JP2006202035A - Distributed simulation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a distributed simulation system for accurately and quickly executing analysis or examination operations related with air defense by providing much more information to a user. <P>SOLUTION: The two-dimensional display of each federate is operated by using an RTI of HLA specification being one of middleware to be used in a distributed environment. Furthermore, three-dimensional display is realized by using data on the TCP/IP. That is, each federate is provided with not only an interface for RTI and an interface for TCP/IP, and the unitary collection of status data is executed through TCP/IP so that two-dimensional information and three-dimensional information can be simultaneously and visually displayed. Thus, it is possible for an operator to instantaneously grasp the altitude, position and speed of the federate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a distributed simulation system in which a plurality of objects existing in a distributed environment exchange information via a common infrastructure such as RTI (Run-Time Infrastructure). In particular, the present invention relates to a distributed simulation system applied to an air defense flying object system or the like.

  Recent advances in software technology have been remarkable, and technologies such as Model Driven Architecture (MDA) have been developed (see, for example, Non-Patent Document 1). In recent years, demand for simulation systems has increased in various fields. Against this background, HLA (High Level Architecture) has been formulated for the purpose of improving reusability and interoperability of simulation systems developed in the past and reducing future development and maintenance costs.

  The HLA is a specification for connecting different simulation systems, and includes rules, an object model template (OMT), and interface specification elements. Of these elements, the interface specification is implemented by RTI. In particular, a simulation object having an interface specification that can be connected to an RTI is called a federation, and the set, that is, the entire simulation, is called a federation.

By forming a simulation system based on such a framework, resources developed in the past can be used effectively, and a large-scale system in a distributed environment can be built, resulting in significant benefits. be able to. In recent years, flying object models such as ballistic ammunition models have been applied to this type of simulation system to help study missile defense in air defense systems.
A related technique is disclosed in Patent Document 1 below. This document discloses an RTI (Run-Time Infrastructure) wrapper used for programs such as simulation (federation) compatible with HLA (High Level Architecture).
JP 2001-265622 A Toshiba Review Vol.59 No.11 (2004) P51-55

  By the way, in the existing air defense simulation system, the role of each model is assigned to each of a plurality of personal computers forming the system. For example, the role of radar is assigned to computer A, the role of aircraft is assigned to another computer B, and so on. The movement of the assigned model is visually displayed on the monitor of each computer.

However, in the existing system, the display mode of the monitor screen is a flat display, and only the appearance seen from the sky is displayed, so the information provided to the user is very limited. For this reason, it is impossible to read the altitude difference between the objects meeting each other when grasping the situation such as the meeting of the flying objects and the meeting (intercept). In such a situation where the difference in altitude between models is important, it is very difficult to understand the situation with existing systems, and it is difficult to effectively carry out analysis, analysis, and examination related to air defense. There is a problem that. Furthermore, even in the actual operation of the air defense system, it is not preferable because it causes delays in command and judgment of air defense commanders and operators, and misjudgments (errors).
The present invention has been made under the circumstances described above, and its purpose is to provide a distributed simulation system that enables a user to provide more information, thereby enabling more accurate and quick implementation of air defense analysis and examination work. It is to provide.

  To achieve the above object, according to one aspect of the present invention, an application program loaded on each of a plurality of computers connected to each other via a network transmits information between a plurality of simulation models existing in a distributed environment. A plurality of simulation models, each of which includes a connection interface to the common base and a communication interface in a layer different from the common base. A state data collecting unit that collects state data of each of the plurality of simulation models via the communication interface, and the plurality of simulation models based on the state data collected by the state data collecting unit Distributed simulation system, characterized by comprising a display control means for visually displaying three-dimensional positional relationship is provided.

  By taking such means, the state data of each simulation model is collected in a unified manner. The state data includes the position, altitude, trajectory information, flight course, destruction information of each simulation model. Based on this data, the three-dimensional positional relationship of a plurality of simulation models is calculated and displayed graphically. This makes it possible for the operator to recognize the altitude difference between the models at a glance, and to perform analysis, analysis, examination, etc. regarding air defense faster and more accurately than existing systems. Further, when conducting training, education, etc. for commanders and operators, it is possible to take advantage of these advantages to reduce delays in command and judgment, and mistakes (errors). Furthermore, since data for three-dimensional display can be exchanged in a layer different from the exchange of data on RTI, there is also an advantage that the processing load of RTI can be reduced.

  According to the present invention, it becomes possible to provide a user with a lot of information, thereby providing a distributed simulation system that can perform analysis and examination work on air defense more accurately and quickly.

