Multi-laboratory collaborative simulation space-time consistency control method

Abstract

A multi-laboratory collaborative simulation space-time consistency control method is characterized in that a set of high-precision satellite time service terminal and a set of time service computer are arranged in a master laboratory, the master laboratory and each slave laboratory are respectively provided with a joint simulation agent computer, and the joint simulation agent computers are provided with two sets of real-time memory networks; the real-time memory network A is used for real-time information interaction among the simulation computers in the laboratory and completing time and data synchronization of each laboratory; the real-time memory networks B of the master laboratory and the slave laboratories are interconnected through a real-time memory network switch, so that the master laboratory sends real-time battle situation data to the slave laboratories, and situation unification among multiple laboratories is realized; according to the invention, a single high-precision satellite time service terminal is adopted, the time synchronization consistency control is good, and the precision is high; and the number of required hardware equipment is small, and the technical implementation complexity and the development cost are low.

Description

Technical Field

[0001] The present invention relates to the field of radio frequency semi-physical simulation, and in particular to a multi-laboratory collaborative simulation time-space consistency control method. Background Art

[0002] The use of semi-physical simulation technology can flexibly construct a dynamic, high-density complex electromagnetic signal environment, which has the advantages of controllable environment, good repeatability, low cost, and large sample size. At the same time, because part of the physical object of the tested product is directly involved in the simulation loop, it avoids the difficulty of modeling and the simulation error caused by modeling. It has the characteristics of realistic simulation and high precision, and is widely used in the field of guidance and control simulation.

[0003] Since a semi-physical simulation laboratory can only test one product under test at the same time, if multiple products under test need to be tested at the same time in a unified scenario, it is necessary to use multiple laboratories to work simultaneously and carry out distributed collaborative simulation. Since the purpose of the test is to test the performance of multiple products under test under the same environmental conditions, in order to ensure that the test environment constructed by each laboratory is unified for the products under test, it is required that the time and space synchronization between each experiment must be maintained, that is, time and space consistency. The traditional multi-laboratory collaborative simulation time and space synchronization control usually adopts a multi-satellite timing terminal + multi-B code clock card + multi-real-time memory network solution. The disadvantage of this solution is that due to the deviation in the timing of the satellite timing terminal of each laboratory and the response time of the B code clock card, it is easy to cause the simulation computers to fail to achieve strict synchronization, resulting in asynchronous data reading and writing, frame loss, simulation scene space synchronization error, and even read and write conflicts, resulting in data errors. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for controlling spatiotemporal consistency of multi-laboratory collaborative simulation, which adopts a single high-precision satellite timing terminal to avoid the time synchronization deviation between laboratories caused by the timing deviation of the traditional multi-satellite timing terminal solution, and the time synchronization consistency is well controlled and the precision is high; the present scheme adopts a real-time intranet interruption method to synchronize the information interaction between multiple laboratories and within each laboratory, and avoids the traditional multi-B code clock card solution. The deviation of the response time of each clock card causes the deviation of data reading and writing time between the simulation computers of each laboratory, resulting in data missing frames, causing simulation scene space synchronization error, and even read-write conflict, resulting in read-write error; the present scheme requires a small amount of hardware equipment, and the technical implementation complexity and development cost are low.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-laboratory collaborative simulation time-space consistency control method, a number of laboratories are divided into a main laboratory and a slave laboratory according to different functions, wherein there is one main laboratory and the rest are slave laboratories, a set of high-precision satellite timing terminals and a set of time service computers are arranged in the main laboratory, the main laboratory and each slave laboratory are respectively provided with a joint simulation agent computer, and the joint simulation agent computer is arranged with two sets of real-time memory networks, namely, real-time memory network A and real-time memory network B, wherein the real-time memory network A is used for real-time information interaction between each simulation computer in the laboratory to complete the time and data synchronization of each laboratory itself; the real-time memory network B of the main laboratory and each slave laboratory is interconnected through a real-time memory network switch, and is used for the main laboratory to send real-time combat situation data to each slave laboratory to achieve situation unification among multiple laboratories; During the simulation operation, the high-precision satellite timing terminal in the main laboratory uses a high-precision satellite signal receiver to receive the satellite signal of the Beidou system, parse out the standard time information, and restore the second pulse reference signal synchronized with the UTC time; using the second pulse signal as a reference source, the time and frequency measurement and control technology is used to tame the high-stability rubidium atomic clock of the timing terminal, and the high-stability low-phase noise double-slot constant temperature crystal oscillator is locked to the rubidium atomic clock, perfectly combining the long-term stability of the Beidou satellite, the medium-term stability of the atomic frequency standard and the short-term stability of the high-stability crystal oscillator, and finally outputs a high-precision time synchronization signal; after the high-precision satellite timing terminal obtains the standard time, it securely transmits the B-code time signal to the laboratory time service computer through IRIG-B. The B-code clock card is installed in the time service computer, which receives the B-code time synchronization signal sent by the high-precision satellite timing terminal, parses and calibrates its own crystal oscillator unit, and provides absolute time information and standard interrupt signals to the time service computer; The time service computer receives the interrupt signal from the B code clock card, controls the real-time memory network A to generate the real-time network interrupt signal A, and after the joint simulation agent computer of the main laboratory responds to the interrupt signal, it sends the real-time combat situation data through the real-time memory network B and generates the real-time network interrupt signal B; the joint simulation agent computers of each slave laboratory respond to the real-time network interrupt signal B, obtain the real-time combat situation data, synchronously forward it to the real-time memory network A in this laboratory and generate the real-time network interrupt signal C; control each simulation computer to respond to the interrupt signal C to complete the situation solution required by this laboratory and complete the simulation process.

