characteristic data: Analyze the application links contained in each business process, identify the target characteristic data required for each application link, and build a model according to the system architecture framework standard; Step 6: Establish the relationship between ship target characteristic data and feature data: Through SysML parameter graph, establish the relationship between target characteristic data and feature data, and form a data mapping relationship graph accordingly, which facilitates the traceability of target characteristic model data application requirements.

2. The method according to claim 1, characterized in that: In step 4, which targets ships, the specific operations are as follows: Step 41: Define ship target characteristics: sort out the original performance characteristics of ship targets, classify the original performance characteristics, and use the SysML model for standardized description and expression; Step 42: Define ship target characteristic data: Analyze the core concepts and hierarchical structure of ship target characteristic data required in various business activity processes, sort out the target characteristic data, and use the SysML model for standardized description and expression.

3. The method according to claim 1, characterized in that: In step 5, the specific steps for building the model for the ship target are as follows: Step 51: Model the application process of ship target characteristic data: With the goal of closing the process of ship target characteristic data application, decompose the business process, sort out the domain concepts of the process links, and carry out modeling of each process link for ship targets. Using SysML activity diagrams, we analyze the application requirements of target characteristic data in each process stage and clarify the information exchange relationships between business activities and business elements. Step 52: Establish a mapping between ship target characteristic data application links and business processes: Analyze and construct the correspondence between relevant application links and business processes to represent the application links included in the business process.

4. The method according to claim 1, characterized in that: The specific operation of step 6 is as follows: Step 61: Define and establish the relationship between ship target characteristic data: Define the constraints of target characteristic data and feature data through SysML parameter diagram, constrain the relationship between each parameter, and establish the association between ship target characteristic data and feature data; Step 62: Establish data mapping relationship: Based on the constraint relationship of ship target characteristic parameters defined in the parameter diagram, form a data mapping relationship diagram to ensure the integrity and traceability of ship target characteristic data application requirements.

5. The method according to claim 1, characterized in that: For ship targets, the entities include application systems, application nodes, business process activities, resource function activities, resource information, application scenarios, application links, tasks, scenario targets, conditions, location areas, environment, resources, observation objects, target characteristics, target characteristic data, and application data; The relationships include sequence, definition phase, ownership, realization, execution, influence, input, output, and association; The attributes include the application environment, application location and application system of the application scenario, the measurement of target features, the measurement of target characteristic data, the measurement of application data, and the target of the task; When analyzing the application scenarios of ship target characteristic data, the elements involved include the application scenario, scenario target, and task. The relationships involved include the sequential relationship between task phases and the allocation phase relationship between scenario objectives and task phases; The attributes involved include those related to the application scenario: application environment and application location.

6. The method according to claim 5, characterized in that: The sequential relationship refers to one modeling element preceding another within a time frame; the assignment phase relationship refers to a scene objective being assigned to a task; the ownership relationship refers to one modeling element containing another modeling element; the realization relationship refers to how a higher-level abstract modeling element is realized through a lower-level abstract modeling element; and the execution relationship refers to the traceability relationship between a modeling element and the activities it can perform. Influence relationship is used to indicate that one modeling element is influenced by another modeling element; input relationship and output relationship indicate that one modeling element is the input or output of another modeling element, respectively; association relationship refers to a relationship that has a direct or indirect connection with another modeling element.

7. The method according to claim 5, characterized in that: The application environment attribute describes the environment in the application scenario; the application location attribute describes the location area of ​​the sea area.

8. The method according to claim 1, characterized in that: For ship targets, the business process described in step 3 includes detecting ship targets, collecting ship target feature data, preprocessing feature data, extracting characteristic data, estimating ship target features, and judging and identifying them.

9. The method according to claim 1, characterized in that: For ship targets, the ship target characteristics mentioned in step 41 include geometric characteristics, structural characteristics, motion characteristics, and environmental coupling characteristics; Geometric features include length, width, and shape outline; Structural features include blade features, material features, and key equipment; blade features include the number of blades and blade shaft frequency; material features can be further refined into main material type and material distribution; Motion characteristics describe the speed of ship targets, including speed, distance, and heading; Environmental coupling characteristics include wake characteristics and infrared characteristics.

10. The method according to claim 2, characterized in that: The ship target characteristic data mentioned in step 42 includes optical target characteristic data, acoustic target characteristic data, electromagnetic target characteristic data, and infrared target characteristic data; Acoustic target characteristic data includes acoustic radiation characteristic data and acoustic scattering characteristic data; For ship targets, the acoustic radiation characteristic data includes modulation spectrum characteristic data, line spectrum characteristic data, transient signals, time-frequency distribution characteristics, azimuth change rate, and broadband characteristics; the acoustic scattering characteristic data includes echo characteristics, echo intensity, and echo spot intensity; the modulation spectrum characteristic data is quantified by the number of modulation line spectra, modulation line spectrum frequency, and modulation depth; when defining ship target characteristic data, the quantification of target characteristics needs to be determined.

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