  FIG. 1 is a system configuration diagram showing an example of an air defense system to be simulated by the distributed simulation system according to the present invention. The air defense system of FIG. 1 includes a plurality of FUs 11 and a shooting network 13 that connects the FUs 11 and enables mutual exchange of information. Each FU 11 includes a flying object launching device 11a realized as an anti-aircraft cannon (gun), a guided bullet launching device, and the like, and a fire control system (FCS: Fire Control System) 11b that comprehensively controls each flying object launching device 11a. And a radar 11c that acquires information related to the target to be attacked.

  Each FU is assigned an air defense area corresponding to a predetermined air area in advance, and each FU has its own air defense capability within the air defense area. The FCS 11b performs processing such as target assignment to the flying object launching device 11a based on target information acquired by the radar 11c and various information notified from other FUs.

  FIG. 2 is a system diagram showing an embodiment of an air defense simulation system according to the present invention. The system of FIG. 1 is deployed in a geographical area, whereas the system of FIG. 2 is a system formed mainly by a LAN (Local Area Network). The system of FIG. 2 is used to imitate the operation of the system of FIG. 1 by simulation, and based on the result, air defense strategy optimization, tactics estimation, and the like are performed. In the present embodiment, so-called simulation is referred to as federation. Federation is a term defined in the HLA interface specification realized based on RTI, and a simulation model that appears during federation is called federation.

  In FIG. 2, a plurality of computers PC1 to PC3 such as a laptop PC are connected to each other via a LAN 100 to form a distributed processing environment. The computers PC1 to PC3 include an interface unit (I / F) 21, a display unit 22, a storage unit 23, a control unit 24, and a user interface unit 25 that serve as an intermediary for exchanging information with other computers via the LAN 100. With. The storage unit 23 stores scenario data 23a for defining the behavior of each federation in a predetermined storage area. The storage unit 23 of each of the PC1 to PC3 stores a peripheral terrain database 23b as a digital map indicating the three-dimensional terrain data of the air defense area. The user interface unit 25 includes a keyboard, a mouse (not shown), and the like, and accepts a user operation using a GUI (Graphical User Interface) environment on the display unit 22.

  The control unit 24 of the PC 1 receives the RTI. an exe file (reference numeral 24a) and a federation application 24b. RTI. The exe file 24a is a control program for causing the control unit 24 to operate as an execution body for providing the RTI environment. The federation application 24b is a control program for realizing federation according to various specifications requested by the user. Of these, the federation application 24b is also loaded into the control unit 24 of the PC2 and PC3. Also, the RTI. The exe file (symbol 24a) can be executed by another PC separately from the federation application 24b, and the federation can be realized.

  The federation application 24b in each of the PC1 to PC3 is connected to the RTI. Federation is realized by performing processing such as call, generation, and disappearance of an object under the management of the exe 24a. That is, the federation application 24b and the RTI. The exe 24a forms an environment in which federation proceeds by autonomous determination of federation based on the scenario data 23a. While the federation is in progress, the positional relationship between the federations is two-dimensionally displayed on the monitor screens of the PC1 to PC3 by an existing method. This is shown in FIG.

  In FIG. 3, four screens are shown, and each federation is shown as BM, Airplane, Ship, and SAM at the lower left of each screen. That is, the corresponding federation state is two-dimensionally displayed on the display unit 22 of the PC that plays the role of federation.

  In FIG. 2, the control unit 24 of the PC 3 includes a data collection program 24c as a software processing function according to the present embodiment, in addition to the federation application 24b. The data collection program 24c collects state data of each federation that changes from moment to moment, that is, information such as position, altitude, orbit information, flight course, and defeat information from each federation via the LAN 100. At this time, the data collection program 24c transmits the state data to the three-dimensional drawing program 200a via a protocol different in layer from the RTI, for example, a protocol such as TCP / IP.

  Further, the system of FIG. 2 includes a display PC 200 in which a three-dimensional drawing program 200a is installed. The three-dimensional drawing program 200a receives the state data collected by the data collection program 24c via TCP / IP, calculates the three-dimensional positional relationship of each federation based on this state data, and visually displays it on the monitor. To do.

  FIG. 4 is a conceptual diagram showing the configuration of the federation according to this embodiment. In this federation, enemy aircraft E1, E2, friendly aircraft C1, C2, sensors B1, B2, interceptors D1, D2, control station G1, and indicators F1, F2, F3 serve as simulation models. In addition, there are flying objects H1 and H2 as objects participating in the federation.