[0006] The beneficial effects of the present invention are as follows: the present invention adopts a single high-precision satellite timing terminal to avoid the time synchronization deviation between laboratories caused by the timing deviation of the traditional multi-satellite timing terminal solution, and the time synchronization consistency is well controlled and the precision is high; the present invention adopts a real-time intranet interruption method to synchronize the information interaction between multiple laboratories and within each laboratory, and avoids the traditional multi-B code clock card solution that causes the deviation of the response time of each clock card to cause the deviation of data reading and writing time between the simulation computers of each laboratory, resulting in data missing frames, causing simulation scene space synchronization error, and even read-write conflict, resulting in read-write error; the present invention requires a small amount of hardware equipment, and the technical implementation complexity and development cost are low; the parts not introduced in detail in the present invention are existing common technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the spatiotemporal consistency control scheme for multi-laboratory collaborative simulation. DETAILED DESCRIPTION

[0008] The present invention is further described in detail below in conjunction with embodiments and specific implementation modes: Example

[0009] like Figure 1 As shown, a multi-laboratory collaborative simulation time-space consistency control method, a number of laboratories according to different functions, divided into a main laboratory and slave laboratories, wherein there is one main laboratory and the rest are slave laboratories, a set of high-precision satellite timing terminal and a set of time service computer are arranged in the main laboratory, the main laboratory and each slave laboratory are respectively provided with a joint simulation agent computer, the joint simulation agent computer is arranged with two sets of real-time memory networks, namely real-time memory network A and real-time memory network B, wherein the real-time memory network A is used for real-time information interaction between each simulation computer in the laboratory, and completes the time and data synchronization of each laboratory itself; the real-time memory network B of the main laboratory and each slave laboratory is interconnected through a real-time memory network switch, and is used for the main laboratory to send real-time combat situation data to each slave laboratory, so as to achieve the situation unification among multiple laboratories; During the simulation operation, the high-precision satellite timing terminal in the main laboratory uses a high-precision satellite signal receiver to receive the satellite signal of the Beidou system, parse out the standard time information, and restore the second pulse reference signal synchronized with the UTC time; using the second pulse signal as a reference source, the time and frequency measurement and control technology is used to tame the high-stability rubidium atomic clock of the timing terminal, and the high-stability low-phase noise double-slot constant temperature crystal oscillator is locked to the rubidium atomic clock, perfectly combining the long-term stability of the Beidou satellite, the medium-term stability of the atomic frequency standard and the short-term stability of the high-stability crystal oscillator, and finally outputs a high-precision time synchronization signal; after the high-precision satellite timing terminal obtains the standard time, it securely transmits the B-code time signal to the laboratory time service computer through IRIG-B. The B-code clock card is installed in the time service computer, which receives the B-code time synchronization signal sent by the high-precision satellite timing terminal, parses and calibrates its own crystal oscillator unit, and provides absolute time information and standard interrupt signals to the time service computer; The time service computer receives the interrupt signal from the B code clock card, controls the real-time memory network A to generate the real-time network interrupt