  Enemy aircraft E1, E2, friendly aircraft C1, C2, sensors B1, B2, interceptors D1, D2, control station G1, and displays F1, F2, F3 all have interface specifications that can be connected to RTI Realized as a federate participating in the federation. Each federation determines its own behavior semi-autonomously based on information acquired via RTI. Of these, the RTI, enemy aircraft E1, E2, and display F1 are mounted on the computer PC1, and the ally machine C1, interceptor D1, sensor B1, display F2, and control station G1 are mounted on the computer PC2, and display F3, interception. Assume that the device D2, the sensor B2, and the friend machine C2 are mounted on the PC3. Note that the flying objects H1 and H2 can be regarded as objects generated in, for example, PC2 and PC3 when the enemy aircraft intercepts.

  If the communication interface between each of the PC1 to PC3 on the LAN 100 and the display PC 200 is TCP / IP, the RTI is positioned in the upper layer. The display PC 200 does not have a connection interface to the RTI, and performs information communication with each of the PCs 1 to 3 via only TCP / IP.

  That is, each federation has an interface for transmitting and receiving data over TCP / IP in addition to an interface for connecting to the RTI. Specifically, both interfaces can be implemented in each federation by describing these interfaces in C ++ language or the like in the program code that defines each federation.

  FIG. 5 is a schematic view illustrating the display contents of the monitor screen of the display PC 200 of FIGS. This figure displays the flying object model for three time periods, and the positional relationship such as BM, Airplane, Ship, Sensor, and SAM as a federation is three-dimensionally displayed. Furthermore, numerical information such as a symbol such as a BM launcher, a symbol in which a flying object is destroyed, a flight course, a detection time, and a launch time can be displayed together.

  As described above, in the present embodiment, each federation is two-dimensionally displayed using an RTI of the HLA standard, which is one of middleware used in a distributed environment or the like. Furthermore, three-dimensional display is realized using data on TCP / IP. That is, each federation has a TCP / IP interface in addition to an RTI interface, and collects state data centrally via TCP / IP, thereby simultaneously obtaining two-dimensional information and three-dimensional information. Visual display is possible. As a result, the operator can instantly grasp the altitude, position, and speed of the required federation model.

  In other words, normal plane display (two-dimensional display) and display closer to reality (three-dimensional display) can be displayed simultaneously using one system LAN, etc., and analysis, analysis, examination, etc. regarding air defense can be performed. In addition to being faster and faster than before, when using such a system to conduct training, education, etc. for commanders and operators, command and judgment delays and mistakes are reduced. It becomes possible. From these things, it becomes possible to provide a distributed simulation system that allows more information to be provided to the user, thereby enabling more accurate and quick implementation of analysis and examination work relating to air defense.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment, or other components may be added.

The system block diagram which shows an example of the air defense system which the distributed simulation system concerning this invention makes a simulation object. 1 is a system diagram showing an embodiment of an air defense simulation system according to the present invention. The schematic diagram which illustrates the display content of the display part 22 of PC1-PC3 of FIG. The conceptual diagram which shows the structure of the federation implemented by the system of FIG. FIG. 4 is a schematic view illustrating the display content of a monitor screen of the display PC 200 of FIGS. 2 and 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... FU, 11a ... Flying object launcher, 11b ... Fire control system (FCS), 11c ... Radar, 13 ... Shooting network, PC1-PC3 ... Computer,
21 ... interface unit, 22 ... display unit, 23 ... storage unit, 23a ... scenario data, 23b ... peripheral terrain database, 24 ... control unit, 24a ... RTI. exe file, 24b ... federation application, 24c ... data collection program, 25 ... user interface unit, 100 ... LAN, B1, B2 ... sensor, C1, C2 ... ally machine, D1, D2 ... interceptor, E1, E2 ... enemy Machine, F1, F2 ... Display, G1, Control station, H1, H2 ... Flying object, 200 ... Display PC

Claims (3)

Distributed simulation in which application programs loaded on multiple computers connected to each other via a network perform simulation using a common platform that guarantees information transfer between multiple simulation models in a distributed environment A system,
The plurality of simulation models each include a connection interface to the common base and a communication interface in a layer different from the common base,
State data collection means for collecting state data of each of the plurality of simulation models via the communication interface;
A distributed simulation system comprising: display control means for visually displaying a three-dimensional positional relationship among the plurality of simulation models based on the state data collected by the state data collection means; . 2. The distributed type according to claim 1, wherein the simulation is realized under an RTI (Run-Time Infrastructure) for executing each service defined in an HLA (High Level Architecture) interface specification. Simulation system. 2. The distributed simulation system according to claim 1, further comprising means for causing any one of the simulation models to function as the state data collection means.

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