signal A, and after the joint simulation agent computer of the main laboratory responds to the interrupt signal, it sends the real-time combat situation data through the real-time memory network B and generates the real-time network interrupt signal B; the joint simulation agent computers of each slave laboratory respond to the real-time network interrupt signal B, obtain the real-time combat situation data, synchronously forward it to the real-time memory network A in this laboratory and generate the real-time network interrupt signal C; control each simulation computer to respond to the interrupt signal C to complete the situation solution required by this laboratory and complete the simulation process.

[0010] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling spatiotemporal consistency of multi-laboratory collaborative simulation, characterized by: Several laboratories are divided into main laboratories and slave laboratories according to their different functions. There is one main laboratory and the rest are slave laboratories. A set of high-precision satellite timing terminal and a set of time service computers are set up in the main laboratory. A joint simulation agent computer is set up in the main laboratory and each slave laboratory respectively. The joint simulation agent computer is equipped with two sets of real-time memory networks, namely real-time memory network A and real-time memory network B. The real-time memory network A is used for real-time information interaction between simulation computers in the laboratory to complete the time and data synchronization of each laboratory itself; the real-time memory network B of the main laboratory and each slave laboratory is interconnected through a real-time memory network switch, which is used for the main laboratory to send real-time combat data to each slave laboratory to achieve situation unification among multiple laboratories; During the simulation, the high-precision satellite timing terminal in the main laboratory uses a high-precision satellite signal receiver to receive the satellite signal of the Beidou system, parse the standard time information, and restore the second pulse reference signal synchronized with the UTC time. The second pulse signal is used as a reference source, and the time and frequency measurement and control technology is used to tame the high-stability rubidium atomic clock of the timing terminal, and the high-stability and low-phase-noise double-slot constant-temperature crystal oscillator is locked to the rubidium atomic clock, which perfectly combines the long-term stability of the Beidou satellite, the medium-term stability of the atomic frequency standard and the short-term stability of the high-stability crystal oscillator, and finally outputs a high-precision time synchronization signal. After the high-precision satellite timing terminal obtains the standard time, it transmits the B-code time signal to the laboratory time service computer securely through IRIG-B. The time service computer is installed with a B-code clock card, which receives the B-code time synchronization signal sent by the high-precision satellite timing terminal, analyzes and calibrates its own crystal oscillator unit, and then provides the time service computer with absolute time information and standard interrupt signals. The time service computer receives the interrupt signal from the B code clock card, controls the real-time memory network A to generate the real-time network interrupt signal A, and after the joint simulation agent computer of the main laboratory responds to the interrupt signal, it sends the real-time combat situation data through the real-time memory network B and generates the real-time network interrupt signal B; the joint simulation agent computers of each slave laboratory respond to the real-time network interrupt signal B, obtain the real-time combat situation data, synchronously forward it to the real-time memory network A in this laboratory and generate the real-time network interrupt signal C; control each simulation computer to respond to the interrupt signal C to complete the situation solution required by this laboratory and complete the simulation process.

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